Document:

exv10w22

 

Exhibit 10.22

EMPLOYMENT AGREEMENT

      EMPLOYMENT AGREEMENT (“Agreement”) effective as of August 4, 2003 (the
"Effective Date”) by and among Global eXchange Services, Inc., a Delaware
corporation (together with its successors, the “Company”), GXS Holdings, Inc.,
a Delaware corporation (together with its successors, “GXS”), and John Soenksen
(“Executive”), (certain capitalized terms used herein being defined in Article
7 hereof).

WHEREAS the Company is a wholly owned subsidiary of GXS;

      WHEREAS, each of the Company and GXS considers it in its best interests
and the best interests of its stockholders to offer employment to the
Executive;

      WHEREAS, Executive is willing to accept employment on the terms
hereinafter set forth in this Agreement;

      NOW THEREFORE, in consideration of the foregoing and of the mutual
covenants and agreements of the parties set forth in this Agreement, and of
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the parties hereto, intending to be legally bound, agree
as follows:

ARTICLE 1

Position; Term Of Agreement

      Section 1.01 . Position. (a) As of and following the Effective Date,
Executive shall serve as Senior Vice President & Chief Financial Officer of the
Company and shall report to President and Chief Executive Officer (“CEO”).
Executive shall have such duties and authority, consistent with such position,
as shall be determined from time to time by the CEO.

      (b)       During the Employment Term, Executive will devote substantially all of
his business time to the performance of his duties under this Agreement and
will not engage in any other business, profession or occupation for
compensation or otherwise which would conflict with the rendition of such
services either directly or indirectly, without the prior written consent of
the Board.

      Section 1.02 . Term. Executive shall be employed by the Company for a
period of 24 months (the “Employment Term”), commencing on the Effective Date
and, subject to earlier termination or extension as provided herein, ending on
the second anniversary thereof; provided that on each anniversary of the
Effective Date beginning on such second anniversary, the Employment Term shall
be automatically extended for successive one-year periods unless not later than
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month prior to any such automatic extension the Company or Executive shall
give notice that the Employment Term shall not be extended.

ARTICLE 2

Compensation And Benefits

      Section 2.01 . Base Salary. Commencing on the Effective Date, the
Company shall pay Executive an annual base salary (the “Base Salary”) at the
annual rate of $250,000 payable in equal monthly installments or otherwise in
accordance with the payroll and personnel practices of the Company from time to
time. Executive’s Base Salary shall not be reduced during the Employment Term.

      Section 2.02 . Bonus. On August 4, 2003, the Company shall pay Executive
a lump sum payment of $115,000. Beginning with calendar year 2004, subject to
Executive’s continued employment on December 31 of each calendar year during
remainder of the Employment Term, Executive shall be eligible to receive an
annual bonus (“Annual Bonus”) of $150,000 (the “Target Bonus”) if executive
achieves 100% of the targets set forth in the plan for such year assigned by
the CEO, with a minimum guaranteed bonus of 50% of the Target Bonus. The
Annual Bonus for each calendar year shall be paid in a lump sum on or before
March 31 of the following calendar year.

      Section 2.03 . Employee Benefits. (a) During the Employment Term,
Executive shall be eligible for employee benefits (including fringe benefits,
vacation and health, accident and disability insurance, and retirement plan
participation) substantially similar to those benefits made available generally
to senior executives of the Company.

      Section 2.04 . Business And Travel Expenses. Reasonable travel,
entertainment and other business expenses incurred by Executive in the
performance of Executive’s duties hereunder shall be reimbursed by the Company
in accordance with Company policies as in effect from time to time.

      Section 2.05 . Options. (a) On the Effective Date, the Company shall
grant to Executive an option (the “Option”) to purchase 700,000 shares of
common stock of GXS (“Common Stock”) (representing 0.62% of GXS’s Common Stock
as of the Effective Date on a fully diluted basis), at an exercise price per
share equal to the fair market value (determined in accordance with the terms
of the Plan) of a share of Common Stock on the date of grant. The Option will
be treated as an “incentive stock option” within the meaning of Section 422 of
the Code to the maximum extent permitted by law and shall be issued pursuant to
Rule 701 of the Securities Act or registered on a Form S-8 registration
statement under the Securities Act that becomes effective within ninety (90)
days after the Effective Date.

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      (b)       The Option shall consist of five tranches. The first tranche shall
consist of 420,000 shares of Common Stock (representing 60% of the total shares
of Common Stock subject to the Option) and the remaining four tranches shall
each consist of 70,000 shares of Common Stock (each such tranche representing
10% of the total shares of Common Stock subject to the Option). Provided
Executive remains in the employ of the Company, GXS or one of their
Subsidiaries as of the applicable vesting date, each such tranche shall become
vested and exercisable as to 25% of the shares constituting such tranche on the
first anniversary of the Vesting Commencement Date with respect to such
tranche, and the balance of the shares constituting such tranche shall become
vested and exercisable at a rate of 1/36 of such balance per month over the
3-year period following such anniversary.

      (c)       The vesting commencement date (the “Vesting Commencement Date”) with
respect to the first tranche (as described in paragraph (b) above) of the
Option shall be the Effective Date, and the Vesting Commencement Date for the
second, third, fourth and fifth tranches shall be, respectively, the first,
second, third and fourth anniversaries of the Effective Date.

      (d)       Any unvested portion of the Option shall become fully vested and
exercisable upon (i) termination of Executive’s employment by the Company
without Cause (other than by reason of Executive’s death or disability) within
12 months after a Change in Control or (ii) termination of Executive’s
employment by reason of Executive’s death. Except as set forth herein, the
Options shall otherwise be subject to the terms of the GXS Stock Incentive Plan
(the “Plan”) and the applicable award agreement, copies of which are attached
hereto as Attachment 1 and Attachment 2, respectively.

      (e)       Upon termination of Executive’s employment, GXS shall have the right
to repurchase the shares of Common Stock acquired upon exercise of the Option
in accordance with the terms of the Plan and the applicable award agreement.

ARTICLE 3

Certain Termination Benefits

      Section 3.01. Certain Events. (a) A “Qualifying Event” means the
termination of Executive’s employment by the Company without Cause (other than
by reason of Executive’s death or disability).

      (b)       Each party hereto shall give to the other party 30 days prior written
notice of such party’s intent to terminate Executive’s employment with the
Company for any reason.

      Section 3.02. Right To Certain Benefits. In the event of any
termination of employment during the Employment Term, Executive shall be
entitled to

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receive from the Company either the relevant Severance Benefits to the
extent and as described in Section 3.03 or the relevant Separation Benefits to
the extent and as described in Section 3.04, as the case may be, contingent
upon Executive signing a release in a form reasonably acceptable to the
Company.

      Section 3.03. Benefits Upon A Qualifying Event. In the event of any
termination of employment during the Employment Term, Executive shall be
entitled to the following benefits (the “Severance Benefits”) upon a Qualifying
Event:

      (a)       The Company shall pay Executive as soon as practicable a lump sum, in
cash, equal to Executive’s earned but unpaid Base Salary and other vested but
unpaid cash entitlements for the period through and including the date of
termination of Executive’s employment, including unused earned vacation pay and
unreimbursed documented business expenses (collectively, “Accrued
Compensation”). In addition, Executive shall be entitled to any other vested
benefits earned by Executive for the period through and including the date of
termination of Executive’s employment under any other employee benefit plans
and arrangements maintained by the Company, in accordance with the terms of
such plans and arrangements, except as modified herein (collectively, “Accrued
Benefits”).

      (b)       The Company shall pay Executive (i) a pro rata portion (based on the
number of whole and partial calendar months prior to and including the month in
which the Qualifying Event occurs) of the most recent Annual Bonus or
First-Year Bonus, as applicable, paid to Executive and (ii) a lump sum
severance payment in an amount equal to one times the sum of (A) the annual
Base Salary in effect immediately prior to such Qualifying Event and (B) the
most recent Annual Bonus or First-Year Bonus, as applicable, paid to Executive.

      (c)       The portion of the Option which would have become vested and
exercisable within the 12-month period following the date of termination shall
become fully vested and exercisable on the date of such termination. The
vested portion of the Option shall remain exercisable by Executive for three
months following the date of such termination.

      (d)       Except as set forth in this Section 3.03, Executive will be entitled
to no other payments or benefits from the Company.

      Section 3.04. Separation Benefits. In the event of any termination of
employment during the Employment Term other than upon a Qualifying Event,
Executive (or his estate, as the case may be) shall be entitled to the benefits
set forth below (the “Separation Benefits”):

      (i)       The Accrued Compensation;

      (ii)       The Accrued Benefits; and

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      (iii)       Executive shall be entitled to exercise the portion of the Options
vested on the date of such termination for the period provided in the Plan and
the applicable award agreement.

      Section 3.05. Non-renewal Of Agreement. In the event that at the end of
the Employment Term the Company does not renew this Agreement in accordance
with 1.02 hereof and terminates Executive’s employment without Cause at such
time, the Executive shall be entitled to the following benefits:

      (i)       The Accrued Compensation;

      (ii)       The Accrued Benefits; and

      (iii)       The Company shall pay Executive a lump sum severance payment (A) if
the Company does not renew this Agreement upon the expiration of the initial 24
months of the Employment Term, in an amount equal to the sum of the annual Base
Salary in effect immediately prior to such Qualifying Event and the most recent
Annual Bonus paid to Executive, or (B) if the Company does not renew this
Agreement upon the expiration of any successive one-year period of the
Employment Term, in an amount equal to one-half of the sum of the annual Base
Salary in effect immediately prior to such Qualifying Event and the most recent
Annual Bonus paid to Executive

ARTICLE 4

Covenants and Representations

      Section 4.01. Noncompetition, Nonsolicitation, Noncompete,
Nondisparagement And Nondisclosure. (a) While employed by the Company and for
12 months after the termination of Executive’s employment (except where the
Company does not renew this Agreement at the end of the Employment Term in
which case the period shall continue for 6 months after the termination of
Executive’s employment), Executive shall not, on his account, or as an
employee, consultant, independent contractor, partner, owner, officer, director
or stockholder, engage in, be connected with, have any interest in, or aid or
assist anyone else to engage in, be connected with, or have any interest in,
any firm or person which directly competes with a line or lines of business
which the Company or GXS (or any of their Subsidiaries) was engaged in or
sought to be engaged in during the Employment Term; provided that Executive may
(i) purchase securities in any corporation whose securities are listed or
traded on a national securities exchange or in an over-the-counter securities
market if such purchases do not result in Executive beneficially owning,
directly or indirectly, at any time 5% or more of the equity securities of any
such corporation and (ii) be an employee, independent contractor or officer of
any such firm or person provided Executive has no direct or indirect duties or
responsibilities with respect to any activities of such firm or person which
are competitive with any line or lines of business of the Company or GXS (or
any of their Subsidiaries).

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      (b)       While employed by the Company and for 12 months after the termination
of Executive’s employment, Executive shall not, directly or indirectly:

                (i)       induce or attempt to induce any employee of GXS or the Company
(or any Subsidiary of GXS or the Company) to be employed or perform
services elsewhere;

                (ii)       solicit or attempt to solicit the trade of any individual or
entity which, at the time of such solicitation, is a customer of GXS or
the Company (or any Subsidiary of GXS or the Company) or which GXS or
the Company (or any Subsidiary of GXS or the Company) is undertaking
reasonable steps to procure as a customer at the time of or immediately
preceding termination of employment; provided, however, that this
limitation shall only apply to any product or service which is in
competition with a product or service of GXS or the Company (or any
Subsidiary of GXS or the Company).

      (c)       In connection with the termination of Executive’s employment
hereunder, Executive shall cooperate with the Company and any Subsidiary or
Affiliate of the Company to ensure an orderly transition, in such a manner and
at such times as the Company shall reasonably request.

      (d)       Except as required by law, neither party will at any time (whether
during or after termination of Executive’s employment with the Company)
knowingly make any statement, written or oral, or take any other action that
would disparage or otherwise harm the other party, its business or reputation
or, in the case of the Company, the reputation of any of its Affiliates or the
officers and directors of any of them.

      (e)       Executive shall enter into and agrees to be bound by the Proprietary
Information and Inventions Agreement of the Company, a copy of which is
attached as Annex A to the Plan.

      Section 4.02. Material Inducement; Specific Performance. (a) If any
provision of Section 4.01 is determined by a court of competent jurisdiction
not to be enforceable in the manner set forth in this Agreement, the Company
and Executive agree that it is the intention of the parties that such provision
should be enforceable to the maximum extent possible under applicable law and
that such court shall reform such provision to make it enforceable in
accordance with the intent of the parties.

      (b)       Executive acknowledges that a material part of the inducement for the
Company to provide the compensation provided herein is Executive’s covenants
set forth in Section 4.01 and that the covenants and obligations of Executive
with respect to noncompetition, nondisclosure and nonsolicitation relate to
special, unique and extraordinary matters and that a violation of any of

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the terms of such covenants and obligations will cause the Company
irreparable injury for which adequate remedies are not available at law.
Therefore, Executive agrees that, if Executive shall materially breach any of
those covenants during or following termination of employment, the Company
shall be entitled to an injunction, restraining order or such other equitable
relief (without the requirement to post a bond) restraining Executive from
committing any violation of the covenants and obligations contained in Section
4.01 and the Company shall have no further obligation to pay Executive any
benefits otherwise payable hereunder. The remedies in the preceding sentence
are cumulative and are in addition to any other rights and remedies the Company
may have at law or in equity as an arbitrator (or court) shall reasonably
determine.

      Section 4.03. Employee Representation. Executive expressly represents
and warrants to the Company that Executive is not a party to any contract or
agreement and is not otherwise obligated in any way, and is not subject to any
rules or regulations, whether governmentally imposed or otherwise, which will
or may restrict in any way Executive’s ability to fully perform Executive’s
duties and responsibilities under this Agreement.

ARTICLE 5

Successors And Assignments

      Section 5.01. Assignments. Except for an assignment in the event of a
Change in Control or an assignment to an affiliate of the Company, this
Agreement shall not be assignable by the Company without the written consent of
Executive. This Agreement shall not be assignable by Executive.

      Section 5.02. Successors; Binding Agreement. This Agreement shall inure
to the benefit of and be binding upon personal or legal representatives,
executors, administrators, successors, heirs, distributees, devisees, and
legatees.

ARTICLE 6

Miscellaneous

      Section 6.01. Notices. Any notice required to be delivered hereunder
shall be in writing and shall be addressed:

(i)   if to the Company, to:

100 Edison Park Drive

Gaithersburg, MD 20878

Fax: 301-340-5840

Attn: General Counsel

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      (ii)       if to Executive, to Executive’s last known address as reflected on
the books and records of the Company;

or, in each case, to such other address as such party may hereafter specify for
the purpose by written notice to the other party hereto. Any such notice shall
be deemed received on the date of receipt by the recipient thereof if received
prior to 5:00 p.m. in the place of receipt and such day is a business day in
the place of receipt. Otherwise, any such notice shall be deemed not to have
been received until the next succeeding business day in the place of receipt.

      Section 6.02. Effectiveness of Agreement. The effectiveness of this
Agreement is subject to approval by a majority of the Board of Directors of GXS
and approval by a vote of the persons who own more than 75% of the outstanding
voting stock of GXS immediately after the Effective Date.

      Section 6.03. Dispute Resolution. (a) Except as provided in Section
4.02, each of Executive and the Company shall have the right and option to
elect (in lieu of litigation) to have any dispute or controversy arising under
or in connection with this Agreement settled by arbitration, conducted before a
panel of three arbitrators sitting in a location in Maryland, in accordance
with the rules of the American Arbitration Association then in effect.
Executive’s election to arbitrate, as herein provided, and the decision of the
arbitrators in that proceeding, shall be binding on the Company and Executive.
Judgment may be entered on the award of the arbitrator in any court having
jurisdiction.

      (b)       Each party shall pay its own expenses of such arbitration or
litigation and all common expenses of such arbitration or litigation shall be
borne equally by Executive and the Company. Each party to an arbitration or
litigation hereunder shall be responsible for the payment of its own attorneys’
fees.

      Section 6.04. Unfunded Agreement. The obligations of the Company under
this Agreement represent an unsecured, unfunded promise to pay benefits to
Executive and/or Executive’s beneficiaries, and shall not entitle Executive or
such beneficiaries to a preferential claim to any asset of the Company.

      Section 6.05. Non-exclusivity Of Benefits. Unless specifically provided
herein, neither the provisions of this Agreement nor the benefits provided
hereunder shall reduce any amounts otherwise payable, or in any way diminish
Executive’s rights as an employee of the Company, whether existing now or
hereafter, under any compensation and/or benefit plans (qualified or
nonqualified), programs, policies, or practices provided by the Company, for
which Executive may qualify; provided, however, that the Severance Benefits
shall be in lieu of any severance benefits under any such plans, programs,
policies or practices. Vested benefits or other amounts which Executive is
otherwise entitled to receive under any plan, policy, practice, or program of
the Company (i.e., including, but not limited to, vested benefits under any
qualified or nonqualified retirement plan), at or subsequent to the date of
termination of

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Executive’s employment shall be payable in accordance with such plan,
policy, practice, or program except as expressly modified by this Agreement.

      Section 6.06. Employment Status. Nothing herein contained shall
interfere with the Company’s right to terminate Executive’s employment with the
Company at any time, with or without Cause, subject to the Company’s obligation
to provide Severance Benefits or Separation Benefits, if any. Executive shall
also have the right to terminate Executive’s employment with the Company at any
time without liability, subject only to the provisions hereof and Executive’s
obligations hereunder.

      Section 6.07. 
Entire Agreement. This Agreement and the Acknowledgement
of Conditions of Employment represent the entire agreement between Executive
and the Company and its affiliates with respect to Executive’s employment
and/or severance rights, and supersedes all prior discussions, negotiations,
and agreements concerning such rights; provided, however, that any amounts
payable to Executive hereunder shall be reduced by any amounts paid to
Executive as required by any applicable law in connection with any termination
of Executive’s employment.

      Section 6.08. Tax Withholding. Notwithstanding anything in this
Agreement to the contrary, the Company shall withhold from any amounts payable
under this Agreement all federal, state, city, or other taxes as are legally
required to be withheld.

      Section 6.09.
 Waiver Of Rights. The waiver by either party of a breach
of any provision of this Agreement shall not operate or be construed as a
continuing waiver or as a consent to or waiver of any subsequent breach hereof.

      Section 6.10. Severability. In the event any provision of this
Agreement shall be held illegal or invalid for any reason, the illegality or
invalidity shall not affect the remaining parts of this Agreement, and this
Agreement shall be construed and enforced as if the illegal or invalid
provision had not been included.

      Section 6.11. Governing Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of Maryland without
reference to principles of conflict of laws.

      Section 6.12. Counterparts. This Agreement may be signed in several
counterparts, each of which shall be an original, with the same effect as if
the signatures thereto and hereto were on the same instrument.

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ARTICLE 7

Definitions

      For purposes of this Agreement, the following terms shall have the
meanings set forth below.

      “Accrued Benefits” has the meaning accorded such term in Section 3.03.

      “Accrued Compensation” has the meaning accorded such term in Section 3.03.

      “Affiliate” has the meaning accorded to such term in Rule 12b-2 under the
Exchange Act.

      “Agreement” has the meaning accorded such term in the introductory
paragraph of this Agreement.

      “Base Salary” has the meaning accorded such term in Section 2.01.

      “Beneficial Ownership” A Person shall be deemed the “Beneficial Owner”
of, and shall be deemed to “beneficially own,” securities pursuant to Rule
13d-3 under the Exchange Act.

      “Board” means, the Board of Directors of the Company.

      “Cause” means the occurrence of any one or more of the following:

               (i)       Executive’s willful and continued failure substantially to
perform the duties of Executive’s position as then in effect (other than
as a result of incapacity due to physical or mental illness) which
failure is not remedied within fifteen business days of written notice
from the Company;

               (ii)       Executive’s gross negligence or willful malfeasance in the
performance of Executive’s duties hereunder as then in effect;

               (iii)       Executive’s breach of any of the covenants contained in
Section 4.01; or

               (iv)       Executive’s commission of an act constituting fraud,
embezzlement, or any other act constituting a felony;

provided, however, that for purposes of this definition, no act or
failure to act shall be deemed “willful” unless effected by Executive
not in good faith and without reasonable belief that such action or
failure to act was in the best interests of the Company.

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      “Change in Control” means the occurrence of any of the following:

               (i)       the consummation of a merger or consolidation of the Company or
GXS with or into any other entity pursuant to which the stockholders of
the Company or GXS, as applicable, immediately prior to such merger or
consolidation hold less than 50% of the voting power of the surviving
entity;

               (ii)       the sale or other disposition of all or substantially all of
the Company’s or GXS’s assets or any approval by the stockholders of the
Company or GXS of a plan of complete liquidation of the Company or GXS,
as applicable;

               (iii)       any acquisition by any person or persons (other than the
direct and indirect stockholders of the Company or GXS immediately after
the Effective Date) of the Beneficial Ownership of 50% or more of the
voting power of the Company’s or GXS’s equity securities in a single
transaction or series of related transactions; provided, however, that
an underwritten public offering of the Company’s or GXS’s securities
shall not be considered a Change in Control; or

               (iv)       any change in the composition of the Board over a two-year
period such that the directors at the beginning of the period and new
directors elected during that period and approved by two-thirds of the
incumbent directors cease to constitute at least a majority of the
Board;

provided, however, that a transaction shall not constitute a Change in
Control if its sole purpose is to change the state of the Company’s
incorporation or to create a holding company that will be owned in
substantially the same proportions by the persons who held the Company’s
securities immediately before such transaction.

      “Code” means the Internal Revenue Code of 1986, as amended.

      “Employment Term” has the meaning accorded such term in Section 1.02.

      “Exchange Act” means the Securities Exchange Act of 1934, as amended.

      “Option” has the meaning accorded such term in Section 2.05.

      “Person” means an individual, corporation, partnership, association, trust
or any other entity or organization.

      “Qualifying Event” has the meaning accorded such term in Section 3.01.

      “Securities Act” means the Securities Act of 1933, as amended.

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      “Separation Benefits” has the meaning accorded such term in Section 3.04.

      “Severance Benefits” has the meaning accorded such term in Section 3.03.

      “Subsidiary” of any Person means any other Person of which securities or
other ownership interests having voting power to elect a majority of the board
of directors or other Persons performing similar functions are at the time
directly or indirectly owned by such Person.

      “Vesting Commencement Date” shall have the meaning accorded such term in
Section 2.05(c).

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      IN WITNESS WHEREOF, the Company, GXS and Executive have executed this
Agreement, to be effective as of the day and year first written above.

	 	 	 	 	 
	 	 	GXS HOLDINGS, INC
	 	 	
 	 	 
	 	 	
By:	 	/s/   HARVEY F. SEEGERS
	 	 	 	 	

	 	 	 	 	Name: Harvey F. Seegers
	 	 	 	 	Title: President and Chief Executive Officer
	 	 	
 	 	 
	 	 	GLOBAL EXCHANGE SERVICES, INC
	 	 	
 	 	 
	 	 	
By:	 	/s/   HARVEY F. SEEGERS
	 	 	 	 	

	 	 	 	 	Name: Harvey F. Seegers
	 	 	 	 	Title: President and Chief Executive Officer
	 	 	
 	 	 
	 	 	EXECUTIVE:
	 	 	
 	 	/s/   JOHN SOENKSEN
	 	 	

John Soenksen

13<PAGE>

                                                                     EXHIBIT 4.1

                                                                  EXECUTION COPY

                            ASSET PURCHASE AGREEMENT

                  This ASSET PURCHASE AGREEMENT (this "Agreement") is made and
entered into as of September 2, 2003 by and among Zix Corporation, a Texas
corporation ("Purchaser"), Zix Acquisition Corporation, a Delaware corporation
and wholly owned subsidiary of Purchaser ("Purchaser Sub"), Elron Electronic
Industries Ltd., an Israeli corporation ("Parent"), Elron Software, Inc., a
Delaware corporation and a majority owned subsidiary of Parent ("Elron"), and
Elron Software (2000) Ltd., an Israeli corporation and wholly owned subsidiary
of Elron (together with Elron, "Seller").

                                    RECITALS:

                  WHEREAS, Seller presently conducts the business of designing,
creating, developing, licensing, distributing, testing and marketing, and
selling certain Software and services, including a comprehensive suite of spam,
email and Web filtering solutions (the "Software Business"); and

                  WHEREAS, Seller desires to sell and Purchaser desires to
purchase and acquire the Software Business (including the right to design,
create, develop, license, distribute, test, market and sell the Software
Products) and certain assets, rights and properties of Seller necessary to
operate, or primarily used or held for use in, the Software Business, all on the
terms and subject to the conditions set forth in this Agreement.

                  NOW, THEREFORE, for good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, and in consideration
of the mutual covenants, representations, warranties and agreements herein
contained, the parties hereto agree as follows:

                                   ARTICLE 1

                                  DEFINITIONS

         1.1      DEFINITIONS. As used in this Agreement, unless the context
otherwise requires, capitalized terms used but not otherwise defined in this
Agreement shall have the meanings set forth below:

                  "Affiliate" shall mean with respect to any Person, any other
Person who, directly or indirectly, controls, is controlled by or is under
common control with that Person.

                  "Claim" shall mean any claim, charge, demand, action, suit,
arbitration, investigation, audit or proceeding.

                  "Code" shall mean the Internal Revenue Code of 1986, as
amended.

                  "Collateral Agreements" shall mean the Bill of Sale, the
Convertible Note, the Registration Rights Agreement, the Trademark License
Agreement and any other document executed and delivered in connection with the
transactions contemplated by this Agreement.

<PAGE>

                  "Confidential Information" shall mean any confidential
information, methods of operation, customers and customer lists, products,
proposed products, former products, prices, fees, costs, plans, designs,
technology, inventions, trade secrets, know-how, Software, marketing methods,
policies, plans or other specialized information or proprietary matters.

                  "Consent" shall mean any consent, approval or authorization
of, notice to, or designation, registration, declaration or filing with, any
Person.

                  "Contract" shall mean any agreement, contract, lease,
commitment, license, undertaking or other legally binding contractual right or
obligation to which a Person is a party or by which a Person or its assets or
properties are bound.

                  "Documentation" shall mean the instructions and written
documents, including user documentation, installation, operation and maintenance
instructions used in connection with the Software Products.

                  "Employee Documents" shall mean (i) the employee related forms
(including employment offer letters and assignment of invention,
non-competition, confidentiality and alternate dispute resolution agreements)
submitted to each Transferred Employee prior to the Closing for delivery to
Purchaser or an Affiliate of Purchaser at the Closing and (ii) Employment
Agreements between Purchaser or an Affiliate of Purchaser and each of the
Transferred Employees.

                  "Employees" shall mean all current and former employees of
Seller.

                  "Employment Costs and Liabilities" shall mean, in relation to
the Employees, all: (i) amounts payable or paid in respect of the employment of
him or her, including salary, wages, Tax and social security contributions,
employer's pension contributions, bonus, insurance premium, payments or
allowances or any other consideration for employment; (ii) costs of providing
any non-cash benefits, which the employer is required to provide, by Law or
contract in connection with such employment; and (iii) Losses arising out of or
connected with his or her employment or the employment relationship, or
termination of his or her employment, or of the employment relationship.

                  "ERISA" shall mean the Employee Retirement Income and Security
Act of 1974, as amended.

                  "Governmental Authority" shall mean any federal, state, local
or foreign government or any subdivision, agency, instrumentality, authority,
department, commission, board or bureau thereof or any federal, state, local or
foreign court, tribunal or arbitrator.

                  "Indebtedness" means, with respect to any Person, (i) all
indebtedness of such Person, whether or not contingent, for borrowed money, (ii)
all obligations of such Person evidenced by notes, bonds or debentures, (iii)
all indebtedness created or arising under any conditional sale or other title
retention agreement with respect to property acquired by such Person, (iv) all
obligations, contingent or otherwise, of such Person under acceptance, letter of
credit or similar facilities, (v) all accounts payable not assumed pursuant to
Section 3.1(a), (vi) any Liabilities arising from or related to securitized or
factored accounts receivable arrangements

                                        2
<PAGE>

and (vii) all Indebtedness of others referred to in clauses (i) through (vi)
above guaranteed directly or indirectly in any manner by such Person.

                  "Intellectual Property" shall mean, whether solely or jointly
owned, domestic and foreign patents (including design registrations and other
government grants of rights to inventions), patent applications, patent licenses
from third parties, software licenses from third parties, know-how licenses from
third parties, trade names, trademarks, trademark registrations and
applications, service marks, service mark registrations and applications (and
the goodwill associated therewith) and copyright registrations and applications,
together with all unregistered copyrights, trade secrets, know-how and other
Confidential Information, other non-public proprietary technical and business
information, proprietary processes and formulae, and all ownership, use and
other rights thereto (including rights of renewal and rights to sue for past,
present and future infringements or misappropriations thereof).

                  "know-how" shall mean Software concepts and invention
disclosures related to the Software Products of Seller but that are not
incorporated into the Software Products or filed as patent applications, if any,
and trade secrets that are related to the Software Products.

                  "Knowledge" or "to the Knowledge of" shall mean, with respect
to Seller, information that is actually known, after commercially reasonable
inquiry of the individuals with primary responsibility for such matters.

                  "Laws" shall mean all federal, state, local or foreign laws,
ordinances, rules and regulations.

                  "Liabilities" shall mean any and all liabilities and
obligations, whether accrued or fixed, absolute or contingent, matured or
unmatured or determined or determinable, including those arising under any Law,
Claim or Order and those arising under any Contract.

                  "Liens" shall mean all title defects, title encumbrances,
title objections, mortgages, liens, claims, charges, pledges, of any nature
whatsoever, including leases, chattel or other mortgages, collateral security
arrangements, title imperfections, defect or objection liens, security
interests, conditional and installment sales agreements and other title or
interest retention arrangements.

                  "Losses" shall mean all losses, damages, claims, costs and
expenses (including reasonable attorneys' fees and court costs).

                  "Material Adverse Effect" shall mean any event, circumstance,
change or effect that has a material adverse effect on the Transferred Assets or
business, results of operation, condition (financial or otherwise) or the
operation of the Software Business, taken as a whole.

                  "Order" shall mean any judgment, award, order, writ,
injunction or decree issued by any Governmental Authority.

                  "ordinary course of business" or "ordinary course" shall mean
the ordinary course of business consistent with past custom and practice of the
Software Business.

                                        3
<PAGE>

                  "Permits" shall mean all permits, certifications, licenses,
approvals, franchises, notices and authorizations issued by any Governmental
Authority.

                  "Permitted Liens" shall mean (i) Liens for Taxes, assessments
and other governmental charges that are not due and payable or that may
thereafter be paid without penalty or that are being contested in good faith by
appropriate proceedings or (ii) Liens imposed by Law, such as materialmen's,
mechanics', landlords', workers', repairmen's, employees', carriers', vendors',
warehousemen's and other like Liens arising in the ordinary course of business
in respect of obligations that are not yet due and payable.

                  "Person" shall mean any individual, partnership, joint
venture, limited liability company, corporation, trust, unincorporated
organization, Governmental Authority or other entity.

                  "Seller Plans" shall mean all "employee benefit plans", as
defined in Section 3(3) of ERISA, and all other employee benefit arrangements or
payroll practices, including, without limitation, bonus plans, employment,
severance, change in control, consulting or other compensation agreements,
incentive, equity or equity-based compensation, or deferred compensation
arrangements, stock purchase, severance pay, sick leave, vacation pay, and
scholarship plans and programs maintained by Seller or any of its Affiliates for
all Employees.

                  "Software" shall mean the expression of an organized set of
instructions in a natural or coded language that is contained on a physical
media of any nature (whether electronic, written, magnetic or optical) and that
may be used with a computer or other data processing device of any nature which
is based on digital technology, to make such computer or other device operate in
a particular manner and for a certain purpose, and shall include computer
programs in source and object code, test or other significant data libraries,
and any of the following that is contained on a physical media of any nature and
that is used in the design, development, modification, enhancement, testing,
installation, maintenance, diagnosis or assurance of the same: flow diagrams;
masks; templates; input and output formats; file layouts; development tools;
database formats; interfaces; test programs; and other similar materials.

                  "Software Products" shall mean Seller's Message Inspector, Web
Inspector, IM AntiVirus, Firewall NT and OEM products and all of Seller's other
Internet monitoring, Web and email filtering, spam and virus protection Software
products and services, including those under development relating to the
Software Business.

                  "Tax" or "Taxes" shall mean any and all taxes, charges, fees,
levies, impost, duties and governmental fees or other like assessments or
charges of any kind, including all income, gross receipts, gains, sales, use,
employment, franchise, profits, excise, property, value added and other taxes,
fees, stamp taxes and duties, assessments or charges of any kind, together with
any interest and penalties, additions to tax or additional amounts imposed by
any Taxing Authority with respect thereto.

                  "Taxing Authority" shall mean the U.S. Internal Revenue
Service and any other U.S. or non-U.S. federal, state, provincial, local,
national or other Governmental Authority having the power to impose a Tax or
Taxes.

                                        4
<PAGE>

         1.2      INTERPRETATION. The following provisions shall apply in
connection with the interpretation of this Agreement:

                  (a)      any reference to the singular includes the plural and
         vice versa, any reference to natural persons includes legal persons and
         vice versa, and any reference to a gender includes the other gender;

                  (b)      any reference to the Articles, Sections, Exhibits and
         Schedules are, unless otherwise stated, references to the Articles,
         Sections, Exhibits and Schedules of or to this Agreement;

                  (c)      the words "hereof", "herein" and "hereunder" and
         words of similar import, when used in this Agreement, shall refer to
         this Agreement as a whole and not to any particular provision of this
         Agreement;

                  (d)      all Exhibits and the Schedules form an integral part
         of this Agreement and are equally binding therewith and any reference
         to "this Agreement" shall include such Exhibits and the Schedules;

                  (e)      any reference to a statutory provision shall include
         a reference to the provision as modified, amended or supplemented from
         time to time and any subordinate legislation made under such statutory
         provision;

                  (f)      references to a Person shall include any permitted
         assignee or successor to such party in accordance with this Agreement;

                  (g)      the terms "dollars" or "$" shall mean United States
         dollars and all payments hereunder shall be made in United States
         dollars;

                  (h)      the use of "or" is not intended to be exclusive
         unless explicitly indicated otherwise;

                  (i)      whenever the words "include," "includes" or
         "including" are used in this Agreement, they are deemed to be followed
         by the words "without limitation"; and

                  (j)      the descriptive headings contained in this Agreement
         are for convenience of reference only and shall not affect in any way
         the meaning or interpretation of this Agreement.

                                    ARTICLE 2

                               PURCHASE OF ASSETS

         2.1      PURCHASE AND SALE OF TRANSFERRED ASSETS. On the terms and
subject to the conditions hereof, at the Closing, Seller shall sell, transfer,
convey, assign and deliver to Purchaser or Purchaser Sub, and Purchaser or
Purchaser Sub shall purchase and accept, free and clear of all Liens, except
Permitted Liens, all of Seller's right, title and interest in and to the assets,
properties, rights, licenses, Contracts and business, of every kind and
description, wherever located, real, personal or mixed, tangible or intangible,
necessary to operate, or

                                        5
<PAGE>

primarily used or held for use in, the Software Business by Seller as the same
shall exist on the Closing Date (collectively, the "Transferred Assets"), and
including, except for the Excluded Assets, all right, title and interest of
Seller in, to and under:

                  (a)      all machinery, equipment, tools, work stations,
furniture and all other tangible personal property and fixed assets of Seller
that are necessary to operate, or primarily used or held for use in, the
Software Business, including such tangible personal property and fixed assets
listed on Schedule 2.1(a);

                  (b)      all real property owned or leased by Seller that is
necessary to operate, or primarily used or held for use in, the Software
Business, including such real property listed on Schedule 2.1(b), in each case
together with all plants, buildings, structures, fixtures, easements, rights of
way and improvements erected on such property;

                  (c)      all supply agreements, customer agreements, license
agreements, consulting agreements, lease agreements and other Contracts relating
to the conduct of the Software Business, including those listed on Schedule
2.1(c) (collectively, the "Assigned Contracts");

                  (d)      all Software and Documentation that is necessary to
operate, or primarily used or held for use in, the Software Business, including
the Software Products listed on Schedule 2.1(d);

                  (e)      all technical information (whether written or in
electronic format) necessary to operate, or primarily used or held for use in,
the Software Business or relating to the design, creation and development of the
Software Products, including the Documentation identified on Schedule 2.1(e);

                  (f)      all Intellectual Property necessary for the conduct
of, or primarily used or held for use in, or which arose out of, the Software
Business or relating to the Software Products or to the design, creation or
development thereof;

                  (g)      all the trademarks, trade names and service marks
identified on Schedule 2.1(g) (the "Trademarks");

                  (h)      subject to Section 4.3, all cash and cash equivalents
(on hand and in banks), held by Seller as of the Closing Date identified on
Schedule 2.1(h);

                  (i)      all raw materials, work-in-process, finished goods,
supplies and other inventories of the Software Business identified on Schedule
2.1(i);

                  (j)      all accounts, notes and other receivables and the
rights to receive payments from any Person to the extent relating to the
Software Business;

                  (k)      the benefit of all pre-paids, deferred costs,
deposits, advances, credits and expenses that have been prepaid by Seller to the
extent relating to the Software Business, including ad valorem taxes, lease and
rental payments;

                                        6
<PAGE>

                  (l)      all books and records necessary to operate, or
relating primarily to, the Software Business, including lab books,
Documentation, software road maps, presentations, customer lists, supplier lists
and financial accounting records; and

                  (m)      all goodwill associated with the Transferred Assets
or the Software Business.

         2.2      EXCLUDED ASSETS. Notwithstanding anything to the contrary
contained in this Agreement, there shall be excluded from the Transferred Assets
and Seller shall retain all right, title and interest in and to the following
rights, properties and assets (collectively, the "Excluded Assets"):

                  (a)      all of Seller's Contracts other than the Assigned
Contracts;

                  (b)      all of Seller's trademarks, trade names and service
marks (including the name, logo and trademark "Elron Software") other than the
Trademarks;

                  (c)      all of Seller's assets set forth on Schedule 2.2(c);

                  (d)      all corporate records (including minute books and
stock ledgers), tax returns and financial records (other than customer contract
files and accounting records, which are included in the Assigned Contracts);

                  (e)      all insurance policies and all rights of Seller to
insurance claims, related refunds and proceeds arising from or related to the
Excluded Assets and Retained Liabilities (as defined in Section 3.2);

                  (f)      any refunds, credits, prepayments or over payments
with respect to Taxes paid or accrued by Seller;

                  (g)      all capital stock or other securities held by Seller
in any Person (including the capital shares of Elron Software (2000) Ltd.);

                  (h)      all employment, severance or similar agreements with
any Employee; and

                  (i)      all of Seller's assets that are neither necessary for
the operation of, nor primarily used or held for use in, the Software Business.

         2.3      FURTHER CONVEYANCES AND ASSUMPTIONS; CONSENT OF THIRD PARTIES.

                  (a)      From time to time following the Closing, Seller and
Purchaser shall, and shall cause their respective Affiliates to, execute,
acknowledge and deliver all such further conveyances, notices, assumptions,
releases and such other instruments, and shall take such further actions, as may
be reasonably necessary or appropriate to vest fully in Purchaser, Purchaser Sub
and their respective successors or assigns, all of the properties, rights,
titles, interests, estates, remedies, powers and privileges intended to be
conveyed to Purchaser or Purchaser Sub under this Agreement and the Collateral
Agreements and to assure fully to Seller

                                        7
<PAGE>

and its Affiliates and their successors and assigns, the assumption of the
Assumed Liabilities, and to otherwise make effective the transactions
contemplated hereby and thereby.

Nothing in this Agreement or any Collateral Agreement nor the consummation of
the transactions contemplated hereby and thereby shall be construed as an
attempt or agreement to assign any Transferred Asset, including any Contract
(including those listed as items 1-6, 14 and 27 of Schedule 6.3 (the "Key
Contracts")), Permit, certificate, approval, authorization or other right, which
by its terms or by Law is nonassignable without the consent of a third party or
a Governmental Authority or is cancelable by a third party or Governmental
Authority in the event of an assignment ("Nonassignable Assets") unless and
until such consent shall have been obtained. Seller shall, and shall cause each
of its Affiliates to, use its commercially reasonable efforts (and with respect
to the Key Contracts, its best efforts) to obtain such consents promptly;
provided, however, no such consent shall require any payment by Purchaser or
Purchaser Sub or cause any change to such Nonassignable Asset without the prior
written consent of Purchaser. Purchaser shall use its commercially reasonable
efforts to assist and cooperate with Seller in fulfilling the foregoing
obligations, including making available to Seller any Transferred Employees to
the extent reasonably necessary therefor. To the extent permitted by applicable
Law, until the consents to assignment thereof are obtained (or in the event such
consents cannot be obtained), such Nonassignable Assets shall be held, as of and
from the Closing Date, by Seller or the applicable Affiliate of Seller in trust
for Purchaser and Purchaser Sub and the covenants and obligations thereunder
shall be performed by Purchaser or Purchaser Sub in Seller's or such Affiliate's
name and all benefits and obligations existing thereunder shall be for
Purchaser's or Purchaser Sub's account. Seller shall take or cause to be taken
at Purchaser's expense such reasonable actions in its name or otherwise as
Purchaser may reasonably request so as to provide Purchaser and Purchaser Sub
with the benefits of the Nonassignable Assets, to forward any notices received
by Seller with respect to the Nonassignable Assets and to effect collection of
money or other consideration that becomes due and payable under the
Nonassignable Assets, and Seller or the applicable Affiliate of Seller shall
promptly pay over to Purchaser or Purchaser Sub all money or other consideration
received by it in respect of all Nonassignable Assets. Once the consent to
assignment of any Nonassignable Asset is obtained, such Nonassignable Asset
shall be deemed to be automatically assigned to Purchaser or Purchaser Sub in
accordance with the terms and conditions of this Agreement without further
action by any party hereto. Except as expressly set forth herein, Seller shall
not have any liability to Purchaser or Purchaser Sub arising out of the
operation or management of the Nonassignable Assets other than for gross
negligence or willful misconduct or violations of its obligations under this
Agreement. As of and from the Closing Date, Seller on behalf of itself and its
Affiliates authorizes Purchaser and Purchaser Sub, to the extent permitted by
applicable Law and the terms of the Nonassignable Assets, at Purchaser's
expense, to perform all the obligations and receive all the benefits of Seller
or its Affiliates under the Nonassignable Assets and appoints Purchaser and
Purchaser Sub its attorney-in-fact to act in its name on its behalf or in the
name of the applicable Affiliate of Seller and on such Affiliate's behalf with
respect thereto.

                                    ARTICLE 3

                            ASSUMPTION OF LIABILITIES

         3.1      ASSUMED LIABILITIES. On the terms and subject to the
conditions hereof, at the Closing, Purchaser or Purchaser Sub shall assume and
thereafter, fully satisfy, pay, perform and discharge when due the following
Liabilities of Seller (the "Assumed Liabilities"):

                                        8
<PAGE>

                  (a)      all accounts payable and other accrued operating
expenses of Seller which have been incurred in the ordinary course of business
(which are reflected in the calculation of the Closing Cash Amount pursuant to
Section 4.3 and subject to adjustment pursuant to Section 4.5);

                  (b)      subject to Section 4.4, all deferred revenues
relating primarily to prepaid maintenance and support contracts which constitute
Assigned Contracts; and

                  (c)      all obligations under each of the Assigned Contracts
and Permits including the completion of work, product warranties, maintenance
and support, and indemnities thereunder.

         3.2      RETAINED LIABILITIES. Except as expressly provided under
Section 3.1, neither Purchaser nor Purchaser Sub assumes or agrees to pay,
satisfy, discharge or perform, and will not be deemed by virtue of the execution
and delivery of this Agreement or any Collateral Agreement, or as a result of
the consummation of the transactions contemplated herein and therein, to have
assumed, or to have agreed to pay, satisfy, discharge or perform, any Liability
of Seller or Parent (or any predecessor owner of all or part of their businesses
and assets) of whatever nature, known or unknown, contingent or otherwise,
whether presently in existence or arising hereafter, all such Liabilities not
being assumed being herein referred to as the "Retained Liabilities". The
Retained Liabilities shall be retained by and remain liabilities of Seller or
Parent, as applicable, and the Retained Liabilities for the purposes of this
Agreement shall include, except as expressly set forth in Section 3.1, the
following:

                  (a)      any Indebtedness of Seller or any of its Affiliates
(whether or not relating to the Software Business);

                  (b)      any Liability between Seller and any Affiliate of
Seller;

                  (c)      any Employment Costs and Liabilities with respect to
the Employees including any Liabilities incurred as a result of the execution
and performance of this Agreement by Seller;

                  (d)      any Liability with respect to Seller Plans;

                  (e)      any Liability for any Taxes, whether or not related
to the Software Business, the Transferred Assets, or the transactions
contemplated hereby and arising before or on the Closing Date;

                  (f)      any Liabilities with respect to any real property
owned or leased by Seller;

                  (g)      any Liabilities (including obligations to pay royalty
or similar payments) with respect to any grants, tax benefits, incentives or
subsidies from any Governmental Authority to Seller;

                  (h)      any Liability with respect to the Excluded Assets;
and

                                        9
<PAGE>

                  (i)      any Liabilities that may arise from or relating to a
Claim for any royalty, license or similar payments arising under item 2(b) to
Schedule 6.4, as amended by a First Addendum.

                                    ARTICLE 4

                                 PURCHASE PRICE

         4.1      PURCHASE PRICE. In consideration of the conveyance to
Purchaser or Purchaser Sub of the Transferred Assets and the other rights
granted to Purchaser or Purchaser Sub pursuant hereto and subject to the
conditions and in accordance with terms hereof, Purchaser shall at Closing (i)
issue to Elron or its assignee (subject to Section 10.3) 1,709,402 shares (the
"Shares") of Purchaser's common stock, par value $0.01 per share ("Purchaser
Stock"), (ii) deliver to Elron or its assignee (subject to Section 10.3) a
Convertible Promissory Note in the principal face amount of $1,000,000, in the
form of Exhibit A attached hereto (the "Convertible Note"), and (iii) assume the
Assumed Liabilities.

         4.2      SPECIAL ARRANGEMENTS RELATING TO THE SHARES. The Shares and
the Purchaser Stock issuable upon conversion of the Convertible Note (the
"Conversion Shares") shall be of the same class currently publicly listed on
NASDAQ under the symbol "ZIXI." The Shares and the Conversion Shares, at the
time of issuance, and the Convertible Note will not be registered under the
Securities Act of 1933, as amended (the "Securities Act"), and are being issued
to Seller in reliance upon an exemption from registration. The parties agree
that Seller shall be restricted from transferring or selling the Shares (but not
the Conversion Shares) for a period of one year following the Closing Date
(other than transfers or sales to Parent), subject to the following: (i) the
sale restrictions shall lapse with respect to 50% of the Shares upon the
effectiveness of the registration statement required to be filed by Purchaser
under the terms of the Registration Rights Agreement (as defined below); (ii)
the sale restrictions with respect to the remaining Shares shall lapse pro-rata
and monthly over the period beginning with the effectiveness of such
registration statement and the one year anniversary of the Closing Date and
(iii) the sale restrictions shall lapse in the entirety upon a merger,
consolidation or similar transaction between the Company and another entity
pursuant to which the Company is not the surviving corporation. The Shares and
the Conversion Shares will have the registration rights set forth in the
Registration Rights Agreement entered into and delivered at the Closing, in the
form of Exhibit B attached hereto (the "Registration Rights Agreement").

         4.3      CLOSING CASH AMOUNT. It is the intention of Purchaser, Seller
and Parent that the total cash and cash equivalents of Seller transferred to
Purchaser or Purchaser Sub at Closing pursuant to Section 2.1(h) shall be no
less than (i) $1,000,000 plus (ii) the amount, if any, that the total
liabilities assumed by Purchaser or Purchaser Sub pursuant to Section 3.1(a)
exceed (x) the items transferred to Purchaser or Purchaser Sub pursuant to
Section 2.1(j) plus (y) the items transferred to Purchaser or Purchaser Sub
pursuant to Section 2.1(k) (the "Closing Cash Amount"). Purchaser, Seller and
Parent have estimated, based on the unaudited balance sheet of Seller as of July
31, 2003, the Closing Cash Amount to be $1,056,559 in accordance with the
Closing Cash Schedule set forth as Schedule 4.3. Such estimated Closing Cash
Amount is being delivered by Seller to Purchaser or Purchaser Sub at Closing,
subject to adjustment as provided in Section 4.5.

                                       10
<PAGE>

         4.4      DEFERRED REVENUES. Parent and Seller have provided to
Purchaser in Schedule 4.4 (the "Deferred Revenues Schedule") a listing as of
July 31, 2003 of the deferred revenues (by Assigned Contract), which when
updated as to amount as of August 31, 2003, will be the deferred revenues
included in Section 3.1(b) as Assumed Liabilities. After Closing, Purchaser,
Parent and Seller shall jointly determine in good faith the amount of the
deferred revenues as of August 31, 2003. The parties shall use the process set
forth in Section 4.5(b) to resolve any disagreements relating to the amount of
the deferred revenues as of August 31, 2003.

         4.5      POST-CLOSING ADJUSTMENT.

                  (a)      As soon as practicable, but in no event later than 20
calendar days after the Closing Date, Parent and Seller shall close the books
and records of Seller as of the Closing Date and deliver to Purchaser an
unaudited balance sheet of Seller as of August 31, 2003 and an unaudited
statement of income of Seller for the period beginning August 1, 2003 and ending
on August 31, 2003, together with all supporting schedules and ledgers prepared
in connection therewith. Such balance sheet and statement of income shall be
prepared in accordance with GAAP, consistent with the accounting principles and
methods used in the preparation of the unaudited balance sheet of Seller as of
July 31, 2003. Each party will cooperate with the other party in the preparation
of such balance sheet and statement of income, including allowing Parent and
Seller and their representatives reasonable access after the Closing to the
personnel, books and records of Seller transferred to Purchaser or Purchaser
Sub, as applicable.

Purchaser shall notify Parent or Elron of any disagreement with such balance
sheet and statement of income within five business days after such items are
delivered to Purchaser. If no such notice is given, then the balance sheet and
statement of income delivered by Parent and Seller shall be deemed to be final,
conclusive and binding on the parties. If Purchaser notifies Parent or Elron in
writing within such period that it disagrees with such balance sheet and income
statement and specifies (i) the items as to which it so disagrees and the
reasons therefor and (ii) the amount of the adjustment it proposes with respect
to each item, then Purchaser and Parent or Elron will attempt to resolve their
differences with respect thereto. If Purchaser and Parent or Elron are unable to
resolve their dispute, the disputed items shall be referred, within 25 calendar
days after such balance sheet and statement of income are delivered to Parent
and Elron, to Ernst & Young LLP, certified public accountants (the "Firm") (or
if such firm is unable or unwilling to serve, to another nationally recognized
accounting firm selected by agreement between Purchaser and Parent or Elron),
which shall, within 30 calendar days after such referral, determine and report
to Purchaser, Parent and Elron upon such remaining disputed items. The decision
of the Firm shall be final, conclusive and binding on the parties hereto.

                  (b)      Upon Purchaser's acceptance (or the Firm's
resolution) of such balance sheet and statement of income delivered pursuant to
Section 4.5(a), Purchaser shall as soon as practicable, but in no event later
than ten business days, calculate the Closing Cash Amount as of August 31, 2003
(the "Post-Closing Cash Amount") and deliver such calculation to Parent and
Elron. Such calculation of the Post-Closing Cash Amount shall follow the
principles and methods utilized in calculating the $1,056,559 transferred by
Seller to Purchaser or Purchaser Sub at Closing pursuant to Section 4.3. Parent
or Elron shall notify Purchaser of any disagreement with such calculation within
five business days after such calculation is delivered to Parent and Elron. If
no such notice is given, then the calculation delivered by Purchaser shall be
deemed to be final, conclusive and binding on the parties. If Parent or Elron
notifies

                                       11
<PAGE>

Purchaser in writing within such period that it disagrees with the calculation
of the Post-Closing Cash Amount and specifies (i) the items as to which it so
disagrees and the reasons therefor and (ii) the amount of the adjustment it
proposes with respect to each item, then Purchaser and Parent or Elron will
attempt to resolve their differences with respect thereto. If Purchaser and
Parent or Elron are unable to resolve their dispute, the disputed items shall be
referred, within 25 calendar days after the calculation of the Post-Closing Cash
Amount is delivered to Parent and Elron, to the Firm (or if such firm is unable
or unwilling to serve, to another nationally recognized accounting firm selected
by agreement between Purchaser and Parent or Elron), which shall, within 30
calendar days after such referral, determine and report to Purchaser, Parent and
Elron upon such remaining disputed items. The decision of the Firm shall be
final, conclusive and binding on the parties hereto.

                  (c)      Within two business days after the finalization of
the Post-Closing Cash Amount pursuant to Section 4.5(b): (i) if the Post-Closing
Cash Amount exceeds $1,056,559, then Elron shall pay to Purchaser a cash amount
in immediately available funds equal to the extent of such excess; or (ii) if
the Post-Closing Cash Amount is less than $1,056,559, then Purchaser shall pay
to Elron a cash amount in immediately available funds equal to the amount of
such difference.

                                    ARTICLE 5

                                     CLOSING

         5.1      CLOSING. The consummation of the transactions contemplated
hereby (the "Closing") shall take place by mail or fax, or at such place as the
parties may designate, on the date hereof. The date on which the Closing is
effected is referred to in this Agreement as the "Closing Date".

         5.2      DELIVERIES AT CLOSING. At the Closing:

                  (a)      Seller hereby delivers, or has caused to be
delivered, to Purchaser and Purchaser Sub the items described below:

                           (i)      a Bill of Sale and Assignment and Assumption
                  Agreement, in the form attached hereto as Exhibit C (the "Bill
                  of Sale"), executed by Seller;

                           (ii)     a Trademark License Agreement, in the form
                  attached hereto as Exhibit D (the "Trademark License
                  Agreement"), executed by Parent and Elron;

                           (iii)    a Certificate of Amendment to be filed with
                  the Secretary of State of the State of Delaware for the name
                  change of Elron, executed by Elron;

                           (iv)     Consents to assignment relating to the
                  Assigned Contracts set forth on Schedule 5.2(a)(iv), in form
                  and substance acceptable to Purchaser;

                           (v)      all electronic representations of source
                  code, object code and associated documentation that relate to
                  the Software Products;

                                       12
<PAGE>

                           (vi)     copies, certified by the Secretary of Seller
                  and Parent (or another authorized officer), of resolutions
                  duly adopted by the Board of Directors of Seller and Parent
                  authorizing the execution, delivery and performance of this
                  Agreement and the transactions contemplated hereby;

                           (vii)    opinions of Seller's in-house and outside
                  counsel, in form and substance mutually agreeable to Seller
                  and Purchaser; and

                           (viii)   all other documents, certificates,
                  instruments or writings reasonably requested by Purchaser in
                  connection herewith.

                  (b)      Purchaser and Purchaser Sub hereby deliver to Seller
the items described below:

                           (i)      the Bill of Sale, executed by Purchaser and
                  Purchaser Sub;

                           (ii)     the certificates representing the Shares of
                  Purchaser Stock;

                           (iii)    the Convertible Note, executed by Purchaser;

                           (iv)     the Registration Rights Agreement, executed
                  by Purchaser;

                           (v)      an opinion of Purchaser's counsel, in form
                  and substance mutually agreeable to Seller and Purchaser;

                           (vi)     copies, certified by the Secretary of
                  Purchaser and Purchaser Sub (or another authorized officer),
                  of resolutions duly adopted by the Board of Directors of
                  Purchaser and Purchaser Sub authorizing the execution,
                  delivery and performance of this Agreement and the
                  transactions contemplated hereby;

                           (vii)    any applicable certificates or forms
                  necessary or appropriate in order to comply with Massachusetts
                  sales tax requirements; and

                           (viii)   all other documents, certificates,
                  instruments or writings reasonably requested by Seller in
                  connection herewith.

         5.3      DELIVERY OF TRANSFERRED ASSETS. Title to the Transferred
Assets shall pass to Purchaser or Purchaser Sub as of the Closing at the
applicable places of business of Seller. Promptly following the Closing, Seller
will place Purchaser or Purchaser Sub in full possession and control of the
Transferred Assets. All other assets and information to be delivered to
Purchaser or Purchaser Sub will be delivered by Seller to such locations and in
such manner as Purchaser shall designate by means of delivery reasonably
designated by Purchaser, at Purchaser's cost and risk of loss (other than Losses
due to the gross negligence or willful misconduct of Seller).

                                       13
<PAGE>

                                    ARTICLE 6

                    REPRESENTATIONS AND WARRANTIES OF SELLER

                  Seller hereby makes the following representations and
warranties to Purchaser and Purchaser Sub, and Parent, with respect to Section
6.18 only, hereby makes the following representations and warranties to
Purchaser and Purchaser Sub, each of which shall be unaffected by any
investigation heretofore or hereafter made by Purchaser or Purchaser Sub.

         6.1      ORGANIZATION AND GOOD STANDING. Seller is a corporation duly
organized, validly existing and in good standing, if applicable, under the Laws
of the jurisdiction of its organization and has all requisite corporate power
and authority to own, lease or otherwise hold its properties and assets
(including the Transferred Assets) and to carry on its business (including the
Software Business) as presently conducted.

         6.2      AUTHORIZATION AND EFFECT OF AGREEMENT. Seller has all
requisite corporate power and authority to execute and to deliver this Agreement
and the Collateral Agreements to which it is a party (the "Seller Collateral
Agreements") and to perform the transactions contemplated hereby and thereby.
The execution and delivery by Seller of this Agreement and the Seller Collateral
Agreements and the performance by Seller of the transactions contemplated hereby
and thereby have been duly authorized by all necessary corporate action on the
part of Seller. This Agreement and the Seller Collateral Agreements have been
duly executed and delivered by Seller and each such agreement constitutes a
valid and binding agreement of Seller, enforceable against Seller in accordance
with its terms, subject to applicable bankruptcy, insolvency, fraudulent
transfer, reorganization, moratorium, and similar Laws affecting creditors'
rights and remedies generally and subject, as to enforceability, to general
principles of equity.

         6.3      NO CONFLICTS. Except as set forth on Schedule 6.3, the
execution and delivery of this Agreement and the Seller Collateral Agreements by
Seller does not, and the performance by Seller of the transactions contemplated
by this Agreement and the Seller Collateral Agreements, including the transfer
of the Transferred Assets and the assignment of the Assigned Contracts, does
not, conflict with, or result in any violation of, or constitute a default
under, or, as applicable, give rise to the creation of any Lien, other than a
Permitted Lien, upon any of the Transferred Assets or to a right of termination,
cancellation or acceleration of any obligation or to a loss of a benefit under,
(i) any provision of the Certificate of Incorporation or Bylaws or other
applicable constituent documents of Seller, (ii) any of the terms, conditions or
provisions of any Assigned Contract or (iii) any Law or Order applicable to or
binding on Seller or the Transferred Assets. Except as set forth on Schedule
6.3, no Consent is required to be obtained, made or given (whether pursuant to
applicable Law, Contract or otherwise) in connection with the execution and
delivery of this Agreement or the Seller Collateral Agreements by Seller or the
performance by Seller of the transactions contemplated hereby or thereby.

         6.4      SUFFICIENCY OF THE ASSETS; TITLE TO TRANSFERRED ASSETS; NO
THIRD PARTY OPTIONS.

                  (a)      Except as set forth on Schedule 6.4(a) and the
license provided by the Trademark License Agreement, the Transferred Assets
constitute all of the rights, properties

                                       14
<PAGE>

and assets of every kind, character and description, wherever located and
whether tangible or intangible, real or personal, or fixed or contingent, that
are necessary to operate, or primarily used or held for use in, the Software
Business as currently conducted by Seller. All of the tangible Transferred
Assets referred to in Section 2.1(a) are in good operating condition and repair,
subject to ordinary wear and maintenance, and are usable in the regular and
ordinary course of the Software Business.

                  (b)      Except as set forth on Schedule 6.4(b), Seller has
sole, good, valid and marketable title to the Transferred Assets, and, at the
Closing, Seller will convey to Purchaser or Purchaser Sub, sole, good, valid and
marketable title to the Transferred Assets, free and clear of all Liens, except
Permitted Liens. Except as set forth on Schedule 6.4(b), as of immediately prior
to the Closing, no third party has any exclusive right to use or an exclusive
license to any of the Transferred Assets or any portion thereof.

                  (c)      Except as set forth on Schedule 6.4(c), there are no
existing agreements, options or commitments granting to any Person the right to
acquire any of the Transferred Assets or any interest therein.

         6.5      FINANCIAL DATA. Set forth on Schedule 6.5 is (i) the audited
balance sheet of Seller as of December 31, 2002 and the related audited
statements of income and cash flows for the twelve months ended December 31,
2002 and (ii) the unaudited balance sheet of Seller as of June 30, 2003 and the
related statements of income and cash flows for the six months ended June 30,
2003 (collectively, the "Financial Statements"). The Financial Statements are
true and correct in all material respects and present fairly the financial
condition and operating results of the Company in all material respects as of
the dates and during the periods indicated and have been prepared in accordance
with United States generally accepted accounting principles ("GAAP")
consistently applied, except that the unaudited Financial Statements do not
contain all footnotes required by GAAP.

         6.6      LITIGATION. Except as set forth on Schedule 6.6:

                  (a)      there are no Claims pending or, to the Knowledge of
Seller, threatened that question the validity of this Agreement or any
Collateral Agreement or any action taken or to be taken by Seller in connection
with this Agreement or any Collateral Agreement;

                  (b)      there are no Claims relating to the conduct of the
Software Business or otherwise affecting any Transferred Asset pending, or, to
the Knowledge of Seller, threatened against Seller; and

                  (c)      there are no Orders binding on Seller that relate to
the Software Business or otherwise affect any Transferred Asset.

         6.7      SOFTWARE PRODUCTS. Schedule 6.7 sets forth a complete list of
the Software Products by release name and a description thereof.

         6.8      ASSIGNED CONTRACTS.

                  (a)      Each Assigned Contract is in full force and effect
and is a valid and enforceable obligation of Seller and to the Seller's
Knowledge each other party thereto, subject

                                       15
<PAGE>

to applicable bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar Laws affecting creditors' rights and remedies generally
and subject, as to enforceability, to general principles of equity. Except as
set forth on Schedule 6.8(a), Seller is not, and to the Knowledge of Seller, no
other party thereto is, in default in the performance, observance or fulfillment
of any material obligation under any Assigned Contract. Except as set forth on
Schedule 6.8(a), no event has occurred which with or without the giving of
notice or lapse of time, or both, would constitute a default under any Assigned
Contract. Seller has provided Purchaser with true, complete and correct copies
of each Assigned Contract, and any amendment or modification thereto, or a
written description of any Assigned Contract that is not in writing.

                  (b)      Except as set forth on Schedule 6.8(b), there are no
licenses currently in effect, whether written or oral, with respect to any
Software Products or the Intellectual Property in the Software Products or
licenses from Seller's partners or licensors, other than any Software licenses
to Seller's resellers, distributors, channel partners or customers entered into
in the ordinary course of business. None of such licenses authorize any licensee
to have access to source code with respect to the Software. No Software has been
transferred to any escrow agents, except as set forth on Schedule 6.8(b). No
source code to the Software has been transferred to any Person except as set
forth on Schedule 6.8(b).

         6.9      COMPLIANCE WITH LAWS. Except as set forth on Schedule 6.9, to
the Knowledge of Seller, Seller has conducted and is conducting the Software
Business in compliance with all applicable Laws.

         6.10     PERSONNEL; LABOR MATTERS.

                  (a)      Schedule 6.10(a) sets forth a complete and correct
list, as of the Closing Date, of all Transferred Employees including as
applicable, (i) salary, hourly wage rate, bonus or retention rate and (ii)
position or title.

                  (b)      No Transferred Employees are represented by any labor
organization, and there are no labor or collective bargaining agreements, which
pertain to the Transferred Employees. To the Knowledge of Seller, no labor
organization or group of Employees has made a pending demand for recognition or
certification affecting the Transferred Employees, and, within the preceding
three years, there have been no representation, certification or other related
proceedings, or petitions seeking a representation proceeding or other related
proceeding, pending or, to the Knowledge of Seller, threatened to be brought or
filed with the National Labor Relations Board or any other labor relations
tribunal or authority. Within the preceding three years, there have been no
organizing activities involving Seller pending or, to the Knowledge of Seller,
threatened by any labor organization or group of employees affecting the
Transferred Employees.

                  (c)      There are no strikes, work stoppages, slowdowns,
lockouts, arbitrations, grievances, unfair labor practice charges or complaints
pending or, to the Knowledge of Seller, threatened involving any Transferred
Employees and, to the Knowledge of Seller, there are no facts or circumstances
which could form the basis for any of the foregoing. None of the Transferred
Employees have resigned or have given written notice to Seller of their
intention to resign or otherwise voluntarily terminate their employment with
Seller.

                                       16
<PAGE>

                  (d)      There are no complaints, charges or claims against
Seller pending or, to the Knowledge of Seller, threatened to be brought or filed
with any Governmental Authority based on, arising out of, in connection with, or
otherwise relating to the employment of any of the Transferred Employees,
including ERISA, the Civil Rights Laws, Americans with Disabilities Act, Age
Discrimination in Employment Act (as amended by the Older Workers Benefit
Protection Act), Pregnancy Discrimination Act, Equal Pay Act, Fair Labor
Standards Act, Worker Adjustment and Retraining Notification Act, and Family and
Medical Leave Act, and, to the Knowledge of Seller, there are no facts or
circumstances which could form the basis for any of the foregoing.

         6.11     INTELLECTUAL PROPERTY.

                  (a)      As used herein, the term "Scheduled Intellectual
Property" means, whether solely or jointly owned, Seller's domestic and foreign
patents (including design registrations and other government grants of rights to
inventions), patent applications, patent licenses from third parties, software
licenses from third parties (other than routine, non-negotiated, shrink wrap or
similar licenses of the type commonly available at reasonable cost to any Person
in general and which are not a part of the Software Products), know-how licenses
from third parties, trade names, trademarks, trademark registrations and
applications, service marks, service mark registrations and applications,
copyrights, copyright registrations and applications and data sheets with
copyright marks, in the Software Products. Schedule 6.11(a) sets forth all of
the Scheduled Intellectual Property necessary to operate, or primarily used or
held for use in, the Software Business. Except as otherwise indicated on
Schedule 6.11(a), Seller is the sole and exclusive owner of all Scheduled
Intellectual Property and there are, to the Knowledge of Seller, no third party
rights that impede, limit or otherwise restrict Seller's sole and exclusive
ownership of the Scheduled Intellectual Property.

                  (b)      Except as set forth on Schedule 6.11(b), each current
and former officer, employee, consultant and independent contractor of Seller
who has originated, invented or developed any of the Software Products either
(i) has executed a valid written assignment needed to vest in Seller sole
ownership of the Intellectual Property in the Software Products originated,
invented or developed by such officer, employee, consultant or contractor and,
to the extent applicable to such officer, employee, consultant or contractor,
any of Seller's Intellectual Property contained in any of the Transferred Assets
or (ii) has executed an agreement which includes an express and transferable
assignment to Seller all rights to the Intellectual Property in the Software
Products originated, invented or developed by such officer, employee, consultant
or contractor during the course of such Person's relationship with Seller. No
such officer, employee, consultant or contractor has notified Seller in writing,
or, to the Knowledge of Seller, has otherwise made any Claim, that such party
is, or believes himself or herself to be, the owner of any of the Intellectual
Property in the Software Products.

                  (c)      Except as set forth on Schedule 6.11(c), Seller has
taken all commercially reasonable actions to protect and preserve the
confidentiality of all Intellectual Property in, or primarily related to, the
Software Products covering trade secrets, know-how, Confidential Information,
other non-public proprietary technical and business information, proprietary
processes and formulae not otherwise protected by patents, patent applications
or copyrights (the "Software Business Confidential Information").

                                       17
<PAGE>

                  (d)      Except as set forth on Schedule 6.11(d), each current
and former officer, employee, consultant and independent contractor of Seller
who has worked in the Software Business has executed a confidentiality and
non-disclosure agreement or is by Law or otherwise obligated to protect and
preserve the confidentiality of the Software Business Confidential Information.

                  (e)      Except as set forth on Schedule 6.11(e), to the
Knowledge of Seller no Software Business Confidential Information primarily
related to the Software Products has been disclosed or is authorized to be
disclosed to any third party, other than pursuant to a confidentiality and
non-disclosure agreement that protects Seller's proprietary interests in and to
such Software Business Confidential Information or under circumstances in which
the third party is under a legal duty not to disclose such Software Business
Confidential Information to others.

                  (f)      Except as set forth on Schedule 6.11(f), no source
code relating to the Software Products has been disclosed or transferred to any
Person, and, except as set forth on Schedule 6.11(f), the execution and delivery
of this Agreement or any Collateral Agreement by Seller will not result in any
such transfer, to a Person other than Purchaser or Purchaser Sub, either
directly, or indirectly, pursuant to the terms of an escrow arrangement or
otherwise.

                  (g)      To the Knowledge of Seller, the Software Products do
not interfere with, infringe, misappropriate or otherwise come into conflict
with any Intellectual Property rights of third parties, and, except as set forth
on Schedule 6.11(g), Seller has not received any Claim alleging any such
interference, infringement, misappropriation or conflict. To the Knowledge of
Seller, the manufacturing, marketing, licensing, use or sale of the Software
Products does not interfere with, infringe, misappropriate or otherwise come
into conflict with any Intellectual Property right of any third party. Except as
set forth in Schedule 6.11(g), no third party has, to the Knowledge of Seller,
interfered with, infringed upon, misappropriated or otherwise come into conflict
with any Intellectual Property rights of Seller in the Software Products.

                  (h)      Except as set forth on Schedule 6.11(h), Seller is
not, nor as a result of the execution and delivery of this Agreement or any
Collateral Agreement or the performance by Seller of its obligations herein or
therein or as a result of the transactions contemplated hereby or thereby will
Seller be, in breach of any license, sublicense or other agreement primarily
relating to the Intellectual Property in the Software Products.

                  (i)      Except as set forth on Schedule 6.11(i), Seller does
not use in the Software Products pursuant to license, sublicense, agreement or
permission, any Intellectual Property owned by a third party.

         6.12     SOFTWARE.

                  (a)      Except as set forth on Schedule 6.12(a), the past and
current versions released since December 31, 2001 of all Software Products
perform substantially in accordance with the version-specific user
Documentation.

                  (b)      To the Knowledge of Seller, no Employee is, or is now
expected to be, in default under any employment contract with Seller or any
other restrictive covenant for the benefit of Seller relating to the Software
Products.

                                       18
<PAGE>

                  (c)      Except as set forth on Schedule 6.12(c), the Software
Products were developed entirely by the employees of and consultants to Seller
which were bound by agreements assigning all rights to the Software Products to
Seller, or, if not, Seller has purchased such Software from the party in whom
title to such Software was, to the Knowledge of Seller, fully and exclusively
vested.

                  (d)      Except as set forth on Schedule 6.12(d), Seller has
no obligation to compensate any Person for the development, use, license, sale,
marketing or exploitation of the Software Products.

                  (e)      Except as set forth on Schedule 6.12(e), there have
been no patents applied for and no copyrights registered for the Software
Products.

                  (f)      After giving effect to the transactions contemplated
by this Agreement, neither Seller nor any of its Affiliates will retain or have
in its possession any copies of the code relating to the Software Products.

         6.13     MAJOR CUSTOMERS. Schedule 6.13 sets forth the names of the ten
largest customers of Seller relating to the Software Products for the year 2002
and for the six month period ended June 30, 2003, other than resellers,
distributors or channel partners (based on the aggregate value of the Software
Products purchased from Seller by such customers during such period) and the
amount of revenue attributed to each such customer during such period.

         6.14     CONDUCT OF THE BUSINESS IN THE ORDINARY COURSE; ABSENCE OF
CERTAIN CHANGES, EVENTS AND CONDITIONS. Since December 31, 2002, except as set
forth in Schedule 6.14, Seller has conducted the Software Business in the
ordinary course and consistent with past practice and there has not been any
event, occurrence, development or state of circumstances or facts which
individually or in the aggregate has had or could reasonably be expected to have
a Material Adverse Effect.

         6.15     EMPLOYEE BENEFIT PLANS.

                  (a)      Each Seller Plan intended to qualify under Section
401 of the Code is so qualified and has been established and administered in
accordance with the applicable provisions of ERISA, the Code and other
applicable laws, rules and regulations, except as would not result in any
liability to Buyer.

                  (b)      Except as set forth on Schedule 6.15(b), neither the
execution and delivery of this Agreement nor the consummation of the
transactions contemplated hereby will (i) result in any payment becoming due to
any Employee, (ii) increase any benefits otherwise payable under any Seller Plan
or (iii) result in the acceleration of the time of payment or vesting of any
such benefits under any such plan.

         6.16     LICENSES AND PERMITS. Schedule 6.16 sets forth all Permits
necessary to (i) carry on the Software Business as presently conducted, (ii) own
or hold under lease the properties and assets of the Software Business and (iii)
perform all of the obligations under the Assigned Contracts in each case held by
Seller or any of its Affiliates.

         6.17     SUBSIDIARIES. Elron Software (2000) Ltd. has no material
liabilities or creditors.

                                       19
<PAGE>

         6.18     INVESTMENT REPRESENTATIONS.

                  (a)      Each of Parent and Seller is acquiring the Shares and
the Convertible Note for its own account and not with a view towards, or for
resale in connection with, the public sale or distribution thereof, except
pursuant to sales registered or exempted under the Securities Act.

                  (b)      Each of Parent and Seller is an "accredited investor"
as such term is defined in Rule 501 promulgated under the Securities Act.

                  (c)      Each of Parent and Seller understands that the Shares
and the Convertible Note are being offered and sold to it in reliance on
specific exemptions from the registration requirements of federal and state
securities Laws and that Purchaser is relying in part upon the truth and
accuracy of, and Parent's and Seller's compliance with, the representations,
warranties, agreements, acknowledgments and understandings of Parent and Seller
set forth herein in order to determine the availability of such exemptions and
the eligibility of Parent and Seller to acquire the Shares and the Convertible
Note.

                  (d)      Each of Parent and Seller and its respective
advisors, if any, have been furnished with all materials relating to the
business, finances and operations of Purchaser and materials relating to the
offer and issuance of the Shares and the Convertible Note that have been
requested by Parent and Seller. Each of Parent and Seller and its respective
advisors, if any, have been afforded the opportunity to ask questions of
Purchaser. Each of Parent and Seller understands that any investment in the
Shares or the Convertible Note involves a high degree of risk. Each of Parent
and Seller understands that all forward-looking information provided to Parent
and Seller either verbally or in written materials may differ materially from
actual results, including: any projections of future business, market share,
earnings, revenues or other financial items; any statements of the plans,
strategies and objectives of management for future operations; any statements
concerning proposed new products, services or developments; any statements
regarding future economic conditions or performance; any statements of belief;
and any statements of assumptions underlying any of the foregoing. Each of
Parent and Seller has sought such accounting, legal and tax advice as it has
considered necessary to make an informed investment decision with respect to its
acquisition of the Shares and the Convertible Note.

                  (e)      Each of Parent and Seller understands that no United
States federal or state agency or any other Governmental Authority has passed on
or made any recommendation or endorsement of the Shares or the Convertible Note
or the fairness or suitability of the investment in the Shares or the
Convertible Note, nor have such authorities passed upon or endorsed the merits
of the offering of the Shares or the Convertible Note.

                  (f)      Each of Parent and Seller understands that except as
provided in the Registration Rights Agreement: (i) the Shares and the
Convertible Note have not been and are not being registered under the Securities
Act or any state securities Laws, and may not be offered for sale, sold,
assigned or transferred unless (A) subsequently registered under the Securities
Act or (B) Parent or Seller, as applicable, shall have delivered to Purchaser an
opinion of counsel, in a generally acceptable form, to the effect that such
Shares or such Convertible Note to be sold, assigned or transferred

                                       20
<PAGE>

may be sold, assigned or transferred pursuant to an exemption from such
registration and (ii) neither Purchaser nor any other Person is under any
obligation to register the Shares or the Convertible Note under the Securities
Act or any state securities Laws or to comply with the terms and conditions of
any exemption thereunder. Notwithstanding the foregoing, each of Parent and
Seller understands that the Shares will be subject to certain transfer
restrictions as set forth in Section 4.2 of this Agreement.

                  (g)      Each of Parent and Seller understands that until such
time as the sale of the Shares, the Convertible Note or the Conversion Shares
has been registered under the Securities Act, the stock certificates
representing the Shares and the Conversion Shares and the Convertible Note
itself shall bear a restrictive legend in substantially the following form (and
a stop-transfer order may be placed against transfer of such stock
certificates):

         THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
         UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE
         SECURITIES LAWS. THE SHARES MAY NOT BE OFFERED FOR SALE, SOLD, ASSIGNED
         OR TRANSFERRED IN THE ABSENCE OF (I) AN EFFECTIVE REGISTRATION
         STATEMENT FOR THE SHARES UNDER THE SECURITIES ACT OF 1933, AS AMENDED,
         OR APPLICABLE STATE SECURITIES LAWS OR (II) AN OPINION OF COUNSEL, IN A
         GENERALLY ACCEPTABLE FORM, THAT REGISTRATION IS NOT REQUIRED UNDER SAID
         ACT OR APPLICABLE STATE SECURITIES LAWS.

The legend set forth above shall be removed and Purchaser shall issue a
certificate without such legend to the holder of the Shares, the Convertible
Note or the Conversion Shares upon which it is stamped, if, unless otherwise
required by state securities Laws, (i) such Shares, Convertible Note or
Conversion Shares are registered for resale under the Securities Act or (ii) in
connection with a sale transaction, such holder provides Purchaser with an
opinion of counsel, in a generally acceptable form, to the effect that a public
sale, assignment or transfer of the Shares, the Convertible Note or the
Conversion Shares may be made without registration under the Securities Act.

                                    ARTICLE 7

                        REPRESENTATIONS AND WARRANTIES OF
                           PURCHASER AND PURCHASER SUB

                  Purchaser and Purchaser Sub hereby, jointly and severally,
make the following representations and warranties to Seller and Parent, each of
which shall be unaffected by any investigation heretofore or hereafter made by
Seller or Parent.

         7.1      CORPORATE ORGANIZATION. Each of Purchaser and Purchaser Sub is
a corporation duly organized, validly existing and in good standing under the
Laws of the state of its incorporation and has all requisite corporate power and
authority to own, lease or otherwise hold its properties and assets and to carry
on its business as presently conducted.

                                       21
<PAGE>

         7.2      AUTHORIZATION AND EFFECT OF AGREEMENT. Each of Purchaser and
Purchaser Sub has all requisite corporate power and authority to execute and
deliver this Agreement and the Collateral Agreements to which it is a party (the
"Purchaser Collateral Agreements") and to perform the transactions contemplated
hereby and thereby. The execution and delivery by Purchaser and Purchaser Sub of
this Agreement and the Purchaser Collateral Agreements and the performance by
Purchaser and Purchaser Sub of the transactions contemplated hereby and thereby
have been duly authorized by all necessary corporate action on the part of
Purchaser and Purchaser Sub. This Agreement and the Purchaser Collateral
Agreements have been duly executed and delivered by Purchaser and Purchaser Sub
and each of such agreements constitutes a valid and binding agreement of
Purchaser and Purchaser Sub enforceable against Purchaser and Purchaser Sub in
accordance with its terms, subject to applicable bankruptcy, insolvency,
fraudulent transfer, reorganization, moratorium and similar Laws affecting
creditors' rights and remedies generally and subject, as to enforceability, to
general principles of equity.

         7.3      NO CONFLICTS. The execution and delivery of this Agreement and
the Purchaser Collateral Agreements by Purchaser and Purchaser Sub does not, and
the performance by Purchaser and Purchaser Sub of the transactions contemplated
by this Agreement and the Purchaser Collateral Agreements will not, conflict
with, or result in any violation of, or constitute a default under (i) any
provision of the Articles of Incorporation or Bylaws or other applicable
constituent documents of Purchaser or Purchaser Sub, (ii) any of the terms,
conditions or provisions of any material agreement to which Purchaser or
Purchaser Sub is a party or pursuant to which its assets or properties are bound
or (iii) any Law or Order applicable to or binding on Purchaser or Purchaser
Sub. No Consent is required to be obtained, made or given (whether pursuant to
applicable Law, Contract or otherwise) in connection with the execution and
delivery of this Agreement or any Purchaser Collateral Agreement by Purchaser or
the performance by Purchaser of the transactions contemplated hereby or thereby,
other than applicable securities Laws filings.

         7.4      LITIGATION. There are no Claims pending or, to Purchaser's
knowledge, threatened that question the validity of this Agreement or any action
taken or to be taken by Purchaser or Purchaser Sub in connection with this
Agreement or any Purchaser Collateral Agreement.

         7.5      PURCHASER STOCK. The Shares of Purchaser Stock to be issued to
Seller under this Agreement and the Conversion Shares issued pursuant to the
terms and conditions of the Convertible Note shall be the same class and series
as those shares of Purchaser publicly traded and listed on NASDAQ under the
symbol "ZIXI," and Purchaser has sufficient authorized and unissued shares of
Purchaser Stock to issue the Shares to Seller in accordance with this Agreement
and the Conversion Shares in accordance with the Convertible Note. The Shares
and the Conversion Shares, when issued, will be duly authorized, validly issued,
fully paid and non-assessable and will be issued free and clear of any Liens and
will not be subject to any restriction on transfer (other than those imposed by
applicable securities Laws, this Agreement or the Registration Rights
Agreement), options to purchase, preemptive rights, rights of first refusal or
other purchase rights under any of Purchaser's organizational documents or
agreements or under applicable Law.

         7.6      CAPITALIZATION. All issued and outstanding shares of
Purchaser's capital stock have been duly authorized and validly issued, are
fully paid and nonassessable, and were issued

                                       22
<PAGE>

in compliance with all applicable federal and state securities Laws. Except as
set forth in Schedule 7.6, there are no options, warrants, conversion
privileges, or preemptive or other rights or agreements presently outstanding to
purchase or otherwise acquire any authorized but unissued shares of the capital
stock or other securities of Purchaser or rights in the nature of stock
appreciation rights or phantom equity rights. Except as set forth in Schedule
7.6, Purchaser holds no shares of its capital stock in its treasury. Purchaser
has, as of the date hereof, and will have, as of the Closing Date, sufficient
authorized Common Stock to satisfy its obligations under Section 4.1 hereof.

         7.7      SEC FILINGS; FINANCIAL STATEMENTS.

                  (a)      Purchaser has filed all forms, reports and documents
required to be filed by Purchaser with the Securities and Exchange Commission
(the "SEC") since the filing of Purchaser's amended annual report on Form 10-K/A
for the year ended December 31, 2001 with the SEC on May 24, 2002. All such
forms, reports and documents, including Purchaser's amended annual report on
Form 10-K/A for the year ended December 31, 2001, are referred to herein as the
"Purchaser SEC Reports." As of their respective dates, each of the Purchaser SEC
Reports, as of the date filed and as they may have been subsequently amended,
complied, when filed, in all material respects with the requirements of the
Securities Act, or the Securities Exchange Act of 1934, as amended, as the case
may be, and the rules and regulations of the SEC thereunder applicable to such
Purchaser SEC Reports. As of their respective dates, the Purchaser SEC Reports
did not contain any untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary to make the statements
therein, in light of the circumstances under which they were made, not
misleading.

                  (b)      Purchaser satisfies the requirements for use of Form
S-3 for registration of the resale of Purchaser Stock (as contemplated by the
Registration Rights Agreement).

                  (c)      Purchaser is not in violation of the listing
requirements of Nasdaq or its listing agreement with Nasdaq and Purchaser has
not been notified of any existing facts or circumstances that could reasonably
be expected to cause the Purchaser's stock to no longer be quoted for trading on
Nasdaq. The Shares and the Conversion Shares are, subject to notice of issuance,
duly authorized for trading on the Nasdaq National Market.

         7.8      ABSENCE OF CERTAIN CHANGES. Since December 31, 2002, there has
not been any event, occurrence, development or state of circumstances or facts
which individually or in the aggregate has had or could reasonably be expected
to have a material adverse effect on Purchaser.

         7.9      PURCHASER SUB FORMATION. Purchaser Sub was formed solely for
the purpose of engaging in the transactions contemplated by this Agreement and
has engaged in no business activities other than as contemplated by this
Agreement.

                                       23
<PAGE>

                                    ARTICLE 8

                             POST-CLOSING COVENANTS

         8.1      COVENANT NOT TO COMPETE; NON SOLICITATION.

                  (a)      Parent and Seller agree that from and after the
Closing Date until the second anniversary of the Closing Date, other than Parent
or Seller's ownership interest in Purchaser, Parent and Seller shall not, and
shall cause their respective wholly-owned subsidiaries (each of Parent, Seller,
and such wholly-owned subsidiaries are a "Restricted Person") not to, directly
or indirectly, either through any form of ownership, or as a member, partner,
joint venturer, or in any other capacity whatsoever either for its own benefit
or for the benefit of any other Person, own, manage, operate, lend to, control,
invest in, acquire an equity interest in, or participate in the ownership,
management, operation or control (a "Prohibited Activity") of any business or
Person engaged in a Prohibited Business. "Prohibited Business" means the
development, design, manufacturing, marketing or sale of software or solutions
for Internet monitoring, Web and email filtering, spam and virus protection
having substantially the same performance characteristics and functionality as
the Software Products; provided, however, that nothing herein shall (i) preclude
a Restricted Person from owning an equity interest of five percent or less of
any publicly traded company listed on a national stock exchange or on the Nasdaq
National Market System or (ii) preclude Parent and its Affiliates from
continuing to make debt and equity investments in any Person which as of the
date of this Agreement Parent or such Affiliate currently has such an investment
or a contractual right or obligation to make such an investment.

                  (b)      From and after the Closing Date and until the second
anniversary of the Closing Date, Parent and Seller will not, and shall cause
their respective wholly-owned subsidiaries not to, directly or indirectly
solicit, offer employment to or hire any Transferred Employee (i) who is still
an employee of Purchaser or any Affiliate of Purchaser or (ii) who has, without
the consent of Purchaser or such Affiliate, as applicable, terminated his or her
employment with Purchaser or such Affiliate, as applicable, within 180 calendar
days of such solicitation, offer or hire; provided, however, that the foregoing
provision will not prevent Seller from soliciting the employment of any person
pursuant to a general advertisement or similar notice.

         8.2      CONFIDENTIALITY.

                  (a)      Except as required by any Contract to which Seller is
bound involving a license of the Software Products to a third party, each party
agrees that from and after the Closing, it will not, and shall cause its
respective Affiliates not to, directly or indirectly, disclose, reveal, divulge
or communicate to any Person other than its authorized officers, directors and
employees, or use or otherwise exploit for its own benefit or for the benefit of
anyone other than the other party, any Non-Public Information (as defined below)
of the other party. Neither party shall have any obligation to keep confidential
any Non-Public Information if and to the extent disclosure thereof is
specifically required by Law or in the enforcement of its rights hereunder;
provided, however, that in the event disclosure is required by applicable Law,
the disclosing party shall, to the extent reasonably possible, provide the other
party with prompt notice of such requirement prior to making any disclosure so
that the other party may

                                       24
<PAGE>

seek an appropriate protective order. For purposes of this Section 8.2,
"Non-Public Information" shall mean any Confidential Information that, with
respect to Seller or Parent, relates to Seller's or Parent's business (other
than the Software Business), and, with respect to Purchaser, relates to
Purchaser's or Purchaser Sub's business (including the Software Business). The
term Non-Public Information does not include, and there shall be no obligation
hereunder with respect to, information that (i) is generally available to the
public on the date of this Agreement, (ii) becomes generally available to the
public other than as a result of a disclosure by a party not otherwise
permissible hereunder or (iii) a party learns from other sources and such
sources have not violated their confidentiality obligation to the other party.

                  (b)      Notwithstanding anything to the contrary set forth
herein or in any other agreement to which the parties hereto are parties or by
which they are bound, the obligations of confidentiality contained herein and
therein, as they relate to the transactions contemplated in this Agreement,
shall not apply to the tax structure or tax treatment of such transactions, and
each party hereto (and any employee, representative or agent of any party
hereto) may disclose to any and all persons, without limitation of any kind, the
tax structure and tax treatment of such transactions. The preceding sentence is
intended to cause such transactions not to be treated as having been offered
under conditions of confidentiality for purposes of Section 1.6011-4(b)(3) (or
any successor provision) of the Treasury Regulations promulgated under Section
6011 of the Code, and shall be construed in a manner consistent with such
purpose. In addition, each party hereto acknowledges that it has no proprietary
or exclusive rights to the tax structure of such transactions or any tax matter
or tax idea related to such transactions.

         8.3      SPECIFIC PERFORMANCE; REFORMATION. The parties hereto
specifically acknowledge and agree that any remedy at Law for any breach of
Section 8.1 or Section 8.2 will be inadequate and that a party, in addition to
any other relief available to it, shall be entitled to temporary and permanent
injunctive relief without the necessity of proving actual damage or posting any
bond whatsoever. In the event that the provisions of Section 8.1 or Section 8.2
should ever be deemed to exceed the limitations provided by applicable Law, then
the parties hereto agree that such provisions shall be reformed to set forth the
maximum limitations permitted.

         8.4      FURTHER COOPERATION. Seller will cooperate with Purchaser,
upon Purchaser's reasonable request and at Purchaser's expense, in any actions
or proceedings necessary for the protection, enforcement or transfer of
Purchaser's or Purchaser Sub's exclusive ownership rights in any of the
Transferred Assets.

         8.5      MAINTENANCE OF BOOKS AND RECORDS. Each of Seller and Purchaser
shall preserve until the fourth anniversary of the Closing Date all records
possessed by such party relating primarily to the Transferred Assets or the
operation of the Software Business prior to the Closing Date. After the Closing
Date, where there is a legitimate purpose, such party shall provide the other
party with reasonable access, upon prior reasonable written request specifying
the need therefor, during regular business hours, to (i) the relevant officers
and employees of such party and (ii) the books of account and records of such
party, but, in each case, only to the extent primarily relating to the
Transferred Assets or the operation of the Software Business prior to the
Closing Date, and the other party and its representatives shall have the right
to make copies of such books and records at their sole expense; provided,
however, that the foregoing right of access shall not be exercisable in such a
manner as to interfere unreasonably with the

                                       25
<PAGE>

normal operations and business of such party; and provided further that, to the
extent such information constitutes Confidential Information of such party, the
requesting party will not, and shall ensure that its representatives are bound
not to disclose such information except (i) as required by Law, (ii) with the
prior written consent of such party, which consent shall not be unreasonably
withheld, or (iii) where such information becomes available to the public
generally, or becomes generally known to competitors of such party, through
sources other than the requesting party and its representatives. Such records
may nevertheless be destroyed by a party if such party sends the other party
written notice of its intent to destroy records, specifying with particularity
the contents of the records to be destroyed. Such records may then be destroyed
after the 30th day following delivery of such notice unless the other party
objects to the destruction, in which case the party seeking to destroy the
records shall either agree to retain such records or to deliver such records to
the objecting party at the objecting party's sole expense.

         8.6      TRANSFERRED EMPLOYEES. Either Purchaser or Purchaser Sub will
offer employment to each Employee set forth in Schedule 6.10(a) on an "at will"
basis on or prior to the date hereof, and the individuals who accept such offer
shall be referred to as the "Transferred Employees." Each such offer of
employment shall be at the salary or hourly wage rate no lower than as set forth
on Schedule 6.10(a). Subject to applicable Laws, Purchaser or Purchaser Sub, as
applicable, shall have the right to terminate any or all Transferred Employees
at any time, with or without cause, and to change the terms and conditions of
their employment (including compensation and employee benefits provided to
them). Each Transferred Employee concurrently with the execution and delivery of
this Agreement will deliver to Purchaser the Employee Documents applicable to
such Transferred Employee, executed by such Transferred Employee. Either
Purchaser or Purchaser Sub shall allow all Transferred Employees to make direct
rollovers of any funds held for such Transferred Employees' benefit in Seller's
401(k) plans to 401(k) plans administered by Purchaser or Purchaser Sub, and
Purchaser or Purchaser Sub will recognize such Transferred Employees' years of
service with Seller for purposes of vesting of any employer-matched
contributions to such plans. The Transferred Employees will be given credit for
their service at Seller for the purpose of Purchaser's or Purchaser Sub's
vacation policy, as applicable. Seller and not Purchaser shall be responsible
for providing COBRA continuation coverage to (i) those former employees of
Seller that as of the Closing are exercising their COBRA continuation coverage
rights and (ii) those persons that are employees of Seller as of the Closing
that are not Transferred Employees.

         8.7      FURTHER COOPERATION. In the event that an asset of Seller that
the parties did not intend to be transferred to Purchaser or Purchaser Sub was
transferred to Purchaser or Purchaser Sub in error, Purchaser and Purchaser Sub
agree to execute and deliver, or cause to be executed and delivered, all such
documents and instruments and take such other actions as may be reasonably
necessary to transfer all right, title and interest in such asset back to
Seller. In the event that an asset or Contract of Seller should have been
included as a part of the Transferred Assets transferred to Purchaser or
Purchaser Sub, Seller agrees to execute and deliver, or cause to be executed and
delivered, all such documents and instruments and take such other actions as may
be reasonably necessary to transfer all right, title and interest in such asset
or Contract to Purchaser or Purchaser Sub. In the event that a dispute arises
between Seller and Purchaser with respect to whether a particular asset should
or should not have been transferred to Purchaser or Purchaser Sub, the parties
agree to use their commercially reasonable efforts to resolve such dispute in a
timely and mutually acceptable manner.

                                       26
<PAGE>

         8.8      PUBLIC ANNOUNCEMENTS. Unless otherwise agreed by the parties,
the initial press release concerning the transactions contemplated hereby shall
be a press release approved by the parties to this Agreement; provided, however,
that the parties hereto may make such public disclosure regarding this Agreement
and the transactions contemplated hereby which each party in good faith
determines is necessary to comply with applicable Law or, the requirements of
the rules and regulations of the SEC, the Nasdaq National Market or Nasdaq Small
Cap Market in which case the parties shall use their best efforts to consult
with each other prior to issuing any such release or making any such public
disclosure.

         8.9      TECH CALL NETWORKS (TIER THREE) REFUND. In the event that the
deposit relating to that certain contract between Elron and Tech Call Networks
(Tier Three) is returned to Purchaser or Purchaser Sub, Purchaser or Purchaser
Sub shall promptly remit such amount to Elron. In addition, Purchaser and
Purchaser Sub will cooperate with Elron and take any reasonable actions as Elron
may request (each at the sole cost and expense of Elron) to assist Elron in
obtaining a full repayment of such deposit.

         8.10     ACKNOWLEDGMENTS. THE REPRESENTATIONS AND WARRANTIES BY EACH
PARTY HERETO CONSTITUTE THE SOLE AND EXCLUSIVE REPRESENTATIONS AND WARRANTIES OF
SUCH PARTY TO THE OTHER IN CONNECTION WITH THE TRANSACTIONS CONTEMPLATED HEREBY,
AND EACH PARTY UNDERSTANDS, ACKNOWLEDGES AND AGREES THAT ALL OTHER
REPRESENTATIONS AND WARRANTIES OF ANY KIND OR NATURE WHETHER EXPRESS, IMPLIED OR
STATUTORY (INCLUDING, BUT NOT LIMITED TO, ANY RELATING TO THE FUTURE OR
HISTORICAL FINANCIAL CONDITION OR RESULTS OF OPERATIONS) ARE SPECIFICALLY
DISCLAIMED.

                                    ARTICLE 9

                          SURVIVAL AND INDEMNIFICATION

         9.1      SURVIVAL OF REPRESENTATIONS, WARRANTIES AND COVENANTS.

                  (a)      Except for the representations and warranties of
Seller contained in Section 6.1, Section 6.2, Section 6.4(b) and Section 6.4(c)
and those of Purchaser and Purchaser Sub contained in Section 7.1, and Section
7.2, which shall survive the Closing and remain in effect indefinitely, and the
representations and warranties of Seller contained in Section 6.8(b), Section
6.11 and Section 6.12, which shall survive the Closing and remain in effect
until the third anniversary of the Closing, the representations and warranties
of Seller, Purchaser and Purchaser Sub contained in this Agreement shall survive
the Closing and remain in effect until the first anniversary of the Closing
Date. Any Claim notice given to the Indemnifying Party within such period of
survival as herein provided will be timely made for purposes hereof. No Claims
for an Indemnifiable Loss may be asserted following the expiration of such
applicable period.

                  (b)      Unless a specified period is set forth in this
Agreement (in which event such specified period will control), the covenants in
this Agreement will survive the Closing and remain in effect indefinitely or
until fully satisfied.

                                       27
<PAGE>

         9.2      DEFINITIONS; LIMITATIONS ON LIABILITY.

                  (a)      For purposes of this Agreement, (i) "Indemnity
Payment" means any amount of Indemnifiable Losses required to be paid pursuant
to this Agreement, (ii) "Indemnitee" means any Person entitled to
indemnification under this Agreement, (iii) "Indemnifying Party" means any
Person required to provide indemnification under this Agreement, (iv)
"Indemnifiable Losses" means any and all Losses suffered or incurred by an
Indemnitee and resulting or arising from any and all Claims brought against an
Indemnitee and (v) "Third Party Claim" means any Claim made or brought by any
Person other than a party to this Agreement (or an Affiliate thereof).

                  (b)      Notwithstanding any other provision hereof or of any
applicable Law, the maximum aggregate indemnification obligations of an
Indemnifying Party arising from breaches of (i) the representations and
warranties contained in Section 6.1, Section 6.2, Section 6.4(b), Section
6.4(c), the third sentence of Section 6.11(a), Section 6.11(b), Section 6.11(d),
Section 6.12(c) and Section 6.12(d) (collectively, "Tier One Breaches"); (ii)
the representations and warranties contained in Section 6.8(b), the remaining
portions of Section 6.11 and the remaining portions of Section 6.12
(collectively, "Tier Two Breaches"); and (iii) all other representations and
warranties in this Agreement (collectively, "Tier Three Breaches") and, in each
case asserted pursuant to Section 9.3(a)(i) or Section 9.3(b)(i), as applicable,
shall be limited to, and shall in no event exceed the following amounts: (A) in
respect of Tier One Breaches, the lesser of $6,000,000 or the aggregate fair
market value of the Shares on the date which they may first be sold to the
public pursuant to a registration under the Securities Act or an exemption
therefrom and free of any restrictions under this Agreement (but in no event
less than $1,000,000) (the "Tier One Maximum Amount"); (B) in respect of Tier
Two Breaches, the lesser of $4,000,000 or the aggregate fair market value of the
Shares on the date which they may first be sold to the public pursuant to a
registration under the Securities Act or an exemption therefrom and free of any
restrictions under this Agreement (but in no event less than $1,000,000); (C) in
respect of Tier Three Breaches, the lesser of $2,000,000 or the aggregate fair
market value of the Shares on the date which they may first be sold to the
public pursuant to a registration under the Securities Act or an exemption
therefrom and free of any restrictions under this Agreement (but in no event
less than $1,000,000) (in each case, as applicable, the "Indemnification Cap").
The amounts designated for each Indemnification Cap shall not be cumulative and,
notwithstanding their segregation, the maximum aggregate liability of an
Indemnifying Party hereunder shall not exceed the Tier One Maximum Amount.

                  (c)      An Indemnifying Party shall not be required to make
any Indemnification Payment for Claims made pursuant to Section 9.3(a)(i) or
Section 9.3(b)(i) until such time as the total amount of all Indemnifiable
Losses that have been suffered or incurred by the Indemnitee exceed $150,000 in
the aggregate with respect to Tier One Breaches, $100,000 in the aggregate with
respect to Tier Two Breaches and $50,000 in the aggregate with respect to Tier
Three Breaches (in each case, as applicable, the "Deductible"); provided,
however, that if the total amount of such Indemnifiable Losses exceeds the
applicable Deductible, the Indemnitee shall be entitled to be indemnified
against only the amount of such Indemnifiable Losses exceeding such Deductible.

                  (d)      In no event shall any Indemnifying Party be
responsible and liable for any Indemnifiable Losses or other amounts under this
Article 9 that are consequential, in the

                                       28
<PAGE>

nature of lost profits, damage to reputation or the like, special or punitive.
With respect to any Claim for an Indemnifiable Loss, an Indemnifying Party shall
be entitled to assert all equitable defenses regarding an Indemnitee's failure
to mitigate damages. The amount of any Losses for which indemnification is
provided under this Article 9 shall be reduced by any related recoveries
received by Indemnitee under insurance policies or other related payments
received from third parties.

         9.3      INDEMNIFICATION.

                  (a)      Subject to the other sections of this Article 9, from
and after the Closing Date, Parent and Seller agree, jointly and severally, to
indemnify, defend and hold harmless Purchaser and Purchaser Sub from and against
any and all Indemnifiable Losses relating to, resulting from or arising out of:

                           (i)      any breach of the representations and
                  warranties of Seller contained in Article 6 of this Agreement;

                           (ii)     any failure to perform any covenant on the
                  part of Parent or Seller under the terms of this Agreement;

                           (iii)    all Retained Liabilities;

                           (iv)     the use or ownership of any of the
                  Transferred Assets or the conduct of the Software Business
                  prior to or on the Closing Date (other than the Assumed
                  Liabilities);

                           (v)      any breach or default under the Assigned
                  Contracts that occurred prior to the Closing Date or that
                  occurs as a result of Seller's execution, delivery and
                  performance of this Agreement (other than with respect to
                  consents required under any Assigned Contract not listed on
                  Schedule 5.2(a)(iv)); and

                           (vi)     (x) any royalty, license, settlement or
                  similar payments for all periods prior to or on the Closing
                  Date arising from or relating to those certain matters as set
                  forth on items 1 and 2 of Schedule 6.11(g), (y) one-half of
                  any royalty, license, settlement or similar payments for all
                  periods after the Closing Date arising from or relating to
                  those certain matters as set forth on items 1 and 2 of
                  Schedule 6.11(g) and (z) one-half of all the fees and expenses
                  of attorneys, advisors and other professionals engaged by
                  Purchaser and Purchaser Sub after the Closing Date in
                  connection therewith (in the case of each of clause (x) and
                  (y) subject to the Tier One Maximum Amount); provided, that
                  the Parent's and Seller's one-half portion with respect to
                  clause (y) shall not exceed $250,000 in the aggregate;
                  provided, further, that the indemnification obligations of
                  Parent and Seller under this clause (vi) shall only apply to
                  Claims asserted within 18 months of the Closing Date, it being
                  understood that any Claim asserted after such 18-month period
                  shall not be subject to indemnification under this clause
                  (vi).

                  (b)      Subject to the other sections of this Article 9, from
and after the Closing Date, Purchaser and Purchaser Sub agree, jointly and
severally, to indemnify, defend and hold

                                       29
<PAGE>

harmless Seller and Parent from and against any and all Indemnifiable Losses
relating to, resulting from or arising out of:

                           (i)      any breach of the representations and
                  warranties of Purchaser or Purchaser Sub contained in Article
                  7 of this Agreement;

                           (ii)     any failure to perform any covenant on the
                  part of Purchaser or Purchaser Sub under the terms of this
                  Agreement;

                           (iii)    all Assumed Liabilities; and

                           (iv)     the use or ownership of any of the
                  Transferred Assets or the conduct of the Software Business
                  after the Closing Date.

         9.4      DEFENSE OF THIRD PARTY CLAIMS.

                  (a)      If any Indemnitee receives notice of assertion or
commencement of any Third Party Claim against such Indemnitee with respect to
which an Indemnifying Party is obligated to provide indemnification under this
Agreement, the Indemnitee will give such Indemnifying Party reasonably prompt
written notice thereof, but in any event not later than ten calendar days after
receipt of such notice of such Third Party Claim. Such notice will describe the
Third Party Claim in reasonable detail, will include copies of all material
written evidence thereof available after diligent search and attempt to locate
the same and will indicate the estimated amount, if reasonably practicable, of
the Indemnifiable Loss that has been or may be sustained by the Indemnitee. The
Indemnifying Party will have the right to participate in, or, by giving written
notice to the Indemnitee, to assume, the defense of any Third Party Claim at
such Indemnifying Party's own expense and by such Indemnifying Party's own
counsel (reasonably satisfactory to the Indemnitee), and the Indemnitee will
cooperate in good faith in such defense. If the Indemnifying Party has assumed
the defense of the Third Party Claim, the Indemnitee shall not enter into any
settlement of such claims, or admit any liability with respect to such claim
without the prior written consent of the Indemnifying Party. Notwithstanding
anything to the contrary in this Section 9.4(a), the parties agree that
Purchaser shall be entitled to assume the defense of any Third Party Claim
relating to the matters referred to in Section 9.3(a)(vi) subject to the
obligations of Purchaser and Purchaser Sub to pay one-half of the fees and
expenses as provided in Section 9.3(a)(vi).

                  (b)      If, within ten calendar days after giving notice of a
Third Party Claim to an Indemnifying Party pursuant to Section 9.4(a), an
Indemnitee receives written notice from the Indemnifying Party that the
Indemnifying Party has elected to assume the defense of such Third Party Claim
as provided in the last sentence of Section 9.4(a), the Indemnifying Party will
not be liable for any legal expenses subsequently incurred by the Indemnitee in
connection with the defense thereof; provided, however, that if the Indemnifying
Party fails to take reasonable steps necessary to defend diligently such Third
Party Claim within ten calendar days after receiving written notice from the
Indemnitee that the Indemnitee reasonably believes the Indemnifying Party has
failed to take such steps or if the Indemnifying Party has not undertaken fully
to indemnify the Indemnitee in respect of all Indemnifiable Losses relating to
the matter, the Indemnitee may assume its own defense, and the Indemnifying
Party will be liable for all reasonable costs and expenses paid or incurred in
connection therewith.

                                       30
<PAGE>

                  (c)      If the Indemnitee so assumes the defense of the Third
Party Claim or assumes, pursuant to Section 9.4(a) above, the defense of any
Third Party Claim relating to any matters referred to under Section 9.3(a)(vi),
the Indemnitee shall not enter into any settlement of such claim, or admit any
liability with respect to such claim, without the prior written consent of the
Indemnifying Party; provided, however, if the Indemnitee provides written notice
to the Indemnifying Party that it relinquishes any and all claims for
indemnification pursuant to this Article 9 in respect of such Third Party Claim,
the Indemnitee may freely enter into any settlement agreement without the prior
written consent of the Indemnifying Party. Without the prior written consent of
the Indemnitee, the Indemnifying Party will not enter into any settlement of any
Third Party Claim that would lead to liability or create any financial or other
obligation on the part of the Indemnitee for which the Indemnitee is not
entitled to indemnification hereunder.

                  (d)      A failure to give timely notice or to include any
specified information in any notice as provided in Section 9.4(a) or Section
9.4(b) will not affect the rights or obligations of any party hereunder except
and only to the extent that, as a result of such failure, any party that was
entitled to receive such notice was deprived of or prejudiced in its right to
recover any payment under its applicable insurance coverage or was otherwise
materially damaged as a result of such failure.

                  (e)      An Indemnitee wishing to assert a claim for
indemnification under this Article 9 which is not subject to Section 9.4(a)
shall deliver to the Indemnifying Party a written notice (a "Claim Notice")
which contains (i) a description and the amount (the "Claimed Amount") of any
Indemnifiable Losses incurred by the Indemnitee, (ii) a statement that the
Indemnitee is entitled to indemnification under this Article 9 and a reasonable
explanation of the basis therefor, and (iii) a demand for payment in the amount
of such Indemnifiable Losses. Within 30 days after delivery of a Claim Notice,
the Indemnifying Party shall deliver to the Indemnitee a written response in
which the Indemnifying Party shall: (I) agree that the Indemnitee is entitled to
receive all of the Claimed Amount (in which case such response shall be
accompanied by a payment by the Indemnifying Party to the Indemnitee of the
Claimed Amount, by check or by wire transfer), (II) agree that the Indemnitee is
entitled to receive part, but not all, of the Claimed Amount (the "Agreed
Amount") (in which case such response shall be accompanied by a payment by the
Indemnifying Party to the Indemnitee of the Agreed Amount, by check or by wire
transfer), and/or (III) contest that the Indemnitee is entitled to receive any
of the Claimed Amount. If the Indemnifying Party in such response contests the
payment of all or part of the Claimed Amount, the Indemnifying Party and the
Indemnitee shall use good faith efforts to resolve such dispute. If such dispute
is not resolved within 60 days following the delivery by the Indemnifying Party
of such response, the Indemnifying Party and the Indemnitee shall each have the
right to submit such dispute to a court of competent jurisdiction in accordance
with the provisions of Section 10.17.

         9.5      EXCLUSIVE REMEDY; ADJUSTMENT TO PURCHASE PRICE.

                  (a)      To the extent permitted by Law, the indemnity
provisions of this Article 9 shall be the sole and exclusive remedy of the
parties with respect to any breach of the representations, warranties and
covenants contained in this Agreement and the other indemnification obligations
set forth in Section 9.3 that are asserted subsequent to Closing,

                                       31
<PAGE>

provided, however, that the foregoing shall not prohibit any party from seeking
an injunction or other equitable remedy in respect thereof or limit any Claim
arising from fraudulent conduct.

                  (b)      Any payments by Seller to Purchaser or Purchaser Sub
pursuant to this Article 9 shall be treated as an adjustment to the purchase
price of the Transferred Assets.

                                   ARTICLE 10

                            MISCELLANEOUS PROVISIONS

         10.1     NOTICES. All notices and other communications required or
permitted hereunder will be in writing and, unless otherwise provided in this
Agreement, will be deemed to have been duly given when delivered in person or
when dispatched by electronic facsimile transfer (confirmed in writing by mail
simultaneously dispatched), three business days after having been sent by
registered or certified mail (return receipt requested) or one business day
after having been dispatched by a nationally recognized overnight courier
service each to the appropriate party at the address specified below:

                           If to Seller, to:

                           Elron Software, Inc.
                           c/o Elron Electronic Industries Ltd.
                           3 Azrieli Center, 42nd Floor
                           Tel Aviv, Israel 67023
                           Attention: Legal Department
                           Facsimile No.: (972) 3-607-5556

                           with a copy to:

                           Kramer Levin Naftalis & Frankel LLP
                           919 Third Avenue
                           New York, New York 10022-3852
                           Attention: Richard H. Gilden, Esq.
                           Facsimile No.: (212) 715-8000

                           If to Purchaser or Purchaser Sub, to:

                           Zix Corporation
                           2711 N. Haskell Avenue
                           Suite 2300, LB 36
                           Dallas, Texas 75204-2960
                           Attention: Legal Department
                           Facsimile No.: (214) 515-7385

or to such other address or addresses as any such party may from time to time
designate as to itself by like notice.

                                       32
<PAGE>

         10.2     EXPENSES. Except as otherwise expressly provided herein, each
party hereto will pay any expenses incurred by it incident to this Agreement and
in preparing to consummate and consummating the transactions provided for
herein.

         10.3     SUCCESSORS AND ASSIGNS. This Agreement will be binding upon
and inure to the benefit of the parties hereto and their respective successors
and permitted assigns, but will not be assignable or delegable by any party
without the prior written consent of the other party; provided, however, that
upon notice to the other party delivered in accordance with Section 10.1, either
party may assign or delegate any or all of their rights or obligations under
this Agreement to any Affiliate thereof or to any Person that directly or
indirectly acquires, after the Closing, all or substantially all of the assets
or voting stock of such party, but such assignment or delegation shall not
relieve the assigning party of any obligation hereunder.

         10.4     WAIVER. No failure on the part of any Person to exercise any
power, right, privilege or remedy under this Agreement, and no delay on the part
of any Person in exercising any power, right, privilege or remedy under this
Agreement, shall operate as a waiver of such power, right, privilege or remedy;
and no single or partial exercise of any such power, right, privilege or remedy
shall preclude any other or further exercise thereof or of any other power,
right, privilege or remedy. No Person shall be deemed to have waived any Claim
arising out of this Agreement, or any power, right, privilege or remedy under
this Agreement, unless the waiver of such Claim, power, right, privilege or
remedy is expressly set forth in a written instrument duly executed and
delivered on behalf of such Person; and any such waiver shall not be applicable
or have any effect except in the specific instance in which it is given.

         10.5     ENTIRE AGREEMENT. This Agreement and the Collateral
Agreements, which includes the Schedules and Exhibits hereto and thereto,
supersede any other agreement, whether written or oral, that may have been made
or entered into by any party relating to the matters contemplated hereby and
constitute the entire agreement by and among the parties hereto and thereto.

         10.6     AMENDMENTS, SUPPLEMENTS, ETC. This Agreement may be amended or
supplemented only by additional written agreements executed and delivered by
each of the parties hereto.

         10.7     RIGHTS OF THE PARTIES. Nothing expressed or implied in this
Agreement is intended or will be construed to confer upon or give any Person
other than the parties hereto any rights or remedies under or by reason of this
Agreement or any transaction contemplated hereby.

         10.8     FURTHER ASSURANCES. From time to time, as and when reasonably
requested by any party hereto, the other party will execute and deliver, or
cause to be executed and delivered, all such documents and instruments, make
such other deliveries and take such other actions as may be reasonably necessary
to consummate the transactions contemplated by this Agreement.

         10.9     APPLICABLE LAW. This Agreement and the legal relations among
the parties hereto will be governed by and construed in accordance with the
rules and substantive Laws of the State of New York, United States of America,
without regard to conflicts of law provisions thereof.

                                       33
<PAGE>

         10.10    EXECUTION IN COUNTERPARTS. This Agreement may be executed in
two or more counterparts, each of which will be deemed an original, but all of
which together will constitute one and the same agreement.

         10.11    TITLES AND HEADINGS. Titles and headings to Sections herein
are inserted for convenience of reference only, and are not intended to be a
part of or to affect the meaning or interpretation of this Agreement.

         10.12    INVALID PROVISIONS. If any provision of this Agreement is held
to be illegal, invalid or unenforceable under any present or future Law, and if
the rights or obligations under this Agreement of Seller and Parent, on the one
hand, and Purchaser and Purchaser Sub, on the other hand, will not be materially
and adversely affected thereby: (i) such provision will be fully severable; (ii)
this Agreement will be construed and enforced as if such illegal, invalid or
unenforceable provision had never comprised a part hereof; (iii) the remaining
provisions of this Agreement will remain in full force and effect and will not
be affected by the illegal, invalid or unenforceable provision or by its
severance from this Agreement; and (iv) in lieu of such illegal, invalid or
unenforceable provision, there will be added automatically as a part of this
Agreement a legal, valid and enforceable provision as similar in terms to such
illegal, invalid or unenforceable provision as may be possible.

         10.13    SPECIFIC PERFORMANCE. The parties recognize that if either
party refuses to perform under the provisions of this Agreement, monetary
damages alone will not be adequate to compensate the other party for its injury.
The non-breaching party shall therefore be entitled, in addition to any other
remedies that may be available, to obtain specific performance of the terms of
this Agreement. If any action is brought by the non-breaching to enforce this
Agreement, the breaching party shall waive the defense that there is an adequate
remedy at Law.

         10.14    TRANSFERS. Purchaser and Seller will cooperate and take such
action as may be reasonably requested by the other in order to effect an orderly
transfer of the Transferred Assets with a minimum of disruption to the
operations and employees of the businesses of Purchaser and Seller. For a period
of 60 days following the Closing Date, Purchaser will make its representatives
and premises reasonably accessible to Seller to assist with the transition
pursuant to the foregoing sentence and, as necessary, with the wind up
operations of Seller. Seller hereby agrees to execute any instruments or take
such other actions as is reasonably necessary, at Seller's sole cost and
expense, to fully vest Purchaser or Purchaser Sub with title to the Transferred
Assets as contemplated herein.

         10.15    TRANSFER TAXES. All Taxes imposed by any Governmental
Authority with respect to the transfer of the Transferred Assets or otherwise on
account of this Agreement or any Collateral Agreement or the transactions
contemplated hereby or thereby will be borne by Seller.

         10.16    ATTORNEYS' FEES. If any action at Law or in equity is
necessary to enforce or interpret the terms of this Agreement, the prevailing
party shall be entitled to recover in such action its reasonable attorneys'
fees, costs and necessary disbursements in addition to any other relief to which
it may be entitled.

         10.17    SUBMISSION TO JURISDICTION. Each of the parties agrees that
any dispute, controversy or Claim arising out of or relating to the transactions
contemplated by this

                                       34
<PAGE>

Agreement or any Collateral Agreement, or the validity, interpretation, breach
or termination of this Agreement or any Collateral Agreement, shall be resolved
only in the courts of the State of New York sitting in the County of New York or
the United States District Court for the Southern District of New York and the
appellate courts having jurisdiction of appeals in such courts. In that context,
and without limiting the generality of the foregoing, each of the parties
irrevocably and unconditionally: (i) submits for itself and its property in any
dispute, controversy or Claim relating to this Agreement or any Collateral
Agreement, or for recognition and enforcement of any judgment in respect
thereof, to the exclusive jurisdiction of the courts of the State of New York
sitting in the County of New York, the court of the United States of America for
the Southern District of New York and appellate courts having jurisdiction of
appeals from any of the foregoing, and agrees that all such disputes,
controversies or Claims shall be heard and determined in such New York State
court or, to the extent permitted by Law, in such federal court; (ii) consents
that any such dispute, controversy or Claim may and shall be brought in such
courts and waives any objection that it may now or thereafter have to the venue
or jurisdiction of any such dispute, controversy or Claim in any such court or
that such dispute, controversy or Claim was brought in an inconvenient court and
agrees not to plead or claim the same; (iii) waives all right to trial by jury
in any dispute, controversy or Claim (whether based on contract, tort or
otherwise) arising out of or relating to this Agreement or any Collateral
Agreement or its performance under or the enforcement of this Agreement or any
Collateral Agreement; (iv) agrees that service of process in any such dispute,
controversy or Claim may be effected by mailing a copy of such process by
registered or certified mail, postage prepaid, to such party at its address as
provided in Section 10.1; and (v) agrees that nothing in this Agreement or any
Collateral Agreement shall affect the right to effect service of process in any
other manner permitted by the Laws of the State of New York.

              [The Remainder of this Page Intentionally Left Blank]

                                       35
<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have executed this
Agreement as of the day and year first above written.

                                 ZIX CORPORATION

                                 By: /s/ RONALD A. WOPSSNER
                                     -------------------------------------------
                                 Name: Ronald A. Wopssner
                                       -----------------------------------------
                                 Title: SVP
                                        ----------------------------------------

                                 ZIX ACQUISITION CORPORATION

                                 By: /s/ RONALD A. WOPSSNER
                                     -------------------------------------------
                                 Name: Ronald A. Wopssner
                                       -----------------------------------------
                                 Title: V.P.
                                        ----------------------------------------

                                 ELRON ELECTRONIC INDUSTRIES LTD.

                                 By: /s/ DORAN BIRGER
                                     -------------------------------------------
                                 Name: Doran Birger
                                       -----------------------------------------
                                 Title: President & CEO
                                        ----------------------------------------

                                 By: /s/ PAUL WEINBERG
                                     -------------------------------------------
                                 Name: Paul Weinberg
                                       -----------------------------------------
                                 Title: General Counsel & Corp Secretary
                                        ----------------------------------------

                                 ELRON SOFTWARE, INC.

                                 By: /s/ ADAM N. BOSNIAN
                                     -------------------------------------------
                                 Name: Adam N. Bosnian
                                       -----------------------------------------
                                 Title: Co-General Manager
                                        ----------------------------------------

                                 By: /s/ HENRY R. TUMBLIN
                                     -------------------------------------------
                                 Name: Henry R. Tumblin
                                       -----------------------------------------
                                 Title: Co-General Manager
                                        ----------------------------------------

                                 ELRON SOFTWARE (2000) LTD.

                                 By: /s/ JOHN WILES
                                     -------------------------------------------
                                 Name: John Wiles
                                       -----------------------------------------
                                 Title: VP Finance
                                        ----------------------------------------

                                 By: /s/ RINAT REULER
                                     -------------------------------------------
                                 Name: Rinat Reuler
                                       -----------------------------------------
                                 Title: Director
                                        ----------------------------------------
<PAGE>

                                    EXHIBIT A

                            FORM OF CONVERTIBLE NOTE

<PAGE>

                                    EXHIBIT B

                      FORM OF REGISTRATION RIGHTS AGREEMENT

<PAGE>

                                    EXHIBIT C

          FORM OF BILL OF SALE AND ASSIGNMENT AND ASSUMPTION AGREEMENT

<PAGE>

                                    EXHIBIT D

                       FORM OF TRADEMARK LICENSE AGREEMENT

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