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                                                                   Exhibit 10.26

                          EXECUTIVE RETENTION AGREEMENT

         THIS EXECUTIVE RETENTION AGREEMENT is made as of November 17, 2000 by
and between Open Market, Inc., a Delaware corporation (the "Company"), and Ed
Durkin (the "Executive").

         The Board of Directors of the Company (the "Board") has determined that
it is in the best interests of the Company and its shareholders to assure that
the Company will have the continued dedication of the Executive, notwithstanding
the possibility, threat or occurrence of a Change of Control (as defined below)
of the Company. The Board believes it is imperative to diminish the inevitable
distraction of the Executive by virtue of the personal uncertainties and risks
created by a pending or threatened Change of Control and to encourage the
Executive's full attention and dedication to the Company currently and in the
event of any threatened or pending Change of Control, and to provide the
Executive with compensation and benefits arrangements upon a Change of Control
which ensure that the compensation and benefits expectations of the Executive
will be satisfied and which are competitive with those of other corporations.
Therefore, in order to accomplish these objectives, the Board has caused the
Company to enter into this Agreement.

         NOW, THEREFORE, IT IS HEREBY AGREED AS FOLLOWS:

         1. CERTAIN DEFINITIONS.

                  (a) The "Effective Date" shall mean the first date during the
Change of Control Period (as defined in Section 1(b)) on which a Change of
Control (as defined in Section 2) occurs. Anything in this Agreement to the
contrary notwithstanding, if a Change of Control occurs and if the Executive's
employment with the Company is terminated prior to the date on which the Change
of Control occurs, and if it is reasonably demonstrated by the Executive that
such termination of employment (i) was at the request of a third party who has
taken steps reasonably calculated to effect a Change of Control or (ii)
otherwise arose in connection with or anticipation of a Change of Control, then
for all purposes of this Agreement the "Effective Date" shall mean the date
immediately prior to the date of such termination of employment.

                  (b) The "Change of Control Period" shall mean the period
commencing on the date hereof and ending on the second anniversary of the date
hereof; provided, however, that commencing on the date one year after the date
hereof, and on each annual anniversary of such date (such date and each annual
anniversary thereof shall be hereinafter referred to as the

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"Renewal Date"), unless previously terminated, the Change of Control Period
shall be automatically extended so as to terminate two years from such Renewal
Date, unless at least 90 days prior to the Renewal Date the Company shall give
notice to the Executive that the Change of Control Period shall not be so
extended.

         2. CHANGE OF CONTROL. For the purpose of this Agreement, a "Change of
Control" shall mean:

                  (a) The acquisition by an individual, entity or group (within
the meaning of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act of
1934, as amended (the "Exchange Act"))(a "Person") of beneficial ownership
(within the meaning of Rule 13d-3 promulgated under the Exchange Act) of 50% or
more of either (i) the then-outstanding shares of common stock of the Company
(the "Outstanding Company Common Stock") or (ii) the combined voting power of
the then-outstanding voting securities of the Company entitled to vote generally
in the election of directors (the "Outstanding Company Voting Securities");
provided, however, that for purposes of this subsection (a), the following
acquisitions shall not constitute a Change of Control: (i) any acquisition
directly from the Company, (ii) any acquisition by the Company, (iii) any
acquisition by any employee benefit plan (or related trust) sponsored or
maintained by the Company or any corporation controlled by the Company, or (iv)
any acquisition by any corporation pursuant to a transaction which satisfies the
criteria set forth in clauses (i), (ii) and (iii) of subsection (c) of this
Section 2; or

                  (b) Individuals who, as of the date hereof, constitute the
Board (the "Incumbent Board") cease for any reason to constitute at least a
majority of the Board; provided, however, that any individual becoming a
director subsequently to the date hereof whose election, or nomination for
election by the Company's shareholders, was approved by a vote of at least a
majority of the directors then comprising the Incumbent Board shall be
considered as though such individual were a member of the Incumbent Board, but
excluding, for this purpose, any such individual whose initial assumption of
office occurs as a result of an actual or threatened election contest with
respect to the election or removal of directors or other actual or threatened
solicitation of proxies or consents by or on behalf of a Person other than the
Board; or

                  (c) Consummation of a reorganization, merger or consolidation
or sale or other disposition of all or substantially all of the assets of the
Company (a "Business Combination"), in each case, unless, following such
Business Combination, (i) all or substantially all of the individuals and
entities who were the beneficial owners, respectively, of the Outstanding
Company Common Stock and Outstanding Company Voting Securities immediately prior
to such Business Combination beneficially own, directly or indirectly, more than
50% of, respectively, the then-outstanding shares of common stock and the
combined voting power of the then-outstanding voting securities entitled to vote
generally in the election of directors of the corporation resulting from such
Business Combination (which as used in this Section 2(c) shall include, without
limitation, a corporation which as a result of such transaction

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owns the Company or all or substantially all of the Company's assets either
directly or through one or more subsidiaries) in substantially the same
proportions as their ownership, immediately prior to such Business Combination
of the Outstanding Company Common Stock and Outstanding Company Voting
Securities, as the case may be, (ii) no Person (excluding any corporation
resulting from such Business Combination or any employee benefit plan (or
related trust) of the Company or such corporation resulting from such Business
Combination) beneficially owns, directly or indirectly, 50% or more of,
respectively, the then outstanding shares of common stock of the corporation
resulting from such Business Combination, or the combined voting power of the
then-outstanding voting securities of such corporation and (iii) at least half
of the members of the board of directors of the corporation resulting from such
Business Combination were members of the Incumbent Board at the time of the
execution of the initial agreement, or of the action of the Board, providing for
such Business Combination.

         3. EMPLOYMENT PERIOD. The Company hereby agrees to continue the
Executive in its employ, and the Executive hereby agrees to remain in the employ
of the Company subject to the terms and conditions of this Agreement, for the
period commencing on the Effective Date and ending on the first anniversary of
such date (the "Employment Period"). Except as provided in Section 1(a), nothing
in this Agreement shall, prior to the Effective Date, impose upon the Company
any obligation to retain the Executive, either as an employee or as a Section 16
Officer of the Company ("Corporate Officer"). In addition, nothing in this
Agreement shall restrict the Executive from terminating his employment with the
Company, and no such termination by the Executive shall be deemed a breach of
this Agreement.

         4. TERMS OF EMPLOYMENT.

            (a) POSITION AND DUTIES.

                (i) During the Employment Period, (A) the Executive's position
(including status, offices, titles and reporting requirements), authority,
duties and responsibilities shall be substantially commensurate in all material
respects with the most significant of those held, exercised and assigned at any
time during the 120-day period immediately preceding the Effective Date and (B)
the Executive's services shall be performed at the location where the Executive
was employed immediately preceding the Effective Date or any office or location
less than 35 miles from such location.

                (ii) During the Employment Period, and excluding any periods of
vacation and sick leave to which the Executive is entitled, the Executive agrees
to devote reasonable attention and time during normal business hours to the
business and affairs of the Company and, to the extent necessary to discharge
the responsibilities assigned to the Executive hereunder, to use the Executive's
reasonable best efforts to perform faithfully and efficiently such
responsibilities. During the Employment Period it shall not be a violation of
this Agreement for

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the Executive to (A) serve on corporate, civic or charitable boards or
committees, (B) deliver lectures, fulfill speaking engagements or teach at
educational institutions, and (C) manage personal investments, so long as such
activities do not significantly interfere with the performance of the
Executive's responsibilities as an employee of the Company in accordance with
this Agreement. It is expressly understood and agreed that to the extent that
any such activities have been conducted by the Executive prior to the Effective
Date, the continued conduct of such activities (or the conduct of activities
similar in nature and scope thereto) subsequent to the Effective Date shall not
thereafter be deemed to interfere with the performance of the Executive's
responsibilities to the Company.

            (b) COMPENSATION.

                (i) BASE SALARY. During the Employment Period, the Executive
shall receive an annual base salary ("Annual Base Salary"), which shall be paid
at a monthly rate, at least equal to twelve times the highest monthly base
salary paid or payable, including any base salary which has been earned but
deferred, to the Executive by the Company and its affiliated companies in
respect of the twelve-month period immediately preceding the month in which the
Effective Date occurs. During the Employment Period, the Annual Base Salary
shall be reviewed no more than 12 months after the last salary increase awarded
to the Executive prior to the Effective Date. Any increase in Annual Base Salary
shall not serve to limit or reduce any other obligation to the Executive under
this Agreement. Annual Base Salary shall not be reduced after any such increase
and the term Annual Base Salary as utilized in this Agreement shall refer to
Annual Base Salary as so increased. As used in this Agreement, the term
"affiliated companies" shall include any company controlled by, controlling or
under common control with the Company.

                (ii) ANNUAL BONUS. During the Employment Period, in addition to
Annual Base Salary, the Executive shall be entitled to receive such annual bonus
as may be determined by the Board of Directors, but in no event less than the
annual bonus paid or payable in respect of the full fiscal year immediately
preceding the Effective Date.

                (iii) INCENTIVE PLANS. During the Employment Period, the
Executive shall be entitled to participate in all incentive plans, practices,
policies and programs applicable generally to other peer Executives of the
Company and its affiliated companies, but in no event shall such plans,
practices, policies and programs provide the Executive with benefits which are
less favorable, in the aggregate, than the most favorable of such plans,
practices, policies and programs in effect for the Executive at any time during
the 120-day period immediately preceding the Effective Date or, if more
favorable to the Executive, those provided generally at any time after the
Effective Date to other peer executives of the Company and its affiliated
companies.

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                (iv) WELFARE BENEFIT, SAVINGS AND RETIREMENT PLANS. During the
Employment Period, the Executive and/or the Executive's family, as the case may
be, shall be eligible for participation in and shall receive all benefits under
welfare benefit, savings and retirement plans, practices, policies and programs
provided by the Company and its affiliated companies (including, without
limitation, medical, prescription, dental, disability, employee life, group
life, split-dollar life, accidental death and travel accident insurance plans
and programs) to the extent applicable generally to other peer executives of the
Company, but in no event shall such plans, practices, policies and programs
provide the Executive with benefits which are less favorable, in the aggregate,
than the most favorable of such plans, practices, policies and programs in
effect for the Executive at any time during the 120-day period immediately
preceding the Effective Date or, if more favorable to the Executive, those
provided generally at any time after the Effective Date to other peer executives
of the Company and its affiliated companies.

                (v) EXPENSES. During the Employment Period, the Executive shall
be entitled to receive reimbursement for all reasonable expenses incurred by the
Executive in accordance with the policies, practices and procedures of the
Company in effect immediately prior to the Effective Date.

                (vi) VACATION. During the Employment Period, the Executive shall
be entitled to paid vacation in accordance with the plans, policies, programs
and practices of the Company and its affiliated companies, but in no event shall
such plans, practices, policies and programs provide the Executive with benefits
which are less favorable, in the aggregate, than the most favorable of such
plans, practices, policies and programs in effect for the Executive at any time
during the 120-day period immediately preceding the Effective Date or, if more
favorable to the Executive, those provided generally at any time after the
Effective Date to other peer executives of the Company and its affiliated
companies.

         5. TERMINATION OF EMPLOYMENT.

            (a) DEATH OR DISABILITY. The Executive's employment shall terminate
automatically upon the Executive's death during the Employment Period. If the
Company determines in good faith that the Disability of the Executive has
occurred during the Employment Period (pursuant to the definition of Disability
set forth below), it may give to the Executive written notice in accordance with
Section 12(b) of this Agreement of its intention to terminate the Executive's
employment. In such event, the Executive's employment with the Company shall
terminate effective on the 30th day after receipt of such notice by the
Executive (the "Disability Effective Date"), provided that, within the 30 days
after such receipt, the Executive shall not have returned to full-time
performance of the Executive's duties. For purposes of this Agreement,
"Disability" shall mean the absence of the Executive from the Executive's duties
with the Company on a full-time basis for six (6) months as a result of
incapacity due to mental or physical illness which is determined to be total and
permanent by a physician selected by the

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Company or its insurers and acceptable to the Executive or the Executive's legal
representative.

            (b) CAUSE. Subject to Section 5(d), the Company may terminate the
Executive's employment during the Employment Period for Cause. For purposes of
this Agreement, "Cause" shall mean:

                (i) the willful failure of the Executive to perform
         substantially the Executive's duties with the Company (other than any
         such failure resulting from incapacity due to physical or mental
         illness), which failure is not cured within 30 days after a written
         demand for substantial performance is delivered to the Executive by the
         Board which specifically identifies the manner in which the Board
         believes that the Executive has not substantially performed the
         Executive's duties, or

                (ii) the willful engaging by the Executive in illegal conduct or
         gross misconduct which is materially and demonstrably injurious to the
         Company.

For purposes of this provision, no act or failure to act, on the part of the
Executive, shall be considered "willful" unless it is done, or omitted to be
done, by the Executive in bad faith or without reasonable belief that the
Executive's action or omission was in the best interests of the Company.

            (c) GOOD REASON. The Executive's employment may be terminated by the
Executive for Good Reason. For purposes of this Agreement, "Good Reason" shall
mean:

                (i) the assignment to the Executive of any duties
         inconsistent in any material respect with the Executive's position
         (including status, offices, titles and reporting requirements),
         authority, duties or responsibilities as contemplated by Section 4(a)
         of this Agreement, or any other action by the Company which results in
         a diminution in such position, authority, duties or responsibilities,
         excluding for this purpose an isolated, insubstantial and inadvertent
         action not taken in bad faith and which is remedied by the Company
         promptly after receipt of notice thereof given by the Executive;

                (ii) any failure by the Company to comply with any of the
         provisions of Section 4(b) of this Agreement or any other provision
         hereof requiring a payment or provision of a benefit to the Executive,
         other than an isolated, insubstantial and inadvertent failure not
         occurring in bad faith and which is remedied by the Company promptly
         after receipt of notice thereof given by the Executive;

                (iii) the Company's requiring the Executive to be based at any
         office or location other than as provided in Section 4(a)(i)(B) hereof
         or the Company's requiring the Executive to travel on Company business
         to a substantially greater extent than required immediately prior to
         the Effective Date;

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                (iv) any purported termination by the Company of the Executive's
         employment otherwise than as expressly permitted by this Agreement; or

                (v) any failure by the Company to comply with and satisfy
         Section 11(c) of this Agreement.

         (d) NOTICE OF TERMINATION.

             (i) Any termination by the Company for Cause, or by the Executive
for Good Reason, shall be effected by Notice of Termination to the other party
hereto given in accordance with Section 12(b) of this Agreement. For purposes of
this Agreement, a "Notice of Termination" means a written notice which (i)
indicates the specific termination provision in this Agreement relied upon, (ii)
to the extent applicable, sets forth in reasonable detail the facts and
circumstances claimed to provide a basis for termination of the Executive's
employment under the provision so indicated and (iii) if the Date of Termination
(as defined below) is other than the date of receipt of such notice, specifies
the termination date (which date shall be not more than thirty days after the
giving of such notice). The failure by the Executive or the Company to set forth
in the Notice of Termination any fact or circumstance which contributes to a
showing of Good Reason or Cause shall not waive any right of the Executive or
the Company, respectively, hereunder or preclude the Executive or the Company,
respectively, from asserting such fact or circumstances in enforcing the
Executive's or the Company's rights hereunder.

             (ii) Any Notice of Termination for Cause must be given within
ninety (90) days of the Board learning of the event(s) or circumstance(s) which
the Board believes constitute(s) Cause. Prior to any Notice of Termination for
Cause being given (and prior to any termination for Cause being effective), the
Executive shall be entitled to a hearing before the Board, or a committee
thereof, at which he may, at his election, be represented by counsel and at
which he shall have a reasonable opportunity to be heard. Such hearing shall be
held on not less than fifteen days prior written notice to the Executive stating
the Board's intention to terminate the Executive for Cause and stating in detail
the particular event(s) or circumstance(s) which the Board believes
constitute(s) Cause for termination.

         (e) DATE OF TERMINATION. "Date of Termination" means (i) if the
Executive's employment is terminated by the Company for Cause, or by the
Executive for Good Reason, the date of receipt of the Notice of Termination or
any later date specified therein, as the case may be, subject, in the case of
termination by the Company for Cause, to the Company's compliance with Section
5(d)(ii); (ii) if the Executive's employment is terminated by the Company other
than for Cause or Disability, the Date of Termination shall be the date on which
the Company notifies the Executive of such termination; and (iii) if the
Executive's employment is terminated by

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reason of death or Disability, the Date of Termination shall be the date of
death of the Executive or the Disability Effective Date, as the case may be.

         6. OBLIGATIONS OF THE COMPANY UPON TERMINATION.

            (a) GOOD REASON; OTHER THAN FOR CAUSE OR DISABILITY. If, during the
Employment Period, the Company shall terminate the Executive's employment other
than for Cause or Disability or the Executive shall terminate employment for
Good Reason:

                (i) the Company shall pay to the Executive in a lump sum in cash
         within 30 days after the Date of Termination the aggregate of the
         following amounts:

                    A. the sum of (1) the Executive's Annual Base Salary through
            the Date of Termination to the extent not theretofore paid, (2) the
            product of (x) the higher of (I) the highest annual cash bonus paid
            to the Executive in the last two fiscal years prior to the Effective
            Date (or if the Executive has not been employed by the Company in
            such prior fiscal year, then the Executive's annual target bonus for
            such fiscal year) and (II) the annual bonus paid or payable,
            including any bonus or portion thereof which has been earned but
            deferred (and annualized for any fiscal year consisting of less than
            twelve full months or during which the Executive was employed for
            less than twelve full months), for the most recently completed
            fiscal year during the Employment Period, if any (such higher amount
            being referred to as the "Highest Annual Bonus") and (y) a fraction,
            the numerator of which is the number of days in the current fiscal
            year through the Date of Termination, and the denominator of which
            is 365 and (3) any compensation previously deferred by the Executive
            (together with any accrued interest or earnings thereon) and any
            accrued vacation pay, in each case to the extent not theretofore
            paid (the sum of the amounts described in clauses (1), (2), and (3)
            shall be hereinafter referred to as the "Accrued Obligations"); and

                    B. the amount equal to the sum of (x) the Executive's Annual
            Base Salary and (y) the Highest Annual Bonus;

                (ii) for twelve (12) months after the Executive's Date of
         Termination, or such longer period as may be provided by the terms of
         the appropriate plan, program, practice or policy, the Company shall
         continue benefits to the Executive and/or the Executive's family at
         least equal to those which would have been provided to them in
         accordance with the plans, programs, practices and policies described
         in Section 4(b)(iv) of this Agreement (excluding any savings and/or
         retirement plans) if the Executive's employment had not been terminated
         or, if more favorable to the Executive, as in effect generally at any
         time thereafter with respect to other peer executives of the Company
         and its affiliated companies and their families, provided, however,
         that if the Executive becomes reemployed with another employer and is
         eligible to receive medical or other welfare benefits under another
         employer-provided plan, the medical and

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         other welfare benefits described herein shall be secondary to those
         provided under such other plan during such applicable period of
         eligibility. For purposes of determining eligibility (but not the time
         of commencement of benefits) of the Executive for retiree benefits
         pursuant to such plans, practices, programs and policies, the Executive
         shall be considered to have remained employed until twelve (12) months
         after the Date of Termination and to have retired on the last day of
         such period;

                (iii) to the extent not theretofore paid or provided, the
         Company shall timely pay or provide to the Executive any other amounts
         or benefits required to be paid or provided or which the Executive was
         as of the date of such termination eligible to receive under any plan,
         program, policy or practice or contract or agreement of the Company and
         its affiliated companies (such other amounts and benefits shall be
         hereinafter referred to as the "Other Benefits"); and

                (iv) outstanding options to purchase shares of Common Stock of
         the Company (or shares of capital stock for which such shares of Common
         Stock have been exchanged in a Business Combination) held by the
         Executive shall become immediately exercisable; PROVIDED, HOWEVER, that
         if, during the nine-month period subsequent to the date of this
         Agreement, (A) a Change of Control occurs as a result of a Business
         Combination and (B) the acquiring entity and the Company desire to
         account for such Business Combination as a "pooling-of-interests"
         business combination, as defined by Accounting Principles Board Opinion
         No. 16 (or its successor) and (C) the right to the acceleration of the
         exercisability of all outstanding unvested options to purchase Common
         Stock of the Company (or unvested shares of capital stock for which
         such shares of Common Stock have been exchanged in a Business
         Combination), as provided for in this Section 6(a)(iv), precludes the
         Business Combination to be accounted for as a pooling-of-interests
         business combination, as determined by the Company's Chief Financial
         Officer, then, the provisions of this Section 6(a)(iv) are revoked and
         shall have no force or effect.

            (b) DEATH. If the Executive's employment is terminated by reason of
the Executive's death during the Employment Period, this Agreement shall
terminate without further obligations to the Executive's legal representatives
under this Agreement, other than for payment of Accrued Obligations and the
timely payment or provision of Other Benefits. Accrued Obligations shall be paid
to the Executive's estate or beneficiary, as applicable, in a lump sum in cash
within 30 days of the Date of Termination.

            (c) DISABILITY. If the Executive's employment is terminated by
reason of the Executive's Disability during the Employment Period, this
Agreement shall terminate without further obligations to the Executive, other
than for payment of Accrued Obligations and the timely payment or provision of
Other Benefits. Accrued Obligations shall be paid to the Executive in a lump sum
in cash within 30 days of the Date of Termination.

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            (d) CAUSE OR OTHER THAN FOR GOOD REASON. If the Executive's
employment shall be terminated for Cause during the Employment Period, this
Agreement shall terminate without further obligations to the Executive other
than the obligation to pay to the Executive (x) his Annual Base Salary through
the Date of Termination, (y) the amount of any compensation previously deferred
by the Executive, and (z) Other Benefits, in each case to the extent theretofore
unpaid or not yet provided. If the Executive voluntarily terminates employment
during the Employment Period, excluding a termination for Good Reason, this
Agreement shall terminate without further obligations to the Executive, other
than for Accrued Obligations and the timely payment or provision of Other
Benefits. In such case, all Accrued Obligations shall be paid to the Executive
in a lump sum in cash within 30 days of the Date of Termination.

         7. NONEXCLUSIVITY OF RIGHTS. Nothing in this Agreement shall prevent or
limit the Executive's continuing or future participation in any plan, program,
policy or practice provided by the Company or any of its affiliated companies
and for which the Executive may qualify, nor, subject to Section 12(f), shall
anything herein limit or otherwise affect such rights as the Executive may have
under any contract or agreement with the Company or any of its affiliated
companies. Amounts which are vested benefits or which the Executive is otherwise
entitled to receive under any plan, policy, practice or program of or any
contract or agreement with the Company or any of its affiliated companies at or
subsequent to the Date of Termination shall be payable in accordance with such
plan, policy, practice or program or contract or agreement except as explicitly
modified by this Agreement.

         8. FULL SETTLEMENT; RELEASE OF CLAIMS. The Company's obligation to make
the payments provided for in this Agreement and otherwise to perform its
obligations hereunder shall not be affected by any set-off, counterclaim,
recoupment, defense or other claim, right or action which the Company may have
against the Executive (under this Agreement or otherwise) or others. In no event
shall the Executive be obligated to seek other employment or take any other
action by way of mitigation of the amounts payable to the Executive under any of
the provisions of this Agreement and such amounts shall not be reduced whether
or not the Executive obtains other employment. Except in such cases where the
Executive is found by a court of competent jurisdiction to have acted in bad
faith, the Company agrees to pay as incurred, to the full extent permitted by
law, all legal, accounting and other fees and expenses (including, without
limitation, of expert witnesses) which the Executive may reasonably incur (i) as
a result of any contest (regardless of the outcome thereof) by the Company, the
Executive or others of the validity or enforceability of, or liability under,
any provision of this Agreement or any guarantee of performance thereof
(including as a result of any contest by the Executive about the amount of any
payment pursuant to this Agreement), plus in each case interest on any delayed
payment at the applicable Federal rate provided for in Section 7872(f)(2)(A) of
the Internal Revenue Code of 1986, as amended (the "Code") and (ii) in
connection with the Executive's performance of his obligations under Section
9(c). Notwithstanding any other provision to the contrary herein, the Company
shall not be required to make any payments hereunder to the Executive unless and
until

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the Executive enters into a mutually satisfactory mutual release pursuant to
which the Company and Executive release such other (and their respective
affiliates) from all claims related to employment and the termination thereof.

         9. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

            (a) Anything in this Agreement to the contrary notwithstanding and
except as set forth below, in the event it shall be determined that any payment
or distribution by the Company to or for the benefit of the Executive (whether
paid or payable or distributed or distributable pursuant to the terms of this
Agreement or otherwise, but determined without regard to any additional payments
required under this Section 9)(a "Payment") would be subject to the excise tax
imposed by Section 4999 of the Code or any interest or penalties are incurred by
the Executive with respect to such excise tax (such excise tax, together with
any such interest and penalties, are hereinafter collectively referred to as the
"Excise Tax"), then the Executive shall be entitled to receive an additional
payment (a "Gross-Up Payment") in an amount such that after payment by the
Executive of all taxes (including any interest or penalties imposed with respect
to such taxes), including, without limitation, any income taxes (and any
interest and penalties imposed with respect thereto) and Excise Tax imposed upon
the Gross-Up Payment, the Executive retains an amount of the Gross-Up Payment
equal to the Excise Tax imposed upon the Payments. Notwithstanding the foregoing
provisions of this Section 9(a), if it shall be determined that the Executive is
entitled to a Gross-Up Payment, but that the Executive, after taking into
account the Payments and the Gross-Up Payment, would not receive a net after-tax
benefit of at least $50,000 (taking into account both income taxes and any
Excise Tax) as compared to the net after-tax proceeds to the Executive resulting
from an elimination of the Gross-Up Payment and a reduction of the Payments, in
the aggregate, to an amount (the "Reduced Amount") such that the receipt of
Payments would not give rise to any Excise Tax, then no Gross-Up Payment shall
be made to the Executive and the Payments, in the aggregate, shall be reduced to
the Reduced Amount.

            (b) Subject to the provisions of Section 9(c), all determinations
required to be made under this Section 9, including whether and when a Gross-Up
Payment is required and the amount of such Gross-Up Payment and the assumptions
to be utilized in arriving at such determination, shall be made by Arthur
Andersen LLP or such other certified public accounting firm as may be designated
by the Executive (the "Accounting Firm") which shall provide detailed supporting
calculations both to the Company and the Executive within 15 business days of
the receipt of notice from the Executive that there has been a Payment, or such
earlier time as is requested by the Company. In the event that the Accounting
Firm is serving as accountant or auditor for the individual, entity or group
effecting the Change of Control, the Executive shall appoint another nationally
recognized accounting firm to make the determinations required hereunder (which
accounting firm shall then be referred to as the Accounting Firm hereunder). All
fees and expenses of the Accounting Firm shall be borne solely by the Company.
Any

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Gross-Up Payment, as determined pursuant to this Section 9, shall be paid by the
Company to the Executive within five days of the receipt of the Accounting
Firm's determination. Any determination by the Accounting Firm shall be binding
upon the Company and the Executive. As a result of the uncertainty in the
application of Section 4999 of the Code at the time of the initial determination
by the Accounting Firm hereunder, it is possible that Gross-Up Payments which
will not have been made by the Company should have been made ("Underpayment"),
consistent with the calculations required to be made hereunder. In the event
that the Company exhausts its remedies pursuant to Section 9(c) and the
Executive thereafter is required to make a payment of any Excise Tax, the
Accounting Firm shall determine the amount of the Underpayment that has occurred
and any such Underpayment shall be promptly paid by the Company to or for the
benefit of the Executive.

            (c) The Executive shall notify the Company in writing of any claim
by the Internal Revenue Service that, if successful, would require the payment
by the Company of the Gross-Up Payment. Such notification shall be given as soon
as practicable but no later than ten business days after the Executive is
informed in writing of such claim and shall apprise the Company of the nature of
such claim and the date on which such claim is requested to be paid. The
Executive shall not pay such claim prior to the expiration of the 30-day period
following the date on which it gives such notice to the Company (or such shorter
period ending on the date that any payment of taxes with respect to such claim
is due). If the Company notifies the Executive in writing prior to the
expiration of such period that it desires to contest such claim, the Executive
shall:

                (i) give the Company any information reasonably requested by the
         Company and available to the Executive relating to such claim,

                (ii) take such action in connection with contesting such claim
         as the Company shall reasonably request in writing from time to time,
         including, without limitation, accepting legal representation with
         respect to such claim by an attorney reasonably selected by the
         Company,

                (iii) cooperate with the Company in good faith in order
         effectively to contest such claim, and

                (iv) permit the Company to participate in any proceedings
         relating to such claim;

provided, however, that the Company shall bear and pay directly all costs and
expenses (including additional interest and penalties) incurred in connection
with such contest and shall indemnify and hold the Executive harmless, on an
after-tax basis, for any Excise Tax or income tax (including interest and
penalties with respect thereto) imposed as a result of such

                                      -12-
<PAGE>

representation and payment of costs and expenses. Without limitation on the
foregoing provisions of this Section 9(c), the Company shall control all
proceedings taken in connection with such contest and, at its sole option, may
pursue or forgo any and all administrative appeals, proceedings, hearings and
conferences with the taxing authority in respect of such claim and may, at its
sole option, either direct the Executive to pay the tax claimed and sue for a
refund or to contest the claim in any permissible manner, and the Executive
agrees to prosecute such contest to a determination before any administrative
tribunal, in a court of initial jurisdiction and in one or more appellate
courts, as the Company shall determine; provided, however, that if the Company
directs the Executive to pay such claim and sue for a refund, the Company shall
advance the amount of such payment to the Executive, on an interest-free basis
and shall indemnify and hold the Executive harmless, on an after-tax basis, from
any Excise Tax or income tax (including interest or penalties with respect
thereto) imposed with respect to such advance or with respect to any imputed
income with respect to such advance; and further provided that any extension of
the statute of limitations relating to payment of taxes for the taxable year of
the Executive with respect to which such contested amount is claimed to be due
is limited solely to such contested amount. Furthermore, the Company's control
of the contest shall be limited to issues with respect to which a Gross-Up
Payment would be payable hereunder and the Executive shall be entitled to settle
or contest, as the case may be, any other issue raised by the Internal Revenue
Service or other taxing authority.

            (d) If, after the receipt by the Executive of an amount advanced by
the Company pursuant to Section 9(c), the Executive becomes entitled to receive
any refund with respect to such claim, the Executive shall (subject to the
Company's complying with the requirements of Section 9(c)) promptly pay to the
Company the amount of such refund (together with any interest paid or credited
thereon after taxes applicable thereto). If, after the receipt by the Executive
of an amount advanced by the Company pursuant to Section 9(c), a determination
is made that the Executive shall not be entitled to any refund with respect to
such claim and the Company does not notify the Executive in writing of its
intent to contest such denial of refund prior to the expiration of 30 days after
such determination, then such advance shall be forgiven and shall not be
required to be repaid and the amount of such advance shall offset, to the extent
thereof, the amount of Gross-Up Payment required to be paid.

         10. CONFIDENTIAL INFORMATION. The Executive shall hold in a fiduciary
capacity for the benefit of the Company all secret or confidential information,
knowledge or data relating to the Company or any of its affiliated companies,
and their respective businesses, which shall have been obtained by the Executive
during the Executive's employment by the Company or any of its affiliated
companies and which shall not be or become public knowledge (other than by acts
by the Executive or representatives of the Executive in violation of this
Agreement). After termination of the Executive's employment with the Company,
the Executive shall not, without the prior written consent of the Company or as
may otherwise be required by law or legal process, communicate or divulge any
such information, knowledge or data to anyone other than

                                      -13-
<PAGE>

the Company and those designated by it. In no event shall an asserted violation
of the provisions of this Section 10 constitute a basis for deferring or
withholding any amounts or benefits otherwise payable or to be provided to the
Executive under this Agreement.

         11. SUCCESSORS.

            (a) This Agreement is personal to the Executive and without the
prior written consent of the Company shall not be assignable by the Executive
otherwise than by will or the laws of descent and distribution. This Agreement
shall inure to the benefit of and be enforceable by the Executive's legal
representatives.

            (b) This Agreement shall inure to the benefit of and be binding upon
the Company and its successors and assigns.

            (c) The Company will require any successor (whether direct or
indirect, by purchase, merger, consolidation or otherwise) to all or
substantially all of the business and/or assets of the Company to assume
expressly and agree to perform this Agreement in the same manner and to the same
extent that the Company would be required to perform it if no such succession
had taken place. As used in this Agreement, "Company" shall mean the Company as
hereinbefore defined and any successor to its business and/or assets as
aforesaid.

         12. MISCELLANEOUS.

            (a) This Agreement shall be governed by and construed in accordance
with the laws of the State of Delaware, without reference to principles of
conflict of laws. The captions of this Agreement are not part of the provisions
hereof and shall have no force or effect. This Agreement may not be amended or
modified otherwise than by a written agreement executed by the parties hereto or
their respective successors and legal representatives.

            (b) All notices and other communications hereunder shall be in
writing and shall be given by hand delivery to the other party or by registered
or certified mail, return receipt requested, postage prepaid, addressed as
follows:

                  IF TO THE EXECUTIVE:

                  Name of Executive
                  c/o Open Market, Inc.
                  One Wayside Road
                  Burlington MA 01803

                                      -14-
<PAGE>

                  IF TO THE COMPANY:

                  Open Market, Inc.
                  One Wayside Road
                  Burlington, MA 01803
                  Attention: Chairman of Compensation Committee

or to such other address as either party shall have furnished to the other in
writing in accordance herewith. Notice and communications shall be effective
when actually received by the addressee.

            (c) The invalidity or unenforceability of any provision of this
Agreement shall not affect the validity or enforceability of any other provision
of this Agreement.

            (d) The Company may withhold from any amounts payable under this
Agreement such Federal, state, local or foreign taxes as shall be required to be
withheld pursuant to any applicable law or regulation.

            (e) The Executive's or the Company's failure to insist upon strict
compliance with any provision of this Agreement or the failure to assert any
right the Executive or the Company may have hereunder, including, without
limitation the right of the Executive to terminate employment for Good Reason
pursuant to Section 5(c) of this Agreement, shall not be deemed to be a waiver
of such provision or right or any other provision or right of this Agreement.

            (f) The Executive and the Company acknowledge that, except as may
otherwise be provided under any other written agreement between the Executive
and the Company, the employment of the Executive by the Company as well as the
Executive's status as a Corporate Officer is "at will" and, subject to Section
1(a) hereof, prior to the Effective Date, the Executive's employment, the
Executive's status as a Corporate Officer and/or this Agreement may be
terminated by either the Executive or the Company, by written notice to the
other, at any time prior to the Effective Date, in which case the Executive
shall have no further rights or obligations under this Agreement. From and after
the Effective Date this Agreement shall supersede any other agreement between
the parties with respect to the subject matter hereof.

            (g) Any dispute or controversy arising under or in connection with
this Agreement shall be settled exclusively by arbitration, conducted before a
panel of three arbitrators in Boston, Massachusetts, in accordance with the
rules of the American Arbitration Association then in effect. Judgment may be
entered on the arbitrator's award in any court of competent jurisdiction.

                                      -15-
<PAGE>

         IN WITNESS WHEREOF, the Executive has hereunto set the Executive's hand
and, pursuant to the authorization from its Board of Directors, the Company has
caused these presents to be executed in its name on its behalf, all as of the
day and year first above written.

                                             /s/ Ed Durkin
                                             ----------------------------------
                                             Ed Durkin

                                             Open Market, Inc.

                                             By: /s/ Harland Lavigne
                                                 ------------------------------
                                             Harland LaVigne
                                             Its: Chief Executive Officer


                                      -16-