Document:

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                                                                   EXHIBIT 10.31

                                                    COMPOSITE COPY INCLUDING THE
                                                        FIRST, SECOND, THIRD AND
                                        FOURTH AMENDMENTS, EFFECTIVE MAY 1, 1999

                              HARBINGER CORPORATION

                             1996 STOCK OPTION PLAN

                                   SECTION 1.
                                     PURPOSE

         The purpose of this stock option plan is to (i) promote the interests
of the Company and its stockholders by attracting and retaining the services of
experienced and knowledgeable Directors, Key Employees and Consultants who have
rendered valuable services to the Company, (ii) provide additional incentives to
Key Employees to increase the value of the Company's Shares, and (iii) provide
the Key Employees, Consultants and Directors with a stake in the future of the
Company which corresponds to the stake of each of the Company's shareholders.

                                   SECTION 2.
                                   DEFINITIONS

         Each term set forth in this Section 2 shall have the meaning set forth
opposite such term for purposes of this Plan and, for purposes of such
definitions, the singular shall include the plural and the plural shall include
the singular, and reference to one gender shall include the other gender.

         2.1      BOARD means the Board of Directors of the Company.

         2.2      CODE means the Internal Revenue Code of 1986, as amended.

         2.3      COMMITTEE means the committee of the Board appointed
pursuant to Section 5.

         2.4      COMMON STOCK means the common stock, $.0001 par value per
share, of the Company, and shall also mean any other stock or securities
(including any other share or securities of an entity other than the Company)
for or into which the outstanding shares of such stock are hereafter
exchanged or changed.

         2.5      COMPANY means Harbinger Corporation, a Georgia corporation,
and any successor to such organization.

         2.6      CONSULTANT means a consultant of the Company who has
rendered valuable service to the Company and who is not a Key Employee.

         2.7      DIRECTOR means a Member of the Board, or a Member of the
Board of Directors of a Parent or Subsidiary, who is not a Key Employee.

         2.8      EXERCISE PRICE means the price which, under the terms of an
Option Agreement, is required to be paid to purchase one (1) Share upon the
exercise of an Option granted under this Plan.

         2.9      EXCHANGE ACT means the Securities Exchange Act of 1934, as
amended.

         2.10     FAIR MARKET VALUE of each Share on any date shall mean the
price determined below on the last business day immediately preceding the
date of valuation:

                  (a)      The closing sales price per Share, regular way, or
in the absence thereof, the mean of the last reported bid and asked
quotations, on such date on the exchange having the greatest volume of
trading in the Shares during the thirty-day period preceding such date (or,
if such exchange was not open for trading on such date, the next preceding
date on which it was open); or

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                  (b)      If there is no price as specified in (a), the
final reported sales price per Share, or if not reported, the mean of the
closing high bid and low asked prices, in the over-the-counter market for the
Shares as reported by the National Association of Securities Dealers
Automatic Quotation System, or if not so reported, then as reported by the
National Quotation Bureau Incorporated, or if such organization is not in
existence, by an organization providing similar services, on such date (or,
if such date is not a date for which such system or organization generally
provides reports, then on the next preceding date for which it does so); or

                  (c)      If there also is no price as specified in (b), the
price per Share determined by the Committee by reference to bid-and-asked
quotations for the Shares provided by members of an association of brokers
and dealers registered pursuant to Subsection 15(b) of the Exchange Act,
which members make a market in the Shares, for such recent dates as the
Committee shall determine to be appropriate for fairly determining current
market value; or

                  (d)      If there also is no price as specified in (c), an
amount per Share determined in good faith by the Committee based on such
relevant facts, which may include opinions of independent experts, as may be
available to the Committee.

         2.11      ISO means an option granted under this Plan to purchase
Shares which is intended by the Company to satisfy the requirements of Code
Section 422 as an incentive stock option.

         2.12      KEY EMPLOYEE means any person, including officers and
directors, in the regular employment of the Company, or a Subsidiary or a
Parent, who is designated a Key Employee by the Committee and is, or is
expected to be, primarily responsible for the management, growth, or
supervision of some part or all of the business of the Company, a Subsidiary
or a Parent. The power to determine who is a Key Employee is reserved solely
for the Committee.

         2.13      NQSO means an option granted under this Plan to purchase
Shares which is not intended by the Company to be an incentive stock option
satisfying the requirements of Code Section 422.

         2.14      OPTION means an ISO or a NQSO.

         2.15      OPTION AGREEMENT means the written agreement or instrument
which sets forth the terms of an Option granted to a Consultant, Director or
Key Employee under this Plan.

         2.16      OPTIONEE means the grantee of an Option.

         2.17      PARENT means any corporation (other than the Company),
partnership or other entity in an unbroken chain of corporations,
partnerships or other entities ending with the Company if, at the relevant
time, each of the corporations (other than the Company), partnerships or
other entities owns stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other
corporations, partnership or other entities in such chain.

         2.18      PLAN means the Harbinger Corporation 1996 Stock Option
Plan, as amended from time to time.

         2.19      PRIOR PLAN means the Harbinger Corporation Amended and
Restated 1989 Stock Option Plan.

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         2.20      PRIOR PLAN SHARES means the number of Shares reserved
under the Prior Plan for issuance upon the exercise of options granted under
the Prior Plan, minus (a) the number of Shares actually issued upon exercise
of such options, and (b) the number of Shares subject to outstanding options
granted under the Prior Plan. The number of Prior Plan Shares shall be
increased by the number of Shares subject to options granted under the Prior
Plan which terminate, expire or are canceled. Notwithstanding the above, the
number of Prior Plan Shares shall not exceed 995,206.

         2.21      SHARE means one (1) share of Common Stock.

         2.22      STOCK APPRECIATION RIGHT means a stock appreciation right
as described in Section 9.

         2.23      SUBSIDIARY means any corporation (other than the Company),
partnership or other entity in an unbroken chain of corporations,
partnerships or other entities beginning with the Company if, at the relevant
time, each of the corporations, partnerships or other entities, other than
the last corporation in the unbroken chain, owns stock possessing fifty
percent (50%) or more of the total combined voting power of all classes of
stock in one of the other corporations, partnerships or other entities in
such chain. The term "Subsidiary" shall include Harbinger NET Services, LLC
for all purposes under this Plan.

         2.24      SURRENDERED SHARES means the Shares described in Section 8
which (in lieu of being purchased) are surrendered for cash or Shares, or for
a combination of cash and Shares, in accordance with Section 8.

         2.25      TEN PERCENT SHAREHOLDER means a person who owns (after
taking into account the attribution rules of Code Section 424(d)) more than
ten percent (10%) of the total combined voting power of all classes of shares
of either the Company, a Subsidiary or a Parent.

                                   SECTION 3.
                            SHARES SUBJECT TO OPTIONS

         3.1      SHARES RESERVED FOR ISSUANCE. Subject to any antidilution
adjustment pursuant to Section 3.2, the maximum number of Shares that may be
subject to Options granted hereunder shall not exceed 8,737,000, plus the
number of Prior Plan Shares; provided, however, the maximum number of shares
with respect to which Options may be granted to any individual grantee in any
calendar year shall be 1,000,000. Shares issued pursuant to the exercise of
an Option may be either authorized and unissued Shares or Shares issued and
subsequently acquired by the Company. The Shares covered by any unexercised
portion of an Option that has terminated for any reason (except as may be
adjusted under Section 3.2 below) may again be optioned or awarded under the
Plan, and such Shares shall not be considered as having been optioned or
issued in computing the number of Shares remaining available to be subject to
Options granted hereunder.

         3.2      ANTIDILUTION.

                  (a)      In the event that the outstanding Shares are
changed into or exchanged for a different number or kind or shares or other
securities of the Company by reason of merger, consolidation, reorganization,
recapitalization, reclassification, combination or exchange of shares, stock
split or stock dividend, or in the event that any spin-off, spin-out or other
distribution of assets materially affects the price of the Company's stock:

                          (i)       The aggregate number and kind of Shares for
which Options may be granted hereunder shall be adjusted proportionately by the
Committee;

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                          (ii)      The number of Shares subject to each
outstanding Option, and the Exercise Price of each such outstanding Option,
shall be adjusted proportionately by the Committee; and

                          (iii)     The number and kind of Stock Appreciation
Rights shall be adjusted as the Committee deems appropriate in the
circumstances.

                  (b)      If the Company shall be a party to any
reorganization in which it does not survive, involving a merger,
consolidation, or acquisition of the stock or substantially all of the assets
of the Company, the Committee, in its discretion, may:

                           (i)      Notwithstanding other provisions hereof,
declare that all Options and Stock Appreciation Rights granted under the Plan
shall become exercisable immediately notwithstanding the provisions of the
respective Option Agreements or Stock Appreciation Rights agreements
regarding exercisability, and that all such Options shall terminate a
specified period of time after the Committee gives written notice of the
immediate right to exercise all such Options and of the decision to terminate
all Options not exercised within such period; and/or

                           (ii)     Notify all Grantees that all Options and
Stock Appreciation Rights granted under the Plan shall be assumed by the
successor corporation or substituted on an equitable basis with options or
restricted stock issued by the successor corporation.

                  (c)      If the Company is to be liquidated or dissolved in
connection with a reorganization described in Section 3.2(b), the provisions
of such Section shall apply. In all other instances, the adoption of a plan
of dissolution or liquidation of the Company shall, notwithstanding any other
provisions hereof, cause all then remaining unvested Shares subject to
Options and all remaining Stock Appreciation Rights under the Plan to vest,
and shall cause every outstanding Option and Stock Appreciation Right under
the Plan to terminate to the extent not exercised prior to the adoption of
the plan of dissolution or liquidation by the stockholders, provided that,
notwithstanding other provisions hereof, the Committee may declare all
Options granted under the Plan to be exercisable at any time on or before the
fifth business day following such adoption, notwithstanding the provisions of
the respective Option Agreements or Stock Appreciation Rights agreements
regarding exercisability.

                  (d)      The adjustments described in Subsections (a)
through (c) of this Section 3.2, and the manner of their application, shall
be determined solely by the Committee, and any such adjustment may provide
for the elimination or redemption of fractional share interests. The
adjustments required under this Section 3 shall apply to any successors of
the Company and shall be made regardless of the number or type of successive
events requiring such adjustments.

                                   SECTION 4.
                       EFFECTIVE DATE AND DURATION OF PLAN

         The effective date of this Plan shall be the date it is adopted by the
Board, provided the shareholders of the Company approve this Plan within twelve
(12) months after such effective date. If such effective date comes before such
shareholder approval, any Options granted under this Plan before the date of
such approval shall automatically be granted subject to such approval. The Plan
shall continue in effect until it is terminated by action of the Board or the
Company's shareholders, but such termination shall not affect the terms of any
outstanding Options.

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                                   SECTION 5.
                                   COMMITTEE

         This Plan shall be administered by the Committee, which shall consist
of three (3) or more directors appointed by the Board, each of whom is an
"outside director" within the meaning of Section 162(m) of the Code and is not
while a member of the Committee, or was not during the one (1) year prior to
serving as a member of the Committee, eligible to receive equity securities of
the Company, or any affiliate of the Company, pursuant to this Plan, the Prior
Plan, or any other plan of the Company or any affiliate of the Company, except
as may be permitted under Section 16(b)(3) of the Exchange Act. The Committee
acting in its absolute discretion shall exercise such powers and take such
action as expressly called for under this Plan and, further, the Committee shall
have the power to interpret this Plan and (subject to Section 11) to take such
other action in the administration and operation of this Plan as the Committee
deems equitable under the circumstances, which action shall be binding on the
Company, on each affected Consultant, Director or Key Employee and on each other
person directly or indirectly affected by such action. Notwithstanding anything
else to the contrary herein, the Board shall have the authority to assume the
powers and responsibilities outlined above with respect to the Committee, in
whole or in part.

                                   SECTION 6.
                                   ELIGIBILITY

         Except as provided below, only Consultants, Directors and Key
Employees shall be eligible for the grant of Options under this Plan, but no
Consultant, Director or Key Employee shall have the right to be granted an
Option under this Plan merely as a result of his or her status as a
Consultant, Director or Key Employee. Key Employees shall be eligible for the
grant of ISO's under this Plan. Consultants and Directors shall not be
eligible for the grant of ISO's under this Plan.

                                   SECTION 7.
                         TERMS AND CONDITIONS OF OPTIONS

         7.1      GRANTS OF OPTIONS.

                  (a)      AWARDS. In accord with the procedure established
by the Board, the Committee in its absolute discretion shall grant Options
under this Plan from time to time to purchase Shares and, further, shall have
the right to grant new Options in exchange for outstanding Options. Such
Options shall be granted to Consultants, Directors or Key Employees selected
by the Committee acting in its discretion as set forth above, and the
Committee shall not be under any obligation whatsoever to grant Options to
all Consultants, Directors or Key Employees or to grant all Options subject
to the same terms and conditions. Each grant of an Option shall be evidenced
by an Option Agreement, and each Option Agreement shall:

                           (i)      specify whether the Option is an ISO or
NQSO; and

                           (ii)     incorporate such other terms and conditions
as the Committee acting in its absolute discretion deems consistent with the
terms of this Plan, including (without limitation) a restriction on the number
of Shares subject to the Option which first become exercisable or subject to
surrender during any calendar year.

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                  (b)      SELECTION OF GRANTEES. In determining the
Consultants, Directors or Key Employees to whom Options shall be granted and
the number of Shares to be covered by such Options, the Committee may take
into account the recommendations of the President of the Company and its
other officers, the duties of the Consultants, Directors or Key Employees,
the present and potential contributions of the Consultants, Directors or Key
Employees to the success of the Company, the anticipated number of years of
service remaining before the attainment by the Key Employees of retirement
age, and other factors deemed relevant by the Committee, in its sole
discretion, in connection with accomplishing the purpose of this Plan. A
Consultant, Director or Key Employee who has been granted an Option to
purchase Shares of the Company, whether under this Plan or otherwise, may be
granted one (1) or more additional Options.

                  (c)      DUAL GRANTS. If the Committee grants an ISO and a
NQSO to a Key Employee on the same date, the right of the Key Employee to
exercise or surrender one such Option shall not be conditioned on his or her
failure to exercise or surrender the other such Option.

         7.2      EXERCISE PRICE.

                  (a)      ISO. If an Option is an ISO, the Exercise Price
for each Share subject to such Option shall be no less than the Fair Market
Value of a Share on the date such Option is granted or, if such Option is
granted to a Ten Percent Shareholder, the Exercise Price for each Share
subject to such Option shall be no less than one hundred ten percent (110%)
of the Fair Market Value of a Share on the date such Option is granted.

                  (b)      NQSO. If an Option is a NQSO, the Exercise Price
for each Share shall be no less than the minimum price required by applicable
state law or by the Company's governing instrument, or $0.01, whichever price
is greater.

         7.3      VESTING OF OPTIONS. Each Option granted under the Plan
shall be exercisable at such time or times, or upon the occurrence of such
event or events, and in such amounts, as the Committee shall specify in the
Option Agreement; provided, however, that subsequent to the grant of an
Option, the Committee may, at any time before complete termination of such
Option, accelerate the time or times at which such Option may be exercised in
whole or in part.

         7.4      TERM OF OPTION. Each Option granted under this Plan shall
be exercisable in whole or in part at such time or times as set forth in the
related Option Agreement, but no Option Agreement shall:

                  (a)      make an Option exercisable before the date such
                           Option is granted or;

                  (b)      make an Option exercisable after the earlier of the:

                           (i)      the date such Option is exercised in full,
or

                          (ii)      the date which is the tenth (10th)
anniversary of the date such Option is granted, if such Option is a NQSO or
an ISO granted to a non-Ten Percent Shareholder, or the date which is the
fifth (5th) anniversary of the date such Option is granted, if such Option is
an ISO granted to a Ten Percent Shareholder. An Option Agreement may provide
for the exercise of an Option after the employment of a Key Employee has
terminated for any reason whatsoever, including death or disability.

         7.5      TIME AND MANNER OF OPTION EXERCISE. Any vested and
exercisable Option is exercisable in whole or in part (in whole Shares and in
lots of not less than one hundred (100) Shares) at any time or from time to
time prior to the expiration of an Option by giving written notice, signed by
the person exercising the Option, to the Company stating the number of Shares
with respect to which the Option is being exercised, accompanied by payment
in full of the Exercise Price for the number of Shares to be purchased. The
date upon which the Company's Secretary or Treasurer shall have received both
such notice and payment shall be the date of exercise of the Option as to the
number of Shares described by the Optionee. No Option may be exercised at any
time with respect to a fractional share. Any Option of a deceased Optionee
may be exercised, to the extent vested on such Optionee's death, by the
estate of such Optionee or by a person or persons whom the Optionee has
designated in writing filed with the Company, or, if no such designation has
been made, by the person or persons to whom the Optionee's rights have passed
by will or the laws of descent and distribution.

<PAGE>

         7.6      PAYMENT OF OPTION PRICE. Payment for all Shares purchased
pursuant to the exercise of an Option shall be made in cash or, if the Option
Agreement provides, by delivery to the Company of a number of Shares which
have been owned by the Optionee for at least six (6) months prior to the date
of exercise having an aggregate Fair Market Value on the date of delivery of
not less than the product of the Option Price multiplied by the number of
Shares the Optionee intends to purchase upon exercise of the Option. In
addition, the Option Agreement may provide for cashless exercise through a
brokerage transaction following registration of the Company's equity
securities under Section 12 of the Securities Exchange Act of 1934. Further,
in the sole discretion of the Board, an Option may be exercised as to a
portion or all (as determined by the Board) of the number of Shares specified
in the Option Agreement by delivery to the Company of a promissory note. Such
promissory note shall be executed by the Optionee and shall include, with
such other terms and conditions as the Board shall approve, provisions in a
form approved by the Board under which: (a) the balance of the aggregate
purchase price shall be payable in equal installments over such period as the
Board shall approve, and shall bear interest at a per annum rate equal to the
prime rate as announced from time to time by the Company's principal bank or,
if the Company has no principal bank, that rate announced by the Wall Street
Journal as the prevailing "prime rate" of interest per annum, and (b) the
Optionee shall be personally liable for payment of the unpaid principal
balance and all accrued but unpaid interest. Except as otherwise provided
herein, payment shall be made at the time that the Option or any part thereof
is exercised, and no Shares shall be issued or delivered upon exercise of an
Option until full payment has been made by the Optionee. No Optionee, as
such, shall have any of the rights of a shareholder.

         7.7      TRANSFERABILITY. The right of any Optionee to exercise an
Option granted under the Plan shall, during the lifetime of such Optionee, be
exercisable only by such Optionee or by a person who obtained such Option
pursuant to a qualified domestic relations order as defined by the Code, or
Title I of the Employee Retirement Income Security Act of 1974, as amended
("ERISA") or the rules thereunder (a "QDRO") and shall not be assignable or
transferable by such Optionee other than by will or by the laws of descent
and distribution or by a QDRO unless otherwise determined by the Committee.

         7.8      LIMITATION OF RIGHTS.

                  (a)      LIMITATION AS TO SHARES. Neither the recipient of
an Option under the Plan nor an Optionee's successor or successors in
interest shall have any rights as a stockholder of the Company with respect
to any Shares subject to an Option granted to such person until the date of
issuance of a stock certificate for such Shares.

                  (b)      LIMITATION AS TO EMPLOYMENT. Neither the Plan, nor
the granting of an Option, nor any other action taken pursuant to the Plan
shall constitute or be evidence of any agreement or understanding, express or
implied, that a Consultant, Director or Key Employee has a right to continue
as an employee of the Company or in the relationship of a consultant or
director with the Company, respectively, for any period of time or at any
particular rate of compensation.

                  (c)      REGULATORY APPROVAL AND COMPLIANCE. The Company
shall not be required to issue any certificate or certificates for Shares
upon the exercise of an Option granted under the Plan or to record as a
holder of record of Shares the name of the individual exercising an Option
under the Plan, without obtaining to the complete satisfaction of the Board
the approval of all regulatory bodies deemed necessary by the Board and
without complying, to the Board's complete satisfaction, with all rules and
regulations under federal, state, or local law deemed applicable by the
Board. In addition, with respect to persons subject to Section 16 of the
Exchange Act, transactions under this Plan are intended to comply with all
applicable conditions of Rule 16b-3 or its successors under the Exchange Act.
To the extent any provision of the Plan or action by the Committee fail to
comply, it shall deemed null and void, to the extent permitted by law and
deemed advisable by the Committee.

<PAGE>

                                   SECTION 8.
                              SURRENDER OF OPTIONS

         8.1      GENERAL RULE. The Committee acting in its absolute
discretion may incorporate a provision in an Option Agreement to allow an
Optionee to surrender his or her Option in whole or in part in lieu of the
exercise in whole or in part of that Option on any date that:

                  (a)      the Fair Market Value of the Shares subject to
such Option exceeds the Exercise Price for such Shares, and

                  (b)      the Option to purchase such Shares is otherwise
exercisable.

         8.2      PROCEDURE. The surrender of an Option in whole or in part
shall be effected by the delivery of the Option Agreement to the Committee
(or to its delegate) together with a statement signed by the Optionee which
specifies the number of Shares ("Surrendered Shares") as to which the
Optionee surrenders his or her Option and how he or she desires payment be
made for such Surrendered Shares.

         8.3      PAYMENT. An Optionee in exchange for his or her Surrendered
Shares shall receive a payment in cash or in Shares, or in a combination of
cash and Shares, equal in amount on the date such surrender is effected to
the excess of the Fair Market Value of the Surrendered Shares on such date
over the Exercise Price for the Surrendered Shares. The Committee acting in
its absolute discretion can approve or disapprove an Optionee's request for
payment in whole or in part in cash and can make that payment in cash or in
such combination of cash and Shares as the Committee deems appropriate. A
request for payment only in Shares shall be approved and made in Shares to
the extent payment can be made in whole shares of Shares and (at the
Committee's discretion) in cash in lieu of any fractional Shares.

         8.4      RESTRICTIONS. Any Option Agreement which incorporates a
provision to allow an Optionee to surrender his or her Option in whole or in
part also shall incorporate such additional restrictions on the exercise or
surrender of such Option as the Committee deems necessary to satisfy the
conditions to the exemption under Rule 16b-3 (or any successor exemption) to
Section 16(b) of the Exchange Act.

                                   SECTION 9.
                            STOCK APPRECIATION RIGHTS

         9.1      TERMS AND CONDITIONS OF STOCK APPRECIATION RIGHTS. Stock
Appreciation Rights may be, but are not required to be, granted by the
Committee in connection with grant of an Option. All Stock Appreciation
Rights shall be in such form as the Committee may from time to time determine
and shall be subject to the following terms and conditions:

                  (a)      TERM AND EXERCISE. A Stock Appreciation Right
shall be exercisable only: (i) with the approval of the Committee, (ii)
during the Term of the Option to which it relates, (iii) at such times as the
Option to which it relates is exercisable, and (iv) if the Fair Market Value
of the Shares subject to the Option surrendered (on the date surrendered)
minus the aggregate Option Price of the Shares subject to the Option
surrendered is a positive amount.

<PAGE>

                  (b)      PAYMENT. In the event the Committee agrees to
permit exercise of the Stock Appreciation Rights, the Optionee shall
surrender to the Company the right to exercise the Option with respect to a
specified number of Shares as to which the Option is then exercisable. In
return, the Optionee shall receive from the Company no more than an amount
payable in cash and/or in Shares (as determined by the Committee after
considering the request of the Optionee) equal to the difference between the
aggregate Fair Market Value of the Shares as to which the Optionee has
surrendered the Option and the Option Price with respect thereto. In the
event the Committee determines to tender Shares in full or partial payment of
the Stock Appreciation Right, the number of Shares to be issued to the
Optionee shall be based on the Fair Market Value of the Shares as of the date
of exercise of the Stock Appreciation Right. No fractional Shares shall be
issued to Optionees upon exercise of a Stock Appreciation Right. Instead, the
Company shall pay the Optionee the value of such fractional Share based upon
the Fair Market Value of a Share on the date the Stock Appreciation Right is
exercised.

                  (c)      NONTRANSFERABILITY. A Stock Appreciation Right
granted under the Plan shall be transferable only when the Option to which it
relates is transferable.

         9.2      OTHER TERMS AND CONDITIONS. Option Agreements reflecting
Stock Appreciation Rights which are granted under the Plan may contain such
other terms and as are conditions not inconsistent with the provisions of the
Plan as the Committee may deem appropriate from time to time.

         9.3      NOTIFICATION OF REQUEST TO EXERCISE.

                  (a)      The Optionee shall request the Committee's
approval to exercise a Stock Appreciation Right by written notice to the
Secretary of the Company at the principal executive offices of the Company.
Such written notice shall state the number of Shares subject to the Option
for which approval of the exercise of the Stock Appreciation Right is
requested and the Optionee's preferred form of payment of the Stock
Appreciation Right, as hereinafter provided. The Optionee may indicate his or
her preference to receive payment of the Stock Appreciation Right in cash or
in a combination thereof. Notwithstanding anything to the contrary contained
herein, the Committee shall have absolute discretion in determining whether
the request for approval of the exercise of the Stock Appreciation Right
shall be approved and, if such approval is given, whether payment shall be
made in cash or in a combination thereof.

                  (b)      Within thirty (30) days after the delivery to the
Secretary of the Optionee's request to exercise the Stock Appreciation Right
as provided above, the Committee shall inform the Optionee in writing of its
determination to the Optionee. The Optionee must act on any approved exercise
of a Stock Appreciation Right within thirty (30) days after the date of such
determination by the Committee (or such longer period as may be permitted by
the Committee) and in accordance with the terms approved by the Committee.
Exercise shall be by written notice actually delivered, or mailed by
certified or registered mail, return receipt requested, to the Secretary of
the Company at the principal executive office of the Company.

         9.4      EFFECT OF EXERCISE. Upon exercise of a Stock Appreciation
Right, the Option to which it relates shall lapse with respect to the Shares
as to which the Stock Appreciation Right is exercised and such Shares shall
not be available for further grant of Options.

<PAGE>

                                   SECTION 10.
                             SECURITIES REGISTRATION

         Each Option Agreement may provide that, upon the receipt of Shares as a
result of the surrender or exercise of an Option, the Consultant, Director or
Key Employee shall, if so requested by the Company, hold such Shares for
investment and not with a view of resale or distribution to the public and, if
so requested by the Company, shall deliver to the Company a written statement
satisfactory to the Company to that effect. Each Option Agreement also may
provide that, if so requested by the Company, the Consultant, Director or Key
Employee shall make a written representation to the Company that he or she will
not sell or offer to sell any of such Shares unless a registration statement
shall be in effect with respect to such Shares under the Securities Act of 1933,
as amended ("1933 Act") and any applicable state securities law or unless he or
she shall have furnished to the Company an opinion, in form and substance
satisfactory to the Company, of legal counsel acceptable to the Company, that
such registration is not required. Certificates representing the Shares
transferred upon the exercise or surrender of an Option granted under this Plan
may at the discretion of the Company bear a legend to the effect that such
Shares have not been registered under the 1933 Act or any applicable state
securities law and that such Shares may not be sold or offered for sale in the
absence of an effective registration statement as to such Shares under the 1933
Act and any applicable state securities law or an opinion, in form and substance
satisfactory to the Company, of legal counsel acceptable to the Company, that
such registration is not required.

                                   SECTION 11.
                          SALE OR MERGER OF THE COMPANY

         If the Company agrees to sell substantially all of its assets for cash
or property or for a combination of cash and property or agrees to any merger,
consolidation, reorganization, division or other transaction in which Shares are
converted into another security or into the right to receive securities or
property and such agreement does not provide for the assumption or substitution
of the Options granted under this Plan, each Option at the direction and
discretion of the Board, or as is otherwise provided in the Option Agreements,
may be cancelled unilaterally by the Company in exchange for the whole Shares
(or, subject to satisfying the conditions to the exemption under Rule 16b-3 or
any successor exemption to Section 16(b) of the Exchange Act, for the whole
Shares and the cash in lieu of a fractional Share) which each Optionee otherwise
would receive if he or she had the right to surrender his or her outstanding
Option in full under Section 11 of this Plan and he or she exercised that right
exclusively for Shares on a date fixed by the Board which comes before such sale
or other corporate transaction.

                                   SECTION 12.
                        TERMINATION AND AMENDMENT OF PLAN

         The Board may amend, terminate or suspend the Plan at any time, in its
sole and absolute discretion; provided, however, that if required to qualify the
Plan under Rule 16b-3 promulgated under Section 16 of the Exchange Act, no
amendment shall be made more than once every six months that would change the
amount, price or timing of the Annual Grants and Interim Grants, other than to
comport with changes in the Code, or the rules and regulations promulgated
thereunder; and provided, further, that if required to qualify the Plan under
Rule 16b-3, no amendment shall be made without the approval of the Company's
stockholders that would (a) materially increase the number of Shares that may be
issued under the Plan; (b) materially modify the requirements as to eligibility
for participation in the Plan; or (c) otherwise materially increase the benefits
accruing to participants under the Plan.

<PAGE>

                                   SECTION 13.
                        AMENDMENT OR TERMINATION OF PLAN

         This Plan may be amended by the Board from time to time to the extent
that the Board deems necessary or appropriate; provided, however, no such
amendment shall be made absent the approval of the shareholders of the Company
(1) to increase the number of Shares reserved under Section 3 except as set
forth in Section 3.2, (2) to extend the maximum life of the Plan or the maximum
exercise period under Section 7.4, (3) to decrease the minimum Exercise Price
under Section 7.2, or (4) to change the designation of Consultants, Directors or
Key Employees eligible for Options under Section 7.1. The Board also may suspend
the granting of Options under this Plan at any time and may terminate this Plan
at any time; provided, however, the Company shall not have the right to modify,
amend or cancel any Option granted before such suspension or termination unless
(1) the Optionee consents in writing to such modification, amendment or
cancellation or (2) there is a dissolution or liquidation of the Company or a
transaction described in Section 3.2 or Section 11 of this Plan.

                                   SECTION 14.
                                  MISCELLANEOUS

         14.1      SHAREHOLDER RIGHTS. No Consultant, Director or Key
Employee shall have any rights as a shareholder of the Company as a result of
the grant of an Option to him or to her under this Plan or his or her
exercise or surrender of such Option pending the actual delivery of Shares
subject to such Option to such Consultant, Director or Key Employee.

         14.2      NO CONTRACT OF EMPLOYMENT. The grant of an Option to a Key
Employee under this Plan shall not constitute a contract of employment and
shall not confer on a Key Employee any rights upon his or her termination of
employment in addition to those rights, if any, expressly set forth in the
Option Agreement which evidences his or her Option.

         14.3      WITHHOLDING. The exercise or surrender of any Option
granted under this Plan shall constitute the Optionee's full and complete
consent to whatever action the Committee directs to satisfy the federal and
state tax withholding requirements, if any, which the Committee in its
discretion deems applicable to such exercise or surrender. In addition to and
at the time of payment of the Exercise Price, the Optionee shall pay to the
Company in cash the full amount of any federal, state and local income,
employment or other taxes required to be withheld from the income of such
Optionee as a result of such exercise; provided, however, that in the
discretion of the Committee any Option Agreement may provide that all or any
portion of such tax obligations, together with additional taxes not exceeding
the actual additional taxes to be owed by the Optionee as a result of such
exercise, may, upon the irrevocable election of the Optionee, be paid by
tendering to the Company whole Shares of Common Stock duly endorsed for
transfer and owned by the Optionee, or by authorizing the Company to withhold
Shares of Common Stock otherwise issuable upon exercise of the Option, in
either case in that number of Shares having a Fair Market Value on the date
of exercise equal to the amount of such taxes thereby being paid, in all
cases subject to such restrictions as the Committee may from time to time
determine, including any such restrictions as may be necessary or appropriate
to satisfy the conditions of the exemption set forth in Rule 16b-3 under the
Exchange Act.

         14.4      TRANSFER. The transfer of a Key Employee between or among
the Company, a Subsidiary or a Parent shall not be treated as a termination
of his or her employment under this Plan.

         14.5      CONSTRUCTION. This Plan shall be construed under the laws
of the State of Georgia.<PAGE>

                                                                   EXHIBIT 10.32

                                                    COMPOSITE COPY INCLUDING THE
                                                FIRST, SECOND, THIRD, FOURTH AND
                                       FIFTH AMENDMENT, EFFECTIVE APRIL 30, 1999

                             HARBINGER CORPORATION

                  AMENDED AND RESTATED 1993 STOCK OPTION PLAN

                           FOR NONEMPLOYEE DIRECTORS

         SECTION 1. PURPOSE. The purpose of the Amended and Restated 1993 Stock
Option Plan for Nonemployee Directors (the "Plan") of Harbinger Corporation (the
"Company") is to promote the interests of the Company and its shareholders by
strengthening the Company's ability to attract and retain the services of
experienced and knowledgeable nonemployee directors by encouraging such
directors to acquire an increased proprietary interest in the Company.

         SECTION 2. SHARES SUBJECT TO THE PLAN. Subject to adjustment as
provided in Section 6, the total number of shares of $.0001 par value common
stock (the "Common Stock") of the Company for which options may be granted under
the Plan (the "Shares") shall be 350,000 less the number of Shares of Common
Stock issuable pursuant to options granted under the Restated 1992 Stock Option
Plan for Nonemployee Directors. The Shares shall be shares currently authorized
but unissued or currently held or subsequently acquired by the Company as
treasury shares, including shares purchased in the open market or in private
transactions. If any option granted under the Plan expires or terminates for any
reason without having been exercised in full, the Shares subject to, but not
delivered under, such option may become available for the grant of other options
under the Plan.

         SECTION 3. PARTICIPATION IN THE PLAN. Each member (a "Director") of the
Company's Board of Directors (the "Board") or the Board of Directors of any
subsidiary who is not otherwise an employee or officer of the Company or any
subsidiary of the Company shall be eligible to participate in the Plan (an
"Eligible Director"); provided, however, that as long as Westinghouse
Communications, Inc. or its permitted assigns is entitled to designate one or
more members of the Board of Directors, any director so designated shall not be
eligible to participate in the Plan. For purposes of this Plan, the term
"subsidiary" means any corporation, fifty percent (50%) or more of the voting
stock of which is owned by the Company or by a subsidiary (as so defined) of the
Company. An Eligible Director to whom an option is granted is sometimes referred
to as an Optionee.

         SECTION 4. NONQUALIFIED STOCK OPTIONS. All options granted under the
Plan shall be nonqualified options not intended to qualify under Section 422 of
the Internal Revenue Code of 1986, as amended (the "Code").

         SECTION 5. OPTION  TERMS.  Each  option  granted  to an Eligible
Director under the Plan and the issuance of Shares thereunder shall be subject
to the terms of this Section 5:

         5.1      OPTION AGREEMENTS. Each option granted under the Plan shall
be evidenced by a Stock Option Agreement and Option Grant in the form
attached hereto as Exhibit "A" (an "Option Agreement") duly executed on
behalf of the Company and by the Eligible Director to whom such option is
granted and dated as of the applicable date of grant. Each Option Agreement
shall be signed on behalf of the Company by an officer or officers delegated
such authority by the Board using either manual or facsimile signature. Each
Option Agreement shall comply with and be subject to the terms and conditions
of the Plan. Any Option Agreement may contain such other terms, provisions
and conditions not inconsistent with the Plan as may be determined by the
Board.

<PAGE>

         5.2      OPTION GRANT SIZE AND GRANT DATES.

                  5.2.1 ANNUAL GRANTS. An option to purchase 15,000 Shares of
Common Stock (as adjusted pursuant to Section 6) shall automatically be granted
to each Eligible Director on the date of, and at a time which shall be
immediately following, the Annual Meeting at which this Plan is approved by the
stockholders of the Company (an "Annual Grant"). Subsequent Options, each for
15,000 Shares of Common Stock (as adjusted pursuant to Section 6), shall be
granted to each Eligible Director on the date of, and at a time which shall be
immediately following, every succeeding Annual Meeting of the stockholders (also
an "Annual Grant"). For purposes of this Plan, "Annual Meeting" means the annual
meeting of the Company's stockholders as described in the Company's Bylaws and
as determined by the Chief Executive Officer of the Company. Subsequent options
shall automatically be granted hereunder at each Annual Meeting until the Shares
available for grant hereunder shall no longer be sufficient to grant each
Eligible Director an option for the number of Shares determined according to
this Section 5.2.1, at which time the Shares remaining available for grant shall
be allocated proportionately among the Eligible Directors entitled to the next
following Annual Grant. Eligible Directors shall not be entitled to any payment
of cash hereunder in lieu of receiving options.

                  5.2.2 INTERIM GRANTS. Each Eligible Director who is first
appointed or elected to the Board and attends a regular quarterly meeting of the
Board which occurs at a time other than at an Annual Meeting shall be granted an
option ("Interim Grant") to purchase a number of Shares of Common Stock equal to
the product of (a) 15,000 (as adjusted pursuant to Section 6) and (b) a
fraction, the numerator of which shall be the number of regular quarterly
directors' meetings expected by the Chief Executive Officer of the Company to
occur between the date that such Eligible Director is appointed or elected to
the Board and the first Annual Meeting following such appointment or election,
and the denominator of which is four. Annual Meetings and regular quarterly
Directors' meetings shall be scheduled according to the Company's Bylaws,
applicable law, and Company policy and shall be designated by the Chief
Executive Officer of the Company.

         5.3      OPTION EXERCISE PRICE. The option exercise price per share
for an Annual or Interim Grant shall be the Fair Market Value (as hereinafter
defined) on the date of grant. Such "Fair Market Value" shall be determined
by the Board on the basis of the reported closing sales price on such date
or, in the absence of a reported closing sales price on such date, on the
basis of the average of reported closing bid and asked prices on such date.
In the absence of either a reported closing sales price or reported bid and
asked prices, the Board shall determine such market value on the basis of the
best available evidence.

         5.4      VESTING; EXERCISABILITY. Each option shall be fully vested
and exercisable on its grant date. Such vesting shall be uniform for all
Eligible Directors under the Plan and is more fully set out in Section 2 of
the Option Agreement.

         5.5      TIME AND MANNER OF OPTION EXERCISE. Any vested and
exercisable option is exercisable in whole or in part (in whole Shares and in
lots of not less than one hundred (100) Shares) at any time or from time to
time during the period the option, by its terms, may be exercised by giving
written notice, signed by the person exercising the option, to the Company
stating the number of Shares with respect to which the option is being
exercised, accompanied by payment in full of the option exercise price for
the number of Shares to be purchased. The date both such notice and payment
are received by the office of the Secretary of the Company shall be the date
of exercise of the stock option as to such number of Shares. No option may at
any time be exercised with respect to a fractional share.

         5.6      PAYMENT OF EXERCISE PRICE. Payment of the option exercise
price may be in cash or by bank-certified, cashier's, or personal check.

<PAGE>

         5.7      TERM OF OPTIONS. Each option granted under the Plan shall
set forth a termination date thereof, which date shall be not later than
seven (7) years from the date such option is granted. In any event, all
options shall terminate and expire upon the first to occur of the following
events:

                  (a) the expiration of (I) thirty (30) days from the date of an
         Optionee's termination of service as a Director of the Company or any
         of its subsidiaries; or, (ii) if an Optionee is disabled (within the
         meaning of Section 22(e)(3) of the Code), the expiration of one (1)
         year from the date of such Optionee's termination of service as a
         Director; or

                  (b) the termination of the option pursuant to Section 6
         hereof.

         The termination of service as a Director by an Optionee by death or
otherwise shall not accelerate or otherwise affect the number of Shares with
respect to which an option may be exercised, and such option may only be
exercised with respect to that number of Shares which could have been
purchased under the option had the option been exercised by the Optionee the
date of such termination. Exercise of a deceased Optionee's options that have
not terminated shall be by the estate of such Optionee or by a person or
persons whom the Optionee has designated in writing filed with the Company
or, if no such designation has been made, by the person or persons to whom
the Optionee's rights have passed by will or by the laws of descent and
distribution.

         5.8      TRANSFERABILITY. The right of any Optionee to exercise an
option granted under the Plan shall, during the lifetime of such Optionee, be
exercisable only by such Optionee or by a person who obtained such option
pursuant to a qualified domestic relations order as defined by the Code or
Title I of the Employee Retirement Income Security Act, as amended, and the
rules thereunder (a "QDRO"), and shall not be assignable or transferable by
such Optionee other than by will or the laws of descent and distribution or a
QDRO unless otherwise determined by the Board.

         5.9      LIMITATION OF RIGHTS.

                  5.9.1 LIMITATION AS TO SHARES. Neither the recipient of an
option under the Plan nor an Optionee's successor or successors in interest
shall have any rights as a shareholder of the Company with respect to any Shares
subject to an option granted to such person until the date of issuance of a
stock certificate for such Shares.

                  5.9.2 LIMITATION AS TO DIRECTORSHIP. Neither the Plan, nor
the granting of an option, nor any other action taken pursuant to the Plan
shall constitute or be evidence of any agreement or understanding, express or
implied, that an Eligible Director has a right to continue as a Director for
any period of time or at any particular rate of compensation.

         5.10      REGULATORY APPROVAL AND COMPLIANCE. The Company shall not
be required to issue any certificate or certificates for Shares upon the
exercise of an option granted under the Plan or to record as a holder of
record of Shares the name of the individual exercising an option under the
Plan, without obtaining to the complete satisfaction of the Board the
approval of all regulatory bodies deemed necessary by the Board and without
complying, to the Board's complete satisfaction, with all rules and
regulations under federal, state, or local law deemed applicable by the Board.

<PAGE>

         SECTION 6. STOCK ADJUSTMENTS; MERGERS. If the Shares of Common Stock
outstanding are increased or decreased or changed into or exchanged for a
different number or kind of shares or other securities of the Company or of
any other corporation by reason of any merger, sale of stock, consolidation,
liquidation, recapitalization, reclassification, stock split, combination of
shares, or stock dividend, then the total number of Shares set forth in
Section 2 shall be proportionately and appropriately adjusted by the Board,
but only to the extent necessary to reflect changes in outstanding options.
If the Company continues in existence, the number and kind of shares that are
subject to any option and the option price per share shall be proportionately
and appropriately adjusted without any change in the aggregate price to be
paid therefor upon exercise of the option. If the Company will not remain in
existence or substantially all of its Common Stock will be purchased by a
single purchaser or group of purchasers acting together, then the Board may
(i) declare that all options shall terminate thirty (30) days after the Board
gives written notice to all Optionees of their immediate right to exercise
all options then outstanding and vested pursuant to the vesting provisions of
said options and of Section 5.4 of the Plan, or (ii) notify all Optionees
that all options granted under the Plan shall apply with appropriate
adjustments as determined by the Board to the securities of the successor
corporation to which holders of the numbers of Shares subject to such options
would have been entitled, or (iii) some combination of aspects of (i) and
(ii). The determination by the Board as to the terms of any adjustments shall
be conclusive and binding. Any fractional shares resulting from any of the
foregoing adjustments under this Section shall be disregarded and eliminated.

         SECTION 7. EXPENSES OF THE PLAN. All costs and expenses of the
adoption and administration of the Plan shall be borne by the Company, and
none of such expenses shall be charged to any Optionee.

         SECTION 8. EFFECTIVE DATE AND DURATION OF THE PLAN. The Plan shall
be effective as of April 30, 1993, subject to approval by the Company's Board
of Directors. The Plan shall continue in effect until April 29, 2003, unless
sooner terminated by action of the Board or the Company's shareholders, but
such termination shall not affect the terms of any then-outstanding options.

         SECTION 9. TERMINATION AND AMENDMENT OF THE PLAN. The Board may
amend, terminate or suspend the Plan at any time, in its sole and absolute
discretion; provided, however, that if required to qualify the Plan under
Rule 16b-3 promulgated under Section 16 of the Exchange Act, no amendment
shall be made more than once every six months that would change the amount,
price or timing of the Annual and Interim Grants, other than to comport with
changes in the Code, or the rules and regulations promulgated thereunder; and
provided, further, that if required to qualify the Plan under Rule 16b-3
promulgated under Section 16 of the Exchange Act, no amendment that would (a)
materially increase the number of Shares that may be issued under the Plan,
(b) materially modify the requirements as to eligibility for participation in
the Plan, or (c) otherwise materially increase the benefits accruing to
participants under the Plan, shall be made without the approval of the
Company's shareholders.

         SECTION 10. INTERPRETATION. This Plan has been prepared with the
intent that participation in the Plan by Eligible Directors will enable such
persons to be classified as "disinterested persons" under Rule 16b-3
promulgated under Section 16 of the Securities and Exchange Act of 1934, as
amended and its provisions shall be construed to fulfill that purpose.

<PAGE>

         SECTION 11. WITHHOLDING. The exercise or surrender of any option
granted under this Plan shall constitute Optionee's full and complete consent
to whatever action the Board directs to satisfy the federal and state tax
withholding requirements, if any, which the Board in its discretion deems
applicable to such exercise or surrender. In addition to and at the time of
payment of the option price, Optionee shall pay to the Company in cash the
full amount of any federal, state and local income, employment or other taxes
required to be withheld from the income of such Optionee as a result of such
exercise. Notwithstanding the above, in the discretion of the Board, any
Option Agreement may provide that all or any portion of such tax obligations,
together with additional taxes not exceeding the actual additional taxes to
be owed by Optionee as a result of such exercise, may, upon the irrevocable
election of Optionee, be paid by tendering to the Company whole Shares of
Common Stock duly endorsed for transfer and owned by Optionee, or by
authorizing the Company to withhold Shares of Common Stock otherwise issuable
upon exercise of the option. Payment of the tax amount by tender or
withholding shall be made by tender or withholding of that number of Shares
having a Fair Market Value on the date of exercise equal to the amount of
such taxes thereby being paid. In all cases, payment of the tax amount by
tender or withholding shall be subject to such restrictions as the Board may
from time to time determine, including any such restrictions as may be
necessary or appropriate to satisfy the conditions of the exemption set forth
in Rule 16b-3 under the Exchange Act.

<PAGE>

                              HARBINGER CORPORATION

                   AMENDED AND RESTATED 1993 STOCK OPTION PLAN

                            FOR NONEMPLOYEE DIRECTORS

                                   EXHIBIT "A"

                     STOCK OPTION AGREEMENT AND OPTION GRANT

                                 [SEE ATTACHED]

<PAGE>

                                    EXHIBIT A
                             STOCK OPTION AGREEMENT
                                       AND
                                  OPTION GRANT

                             HARBINGER CORPORATION
                  AMENDED AND RESTATED 1993 STOCK OPTION PLAN
                           FOR NONEMPLOYEE DIRECTORS

         THIS STOCK OPTION AGREEMENT (the "Option Agreement") is made and
entered into as of the date set forth below, by and between HARBINGER
CORPORATION (hereinafter called the "Company"), a corporation organized and
existing under the laws of the State of Georgia, and the undersigned, an
individual resident of the state designated below (hereinafter called
"Optionee").

         The Company has adopted the "Harbinger Corporation Amended and
Restated 1993 Stock Option Plan for Nonemployee Directors" (the "Plan"). The
Plan was amended on April 30, 1999 to provide for immediate vesting of
option. This Option Agreement is being made pursuant to the Plan and
capitalized terms used herein shall have the same meanings as those terms
have in the Plan unless the context in which these terms are used herein
requires otherwise or the terms are otherwise defined herein. The date of the
grant of the option under this Option Agreement is as of the date specified
below (the "Option Date").

         1. GRANT OF OPTION. The Company hereby grants to Optionee an option to
purchase the number of shares of $.0001 par value Common Stock of the Company
(the "Shares") designated below ("Option Shares"). Any portion of the option not
exercised by Optionee as provided herein will expire on the seventh anniversary
of the Option Date unless sooner terminated as provided herein. The stock issued
on the exercise of this option, when paid for as herein provided, will be fully
paid and nonassessable.

         2. EXERCISE OF OPTION. This option is fully vested and may be exercised
only during the period beginning on the Option Date and ending on the seventh
anniversary date hereof (the "Term") described below.

         The terms contained in the Plan are incorporated into and made a part
of this Option Agreement, and this Option Agreement shall be governed by and
construed in accordance with the Plan. A "regular quarterly meeting" shall refer
to a regular meeting (including an Annual Meeting or a special meeting held in
lieu of a regular meeting) of the Board held on a quarterly basis, as determined
by the Chief Executive Officer of the Company.

         Each exercise of the option shall be by written notice in the form of
an exercise agreement provided by the Board to the President or principal
financial officer of the Company at its principal place of business, accompanied
by payment in cash, by bank-certified, cashier's or personal check in the amount
of the purchase price for the number of the Shares purchased. The date of each
exercise of this option shall be the date upon which the notice is received by
the appropriate officer.

         The Company shall not be obligated to sell or issue any Shares pursuant
to the option unless the issuance of such Shares is at that time effectively
registered or exempt from registration under the Securities Act of 1933, as
amended, and any other applicable securities laws. In connection therewith, the
Company may require from Optionee at the time of exercise reasonable
representations and warranties with respect to the investment intent of Optionee
and Optionee's status as an investor in the Shares in order to qualify for
exemptions from registration under state or federal securities laws.

<PAGE>

         Within a reasonable time after receipt of the notice of exercise, the
Company will take steps to ascertain compliance with this Option Agreement. The
Company shall then cause certificates representing the Shares for the option
exercised to be delivered as soon as reasonably possible, provided, however,
that if any law, regulation, or agreement requires the Company to take action
with respect to the Shares purchased prior to issuance, the date of issuance of
the Shares shall be extended for the period necessary to take such action and
comply with such law, regulation or agreement.

         3. ADMINISTRATION. This Agreement shall be administered, construed and
interpreted by the Board with reference to the terms, conditions, and
interpretive provisions of the Plan.

         4. PURCHASE PRICE. The purchase price per Option Share shall be as
designated below ("Exercise Price"), which is equal to or greater than 100% of
the fair market value of a share of Common Stock as of the Option Date.

         5. TERMINATION OF SERVICE OR DEATH. In the event Optionee, during his
or her life, ceases to be an Eligible Director for any reason, any unexercised
portion of the option shall terminate one (1) year after termination of
Optionee's status as an Eligible Director due to disability (within the meaning
of Section 22(e)(3) of the Internal Revenue Code of 1986, as amended) and thirty
(30) days after the termination of Optionee's status as an Eligible Director for
any other reason, but in no event after the expiration of the term of the
option.

         In the event of the death of Optionee while Optionee is an Eligible
Director, but before the expiration of this option, the personal
representatives, heirs or legatees of Optionee may exercise the option held by
Optionee on the date of Optionee's death. The personal representatives, heirs or
legatees must exercise any such option within thirty (30) days after the date of
the death of Optionee and in any event prior to the date of expiration of the
option, and such exercise otherwise shall be subject to the terms and conditions
of this Option Agreement and the Plan.

         6. NO RIGHTS IN OPTION SHARES. Optionee shall have no rights as a
shareholder in respect of Shares covered by this Option Agreement until the date
of issuance of the Shares to him or her and only after the Shares are fully
paid. Optionee shall have no rights with respect to such Shares not expressly
conferred by this Option Agreement.

         7. NONASSIGNABILITY. This option shall not be encumbered or transferred
in whole or in part except by will or the laws of descent and distribution, and
is exercisable during the lifetime of Optionee only by him or her, except as
expressly permitted by the Board.

<PAGE>

         In consideration for the grant of this option, Optionee promises to use
his or her best efforts in furtherance of the Company's business and prospects
and in the exercise of his or her duties as a member of the Board of Directors
of the Company.

         IN WITNESS WHEREOF, the parties hereunto have set their hands and seals
as of the Option Date set forth below.

 Option Date:                           HARBINGER CORPORATION
            -----------------------
Option Shares:
            -----------------------     By:
Exercise Price:                            ------------------------------------
            -----------------------     Title:
Check One:   Annual Grant                     ---------------------------------
                         ----------
             Interim Grant
                         ----------
                                        OPTIONEE

                                        Address:
                                                ------------------------------
                                                ------------------------------
                                                ------------------------------
                                        State of Residence:
                                                           -------------------

<PAGE>

                             HARBINGER CORPORATION

                  AMENDED AND RESTATED 1993 STOCK OPTION PLAN

                           FOR NONEMPLOYEE DIRECTORS

                                  EXHIBIT "B"

                    STOCK OPTION AGREEMENT AND OPTION GRANT

                                 [SEE ATTACHED]

<PAGE>

                                   EXHIBIT B
                             STOCK OPTION AGREEMENT
                                      AND
                                  OPTION GRANT

                             HARBINGER CORPORATION
                  AMENDED AND RESTATED 1993 STOCK OPTION PLAN
                       FOR (DUTCH) NONEMPLOYEE DIRECTORS

         THIS STOCK OPTION AGREEMENT (the "Option Agreement") is made and
entered into as of the date set forth below, by and between HARBINGER
CORPORATION (hereinafter called the "Company"), a corporation organized and
existing under the laws of the State of Georgia, and the undersigned, an
individual resident of the state designated below (hereinafter called
"Optionee").

         The Company has adopted the Harbinger Corporation Amended and Restated
1993 Stock Option Plan for Nonemployee Directors (the "Plan"). The Plan was
amended on April 30, 1999 to provide for immediate vesting of options. This
Option Agreement is being made pursuant to the Plan and capitalized terms used
herein shall have the same meanings as those terms have in the Plan unless the
context in which these terms are used herein requires otherwise or the terms are
otherwise defined herein. The date of the grant of the option under this Option
Agreement is as of the date specified below (the "Option Date").

         1. GRANT OF OPTION. The Company hereby grants to Optionee an option to
purchase the number of shares of $.0001 par value Common Stock of the Company
(the "Shares") designated below ("Option Shares"). Any portion of the option not
exercised by Optionee as provided herein will expire on the day prior to the
fifth anniversary of the Option Date unless sooner terminated as provided
herein. The stock issued on the exercise of this option, when paid for as herein
provided, will be fully paid and nonassessable.

         2. EXERCISE OF OPTION. This option is fully vested and may be exercised
only during the period beginning on the Option Date and ending on the day prior
to the fifth anniversary date hereof (the "Term") described below.

         The terms contained in the Plan are incorporated into and made a part
of this Option Agreement, and this Option Agreement shall be governed by and
construed in accordance with the Plan. A "regular quarterly meeting" shall refer
to a regular meeting (including an Annual Meeting or a special meeting held in
lieu of a regular meeting) of the Board held on a quarterly basis, as determined
by the Chief Executive Officer of the Company.

         Each exercise of the option shall be by written notice in the form of
an exercise agreement provided by the Board to the President or principal
financial officer of the Company at its principal place of business, accompanied
by payment in cash, by bank-certified, cashier's or personal check in the amount
of the purchase price for the number of the Shares purchased. The date of each
exercise of this option shall be the date upon which the notice is received by
the appropriate officer.

<PAGE>

         The Company shall not be obligated to sell or issue any Shares pursuant
to the option unless the issuance of such Shares is at that time effectively
registered or exempt from registration under the Securities Act of 1933, as
amended, and any other applicable securities laws. In connection therewith, the
Company may require from Optionee at the time of exercise reasonable
representations and warranties with respect to the investment intent of Optionee
and Optionee's status as an investor in the Shares in order to qualify for
exemptions from registration under state or federal securities laws.

         Within a reasonable time after receipt of the notice of exercise, the
Company will take steps to ascertain compliance with this Option Agreement. The
Company shall then cause certificates representing the Shares for the option
exercised to be delivered as soon as reasonably possible, provided, however,
that if any law, regulation, or agreement requires the Company to take action
with respect to the Shares purchased prior to issuance, the date of issuance of
the Shares shall be extended for the period necessary to take such action and
comply with such law, regulation or agreement.

         3. ADMINISTRATION. This Agreement shall be administered, construed and
interpreted by the Board with reference to the terms, conditions, and
interpretive provisions of the Plan.

         4. PURCHASE PRICE. The purchase price per Option Share shall be as
designated below ("Exercise Price"), which is equal to or greater than 100% of
the fair market value of a share of Common Stock as of the Option Date.

         5. TERMINATION OF SERVICE OR DEATH. In the event Optionee, during his
or her life, ceases to be an Eligible Director for any reason, any unexercised
portion of the option shall terminate one (1) year after termination of
Optionee's status as an Eligible Director due to disability (within the meaning
of Section 22(e)(3) of the Internal Revenue Code of 1986, as amended) and thirty
(30) days after the termination of Optionee's status as an Eligible Director for
any other reason, but in no event after the expiration of the term of the
option.

         In the event of the death of Optionee while Optionee is an Eligible
Director, but before the expiration of this option, the personal
representatives, heirs or legatees of Optionee may exercise the option held by
Optionee. The personal representatives, heirs or legatees must exercise any such
option within thirty (30) days after the date of the death of Optionee and in
any event prior to the date of expiration of the option, and such exercise
otherwise shall be subject to the terms and conditions of this Option Agreement
and the Plan. 6. NO RIGHTS IN OPTION SHARES. Optionee shall have no rights as a
shareholder in respect of Shares covered by this Option Agreement until the date
of issuance of the Shares to him or her and only after the Shares are fully
paid. Optionee shall have no rights with respect to such Shares not expressly
conferred by this Option Agreement.

         7. NONASSIGNABILITY. This option shall not be encumbered or transferred
in whole or in part except by will or the laws of descent and distribution, and
is exercisable during the lifetime of Optionee only by him or her, except as
expressly permitted by the Board.

<PAGE>

         In consideration for the grant of this option, Optionee promises to use
his or her best efforts in furtherance of the Company's business and prospects
and in the exercise of his or her duties as a member of the Board of Directors
of the Company.

         IN WITNESS WHEREOF, the parties hereunto have set their hands and seals
as of the Option Date set forth below.

Option Date:                                 HARBINGER CORPORATION
              ---------------------------
Option Shares:
              ---------------------------    By:
Exercise Price:                                 -------------------------------
              ---------------------------    Title:
Check One:        Annual Grant                     ----------------------------
                              -----------
                  Interim Grant
                              -----------
                                             OPTIONEE

                                             ----------------------------------

                                             Address:
                                                     --------------------------
                                                     --------------------------
                                                     --------------------------
                                             State of Residence:
                                                                ---------------

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