Document:

<PAGE>

                             STOCK PLEDGE AGREEMENT

         THIS STOCK PLEDGE AGREEMENT (the "Agreement"), dated March 21, 2000, is
made and entered into by and between U.S. INTERACTIVE, INC., a Delaware
corporation ("Pledgor"), with reference to the capital stock or other interests
of the Companies set forth on Schedule A hereto (each a "Company" and
collectively the "Companies"), and PNC BANK, NATIONAL ASSOCIATION, as Agent for
itself and the other Banks under the Credit Agreement described below (the
"Secured Party").

         WHEREAS, pursuant to that certain Credit Agreement (as from time to
time restated, amended, modified or supplemented, the "Credit Agreement") dated
this date by and among the Pledgor (as a Borrower), the Banks party thereto, and
the Secured Party, the Secured Party and the Banks have agreed to provide
certain loans and other financial accommodations to Pledgor; and

         WHEREAS, pursuant to and in consideration of the Credit Agreement,
certain of the issued and outstanding capital stock of each of the Companies is
to be pledged to the Secured Party in accordance herewith; and

         WHEREAS, Pledgor owns the outstanding capital stock of the Companies as
set forth on Schedule A hereto.

         NOW, THEREFORE, intending to be legally bound hereby, the parties
hereto hereby agree as follows:

1. Defined Terms.

         (a) Except as otherwise expressly provided herein, capitalized terms
used in this Agreement shall have the respective meanings assigned to them in
the Credit Agreement. Where applicable and except as otherwise expressly
provided herein, terms used herein (whether or not capitalized) shall have the
respective meanings assigned to them in the Uniform Commercial Code as enacted
in Pennsylvania as amended from time to time (the "Code").

         (b) "Pledged Collateral" shall mean and include the following: (i) the
capital stock, shares, securities and all other ownership interests listed on
Schedule A attached hereto and made a part hereof, and all rights and privileges
pertaining thereto, including, without limitation, all present and future
securities, shares, capital stock and other ownership interests receivable in
respect of or in exchange for any such securities, shares, capital stock or
ownership interests, all rights under shareholder agreements and other similar
agreements relating to all securities, shares, capital stock and other ownership
interests, all rights to subscribe for securities, shares, capital stock or
other ownership interests incident to or arising from ownership of such
securities, shares, capital stock or other ownership interests, all cash,
interest, stock and other dividends or distributions paid or payable on such
securities, shares, capital stock or other ownership interests, and all books
and records (whether paper, electronic or any other medium) pertaining to the
foregoing, including, without limitation, all stock record and transfer books,
(ii) any and all other securities, shares, capital stock and other ownership
interests hereafter pledged by Pledgor to the Secured Party to secure the
Secured Obligations (as hereinafter defined), and all rights and privileges
pertaining thereto, including, without limitation, all securities, shares,
capital stock and other ownership interests receivable in respect of or in
exchange for such securities, shares, capital stock or other ownership
interests, all rights to subscribe for securities, shares, capital stock or
other ownership interests incident to or arising from ownership of such
securities, shares, capital stock or other ownership interests, all cash,
interest, stock and other dividends or distributions paid or payable on such
securities, shares, capital stock or other ownership interests, and all books
and records pertaining to the foregoing, and (iii) whatever is received when any
of the foregoing is sold, exchanged, replaced or otherwise disposed of,
including all proceeds, as such term is defined in the Code, thereof.

2. Grant of Security Interests.

         (a) To secure the payment and performance of all Obligations and of all
Indebtedness of Borrower under any Loan Document or any other agreement with any
Bank or any Affiliate of any Bank (collectively, the "Secured Obligations"),
Pledgor hereby grants to the Secured Party a first priority security interest in
and hereby pledges to Agent, in each case for the benefit of each of the Banks
and Agent and any Affiliate of any of the Banks, all of Pledgor's now existing
and hereafter acquired or arising right, title and interest in, to and under the
Pledged Collateral whether now or hereafter existing and wherever located.

<PAGE>

         (b) Upon the execution and delivery of this Agreement, Pledgor shall
deliver to and deposit with the Secured Party in pledge, all stock certificates
and other instruments evidencing the Pledged Collateral owned by Pledgor,
together with undated stock powers signed in blank by Pledgor. The stock powers
delivered by Pledgor hereunder shall be utilized by Secured Party only after an
Event of Default has occurred.

3. Further Assurances.

         Prior to or concurrently with the execution of this Agreement, and
thereafter at any time and from time to time upon reasonable request of the
Secured Party, Pledgor shall execute and deliver to the Secured Party all
financing statements, continuation financing statements, assignments,
certificates and documents of title, affidavits, reports, notices, schedules of
account, letters of authority, further pledges, powers of attorney and all other
documents (collectively, the "Security Documents") which the Secured Party may
reasonably request, in form reasonably satisfactory to the Secured Party, and
take such other action which the Secured Party may reasonably request, to
perfect and continue perfected and to create and maintain the first priority
status of the Secured Party's security interest in the Pledged Collateral and to
fully consummate the transactions contemplated under this Agreement. If an Event
of Default has occurred and is continuing, Pledgor hereby irrevocably makes,
constitutes and appoints the Secured Party (and any of the Secured Party's
officers or employees or agents designated by the Secured Party) as Pledgor's
true and lawful attorney with power to sign the name of Pledgor on all or any of
the Security Documents which the Secured Party determines must be executed,
filed, recorded or sent in order to perfect or continue perfected the Secured
Party's security interest in the Pledged Collateral in any jurisdiction. Such
power, being coupled with an interest, is irrevocable until all of the Secured
Obligations have been indefeasibly in full paid and the Commitments have
terminated.

4. Representations and Warranties.

         Pledgor hereby represents and warrants to the Secured Party as follows:

         (a) Pledgor, has and will continue to have (or, in the case of
after-acquired Pledged Collateral, at the time Pledgor acquires rights in such
Pledged Collateral, will have and will continue to have), title to its Pledged
Collateral, free and clear of all Liens.

         (b) The capital stock shares, securities, and other ownership interests
constituting the Pledged Collateral have been duly authorized and validly issued
to Pledgor (as set forth on Schedule A hereto), are fully paid and nonassessable
and constitute one hundred percent (100%) of the issued and outstanding capital
stock of each of the Companies.

         (c) The security interests in the Pledged Collateral granted hereunder
are valid, perfected and of first priority, subject to the Lien of no other
Person.

         (d) There are no restrictions upon the transfer of the Pledged
Collateral other than applicable state and federal securities laws and Pledgor
has the power and authority and right to transfer the Pledged Collateral owned
by Pledgor free of any encumbrances and without obtaining the consent of any
other Person.

         (e) Pledgor has all necessary power to execute, deliver and perform
this Agreement.

         (f) There are no actions, suits, or proceedings pending or, to
Pledgor's best knowledge after due inquiry, threatened against or affecting
Pledgor with respect to the Pledged Collateral, at law or in equity or before or
by any Official Body, and Pledgor is not in default with respect to any
judgment, writ, injunction, decree, rule or regulation which would materially
adversely affect Pledgor's performance hereunder.

         (g) This Agreement has been duly executed and delivered and constitutes
the valid and legally binding obligation of Pledgor, enforceable in accordance
with its terms, except to the extent that enforceability of this Agreement may
be limited by applicable bankruptcy, insolvency, reorganization, moratorium or
other similar Laws affecting the enforceability of creditors' rights generally
or limiting the right of specific performance.

                                      -2-

<PAGE>

         (h) Neither the execution and delivery by Pledgor of this Agreement,
nor the compliance with the terms and provisions hereof, will violate any
provision of any Law or conflict with or result in a breach of any of the terms,
conditions or provisions of any judgment, order, injunction, decree or ruling of
any Official Body to which Pledgor is subject or any provision of any agreement,
understanding or arrangement to which Pledgor is a party or by which Pledgor is
bound.

         (i) Pledgor's chief executive office address is as set forth on the
signature page hereto.

         (j) All rights of Pledgor in connection with its ownership of each of
the Companies are evidenced and governed solely by the stock certificates, and
Pledgor has provided true and correct copies of its organizational documents
applicable to any of the Pledged Collateral.

5. General Covenants.

         Pledgor hereby covenants and agrees as follows:

         (a) Subject to Section 7.2.6 of the Credit Agreement, Pledgor shall do
all reasonable acts that may be necessary and appropriate to maintain, preserve
and protect the Pledged Collateral; Pledgor shall be responsible for the risk of
loss of, damage to, or destruction of the Pledged Collateral owned by Pledgor,
unless such loss is the result of the gross negligence or willful misconduct of
the Secured Party. Pledgor shall notify the Secured Party in writing ten (10)
days prior to any change in Pledgor's chief executive office address.

         (b) Pledgor shall appear in and defend any action or proceeding of
which Pledgor is aware which would reasonably be expected to affect Pledgor's
title to, or the Secured Party's interest in, the Pledged Collateral or the
proceeds thereof; provided, however, that with the consent of the Secured Party
such Pledgor may settle such actions or proceedings with respect to the Pledged
Collateral, which consent shall not be unreasonably withheld or delayed.

         (c) Pledgor shall, and shall cause each of the Companies to, keep
separate, accurate and complete records of the Pledged Collateral, disclosing
the Secured Party's security interest hereunder.

         (d) Pledgor shall comply with all Laws applicable to the Pledged
Collateral unless any noncompliance would not individually or in the aggregate
materially impair the use or value of the Pledged Collateral or the Secured
Party's rights hereunder.

         (e) Pledgor shall pay any and all taxes, duties, fees or imposts of any
nature imposed by any Official Body on any of the Pledged Collateral, except to
the extent contested in good faith by appropriate proceedings or subject to
extensions timely requested and granted.

         (f) Pledgor shall permit the Secured Party, its officers, employees and
agents at reasonable times during normal business hours upon reasonable advance
notice to inspect all books and records related to the Pledged Collateral.

         (g) To the extent, following the date hereof, Pledgor acquires capital
stock, shares securities, and other ownership interests of any of the Companies
or any of the rights, property or securities, shares, capital stock or other
ownership interests described in the definition of Pledged Collateral with
respect to any of the Companies, such stock, rights, property or securities,
shares, capital stock or ownership interests shall be subject to the terms
hereof and, upon such acquisition, shall be deemed to be hereby pledged to the
Secured Party; and, Pledgor thereupon shall deliver all such securities, shares,
capital stock, and other ownership interests together with an updated Schedule A
hereto, to the Secured Party.

         (h) During the term of this Agreement, Pledgor shall not sell, assign,
replace, retire, transfer or otherwise dispose of its Pledged Collateral other
than in accordance with the Credit Agreement.

6. Other Rights With Respect to Pledged Collateral.

         In addition to the other rights with respect to the Pledged Collateral
granted to the Secured Party hereunder, at any time and from time to time, after
and during the continuation of an Event of Default, the Secured Party, at its

                                      -3-

<PAGE>

option and at the expense of the Pledgor, may (a) transfer into its own name, or
into the name of its nominee, all or any part of the Pledged Collateral,
thereafter receiving all dividends, income or other distributions upon the
Pledged Collateral; (b) take control of and manage all or any of the Pledged
Collateral; (c) apply to the payment of any of the Secured Obligations, whether
any be due and payable or not, any moneys, including cash dividends and income
from any Pledged Collateral, now or hereafter in the hands of the Secured Party
or any Affiliate of the Secured Party, on deposit or otherwise, belonging to
Pledgor, as the Secured Party in its sole discretion shall determine; and (d) do
anything which Pledgor is required but fails to do hereunder.

7. Additional Remedies Upon Event of Default.

         Upon the occurrence of any Event of Default and while such Event of
Default shall be continuing, the Secured Party shall have, in addition to all
rights and remedies of a secured party under the Code or other applicable Law,
and in addition to its rights under Section 6 above and under the other Loan
Documents, the following rights and remedies:

         (a) The Secured Party may, after fifteen (15) days' advance notice to
the Pledgor, sell, assign, give an option or options to purchase or otherwise
dispose of Pledgor's Pledged Collateral or any part thereof at public or private
sale, at any of the Secured Party's offices or elsewhere, for cash, on credit or
for future delivery, and upon such other terms as the Secured Party may deem
commercially reasonable. Pledgor agrees that fifteen (15) days' advance notice
of the time and place of any public sale or the time after which any private
sale is to be made shall constitute reasonable notification. The Secured Party
shall not be obligated to make any sale of Pledged Collateral regardless of
notice of sale having been given. The Secured Party may adjourn any public or
private sale from time to time by announcement at the time and place fixed
therefor, and such sale may, without further notice, be made at the time and
place to which it was so adjourned. Pledgor recognizes that the Secured Party
may be compelled to resort to one or more private sales of the Pledged
Collateral to a restricted group of purchasers who will be obliged to agree,
among other things, to acquire such securities, shares, capital stock or
ownership interests for their own account for investment and not with a view to
the distribution or resale thereof.

         (b) The proceeds of any collection, sale or other disposition of the
Pledged Collateral, or any part thereof, shall, after the Secured Party has made
all deductions of expenses, including but not limited to attorneys' fees and
other expenses incurred in connection with repossession, collection, sale or
disposition of such Pledged Collateral or in connection with the enforcement of
the Secured Party's rights with respect to the Pledged Collateral, including in
any insolvency, bankruptcy or reorganization proceedings, be applied against the
Secured Obligations, whether or not all the same be then due and payable, as
follows:

                  (i) first, to the Secured Obligations and to reimburse the
Secured Party for out-of-pocket costs, expenses and disbursements, including
without limitation reasonable attorneys' fees and legal expenses, incurred by
the Secured Party in connection with realizing on the Pledged Collateral or
collection of any obligation of Pledgor under any of the Loan Documents,
including advances made subsequent to an Event of Default by the Secured Party
for the reasonable maintenance, preservation, protection or enforcement of, or
realization upon, the Pledged Collateral, including without limitation advances
for taxes, insurance, and the like, and reasonable expenses incurred to sell or
otherwise realize on, or prepare for sale of or other realization on, any of the
Pledged Collateral, in such order as the Secured Party may determine in its
discretion; and

                  (ii) the balance, if any, as required by Law.

8. Secured Party's Duties.

         The powers conferred on the Secured Party hereunder are solely to
protect its interest in the Pledged Collateral and shall not impose any duty
upon it to exercise any such powers. Except for the safe custody of any Pledged
Collateral in its possession and the accounting for moneys actually received by
it hereunder or on its behalf, the Secured Party shall have no duty as to any
Pledged Collateral or as to the taking of any necessary steps to preserve rights
against prior parties or any other rights pertaining to any Pledged Collateral.

9. No Waiver; Cumulative Remedies.

         No failure to exercise, and no delay in exercising, on the part of the
Secured Party, any right, power or privilege hereunder shall operate as a waiver
thereof; nor shall any single or partial exercise of any right, power or

                                      -4-

<PAGE>

privilege hereunder preclude any further exercise thereof or the exercise of any
other right, power or privilege. The remedies herein provided are cumulative and
not exclusive of any remedies provided under the other Loan Documents or by Law.
Pledgor waives any right to require the Secured Party to proceed against any
other Person or to exhaust any of the Pledged Collateral or other security for
the Secured Obligations or to pursue any remedy in the Secured Party's power.

10. Assignment.

         All rights of the Secured Party under this Agreement shall inure to the
benefit of its successors and assigns. All obligations of Pledgor shall bind its
successors and assigns; provided, however, Pledgor may not assign or transfer
any of its rights and obligations hereunder or any interest herein.

11. Severability.

         Any provision of this Agreement which shall be held invalid or
unenforceable shall be ineffective without invalidating the remaining provisions
hereof.

12. Governing Law.

         This Agreement shall be construed in accordance with and governed by
the internal laws of the Commonwealth of Pennsylvania without regard to its
conflicts of law principles, except to the extent the validity or perfection of
the security interests or the remedies hereunder in respect of any Pledged
Collateral are governed by the law of a jurisdiction other than the Commonwealth
of Pennsylvania.

13. Notices.

         All notices, statements, requests and demands given to or made upon
either party hereto in accordance with the provisions of this Agreement shall be
given or made as provided in Section 10.6 of the Credit Agreement.

14. Specific Performance.

         Pledgor acknowledges and agrees that, in addition to the other rights
of the Secured Party hereunder and under the other Loan Documents, because the
Secured Party's remedies at law for failure of Pledgor to comply with the
provisions hereof relating to the Secured Party's rights (i) to inspect the
books and records related to the Pledged Collateral, (ii) to receive the various
notifications Pledgor is required to deliver hereunder, (iii) to obtain copies
of agreements and documents as provided herein with respect to the Pledged
Collateral, (iv) to enforce the provisions hereof pursuant to which the Pledgor
has appointed the Secured Party its attorney-in-fact, and (v) to enforce the
Secured Party's remedies hereunder, would be inadequate and that any such
failure would not be adequately compensable in damages, Pledgor agrees that each
such provision hereof may be specifically enforced.

15. Voting Rights in Respect of the Pledged Collateral.

         So long as no Event of Default shall occur and be continuing under the
Credit Agreement, Pledgor may exercise any and all voting and other consensual
rights pertaining to the Pledged Collateral or any part thereof for any purpose
not inconsistent with the terms of this Agreement or the other Loan Documents;
provided, however, that Pledgor will not exercise or will refrain from
exercising any such voting and other consensual right pertaining to the Pledged
Collateral, as the case may be, if such action would have a material adverse
effect on the value of any Pledged Collateral. Without limiting the generality
of the foregoing and in addition thereto except as otherwise permitted in the
Credit Agreement, the Pledgor shall not vote to enable, or take any other action
to permit, any of the Companies to issue any stock or other equity securities or
other ownership interests of any nature or to issue any other securities,
shares, capital stock or other ownership interests convertible into or granting
the right to purchase or exchange for any stock or other equity securities or
other ownership interests of any nature of any such Company or to enter into any
agreement or undertaking restricting the right or ability of the Pledgor or the
Secured Party to sell, assign or transfer any of the Pledged Collateral.

                                      -5-

<PAGE>

16. Consent to Jurisdiction.

         Pledgor and each of the Companies hereby irrevocably submits to the
nonexclusive jurisdiction of any Pennsylvania State or Federal Court sitting in
Philadelphia, Pennsylvania, in any action or proceeding arising out of or
relating to this Agreement, and Pledgor and each of the Companies hereby
irrevocably agree that all claims in respect of such action or proceeding may be
heard and determined in such Pennsylvania State or Federal court. Pledgor and
each of the Companies hereby waives to the fullest extent it may effectively do
so, the defense of an inconvenient forum to the maintenance of any such action
or proceeding. Pledgor and each of the Companies hereby appoints the process
agent identified below (the "Process Agent") as its agent to receive on behalf
of such party and its respective property service of copies of the summons and
complaint and any other process which may be served in any action or proceeding.
Such service may be made by mailing or delivering a copy of such process to the
Pledgor or the Companies in care of the Process Agent at the Process Agent's
address, and the Pledgor and the Companies hereby authorize and direct the
Process Agent to receive such service on its behalf. Pledgor and each of the
Companies agree that a final judgment in any such action or proceeding shall be
conclusive and may be enforced in other jurisdictions (or any political
subdivision thereof) by suit on the judgment or in any other manner provided by
law. Pledgor and each of the Companies further agree that it shall, for so long
as any Commitment or any obligation of any Borrower to the Bank remains
outstanding, continue to retain Process Agent for the purposes set forth in this
Section 16. The Process Agent is U.S. Interactive, Inc., c/o General Counsel,
with an office on the date hereof at 2012 Renaissance Boulevard, King of
Prussia, Pennsylvania, United States. Pledgor and each of the Companies shall
produce to Secured Party evidence of the acceptance by Process Agent of such
appointment.

17. Waiver of Jury Trial.

         EXCEPT AS PROHIBITED BY LAW, PLEDGOR AND EACH OF THE COMPANIES HEREBY
WAIVE ANY RIGHT IT MAY HAVE TO A TRIAL BY A JURY IN RESPECT OF ANY LITIGATION
DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER, OR IN CONNECTION WITH THIS
AGREEMENT OR ANY OTHER DOCUMENTS OR TRANSACTIONS RELATING THERETO.

18. Entire Agreement; Amendments.

         This Agreement constitutes the entire agreement between the parties
with respect to the subject matter hereof and supersedes all prior agreements
relating to a grant of a security interest in the Pledged Collateral by Pledgor.
This Agreement may not be amended or supplemented except by a writing signed by
the Secured Party and the Pledgor.

19. Counterparts.

         This Agreement may be executed in any number of counterparts, and by
different parties hereto in separate counterparts, each of which when so
executed shall be deemed an original and all of which taken together shall
constitute but one and the same agreement.

20. Descriptive Headings

         The descriptive headings which are used in this Agreement are for the
convenience of the parties only and shall not affect the meaning of any
provision of this Agreement.

                                      -7-

<PAGE>

                            SIGNATURE PAGE 1 OF 1 TO
                             STOCK PLEDGE AGREEMENT

         IN WITNESS WHEREOF, and intending to be legally bound, the parties
hereto have caused this Agreement to be duly executed as of the date first above
written.

                          PNC BANK, NATIONAL ASSOCIATION, as Agent

                           By:
                              -------------------------------------------
                           Name:
                           Title:

                           U.S. INTERACTIVE, INC.

                           By:                                            (Seal)
                              -------------------------------------------
                           Name:
                           Title:

                           Chief Executive Office:
                           ----------------------
                           ----------------------
                           ----------------------

<PAGE>

                           ACKNOWLEDGEMENT AND CONSENT

         Each of the undersigned hereby acknowledges receipt of a copy of the
Pledge Agreement, dated March 21, 2000, made by U.S. Interactive, Inc. for the
benefit of PNC Bank, National Association, as Agent, as Secured Party (the
"Pledge Agreement"). Each of the undersigned, intending to be legally bound
hereby, agrees for the benefit of the Secured Party and the Banks as follows:

         1. Each of the undersigned will be bound by the terms of the Pledge
Agreement and will comply with such terms insofar as such terms are applicable
to the undersigned, including without limiting the generality of the foregoing,
those terms in Sections 16 and 17 of the Pledge Agreement.

         2. Each of the undersigned will notify the Secured Party promptly in
writing of the occurrence of any of the events described in Section 5(g) of the
Pledge Agreement.

         3. The terms of Section 3 of the Pledge Agreement shall apply to it,
mutatis mutandis, with respect to all actions that may facilitate, in the
reasonable judgment of the Secured Party, the carrying out of Section 3 of the
Pledge Agreement.

         4. To the extent that any of undersigned has or hereafter may acquire
any immunity from the jurisdiction of any court or from any legal process
(whether through service or notice, attachment prior to judgment, attachment in
aid of execution, execution, or otherwise) with respect to itself or its
property, each of undersigned hereby irrevocably waives such immunity in respect
of its obligations under the Pledge Agreement and any other document or
agreement executed in connection therewith, and each of undersigned agrees that
it will not raise or claim any such immunity at or in respect of any such action
or proceeding.

         5. Each of the undersigned acknowledges and agrees that any notices
sent to the Pledgor regarding any of the Pledged Collateral shall also be sent
to the Secured Party in the manner and at the address of Secured Party as
indicated in Section 13 of the Pledge Agreement.

                                     U.S. INTERACTIVE CORP. (DELAWARE)

                                     By:
                                        ----------------------------------------
                                     Name:
                                          --------------------------------------
                                     Title:
                                           -------------------------------------

                                     Address for Notices:
                                     ---------------------------
                                     ---------------------------
                                     Fax:_______________________

<PAGE>

                                   SCHEDULE A
                                       TO
                             STOCK PLEDGE AGREEMENT

                        Description of Pledged Collateral

<TABLE>
<CAPTION>

                Pledgor           Pledged Shares                  Type and Amount of Ownership
                -------           --------------                  ----------------------------
<S>                         <C>                                  <C>
U.S. Interactive, Inc.      100% of the issued and outstanding   100 shares of common stock, $.01
                            capital shares of U.S.               par value
                            INTERACTIVE CORP.
                            (DELAWARE), a Delaware
                            corporation
</TABLE><PAGE>

                               SECURITY AGREEMENT

         THIS SECURITY AGREEMENT (the "Agreement"), dated March 21, 2000 is
entered into by and between U.S. INTERACTIVE, INC., a Delaware corporation (the
"Borrower"), and PNC BANK, NATIONAL ASSOCIATION, as Agent (the "Agent") for the
Banks (as defined below);

                                WITNESSETH THAT:

         WHEREAS, the Borrower is (or will be with respect to after-acquired
property) the legal and beneficial owner and the holder of the Collateral (as
defined in Section 1 hereof); and

         WHEREAS, pursuant to that certain Credit Agreement (as it may hereafter
from time to time be restated, amended, modified or supplemented, the "Credit
Agreement") of even date herewith by and among the Agent, the Banks party
thereto (the "Banks") and the Borrower, the Agent and the Banks have agreed to
make certain loans to the Borrower; and

         WHEREAS, the obligation of the Banks to make loans under the Credit
Agreement is subject to the condition, among others, that the Borrower secure
its obligations to the Banks under the Credit Agreement in the manner set forth
herein.

         NOW, THEREFORE, intending to be legally bound hereby, the parties
hereto covenant and agree as follows:

         1. Terms which are defined in the Credit Agreement and not otherwise
defined herein are used herein as defined therein. The following words and terms
shall have the following meanings, respectively, unless the context hereof
otherwise clearly requires:

            (a) "Code" means the Uniform Commercial Code of each state as in
effect on the date hereof and as the same may subsequently be amended from time
to time, the substantive provisions of which are applicable to any of the
property of the Borrower in which the Agent for the benefit of the Banks is
granted a security interest pursuant to this Agreement.

            (b) "Collateral" means all of the Borrower's right, title and
interest in, to and under the following described property of the Borrower (each
capitalized term used in this Section 1(b) shall have in this Agreement the
meaning given to it by Article 9 of the Code as in effect in Pennsylvania):

                (i) all now existing and hereafter acquired and arising
Accounts, General Intangibles, Chattel Paper, Documents, Instruments, Investment
Property, Letters of Credit, Advices of Credit, Equipment, and Inventory, all
Products of and Accessions to the foregoing and all Proceeds of all of the
foregoing (including without limitation all insurance policies and proceeds
thereof);

                (ii) to the extent, if any, not included in clause (i) above,
each and every other item of personal property and fixtures, both those that are
now owned and those that hereafter arise or are acquired, regardless of whether
Article 9 of the Code is applicable to any extent to the creation, perfection or
enforcement of Liens thereon or therein.

Without limiting the foregoing, Collateral includes all business records and
information, including computer tapes and other storage media containing the
<PAGE>

same and computer programs and software (including without limitation, source
code, object code and related manuals and documentation and all licenses to use
such software) for accessing and manipulating such information.

            (c) "Debt" means, collectively, all now existing and hereafter
arising Indebtedness and Obligations of the Borrower to the Banks or any
Affiliate of any Bank under the Credit Agreement and other Loan Documents,
including without limitation, all Indebtedness and Obligations, whether of
principal, interest, fees, expenses or otherwise, of the Borrower to the Banks
or any Affiliate of any Bank now existing or hereafter incurred under the Credit
Agreement or the Notes), or any of the other Loan Documents referred to therein
as any of the same or any one or more of them may from time to time be amended,
restated, modified or supplemented, together with any and all extensions,
renewals, refinancings or refundings thereof in whole or in part.

            (d) "Receivables" means all of the Collateral except Equipment and
Inventory.

         2. As security for the due and punctual payment and performance of the
Debt in full, the Borrower hereby agrees that the Agent and the Banks and any
Affiliate of any Bank shall have, and the Borrower hereby grants to and creates
in favor of the Agent for the benefit of the Banks and any Affiliate of any
Bank, a first priority security interest under the Code in and to the Collateral
subject only to Permitted Liens. Without limiting the generality of Section 4
below, the Borrower further agrees that with respect to each item of Collateral
as to which (i) the creation of a valid and enforceable security interest is not
governed exclusively by the Code or (ii) the perfection of a valid and
enforceable security interest therein under the Code cannot be accomplished
either by the Agent taking possession thereof or by the filing in appropriate
locations of appropriate Code financing statements executed by the Borrower, the
Borrower will at its expense execute and deliver to the Agent such documents,
agreements, notices, assignments and instruments and take such further actions
as may be reasonably requested by the Agent from time to time for the purpose of
creating a valid and perfected first priority Lien on such item, subject only to
Permitted Liens, enforceable against the Borrower and all third parties to
secure the Debt.

         3. The Borrower represents and warrants to the Agent and the Banks that
(a) the Borrower has good and marketable title to the Collateral, and (b) except
for the security interest granted to and created in favor of the Agent for the
benefit of the Banks hereunder and Permitted Liens, all the Collateral is free
and clear of any Lien other than the Liens of record of Progress Bank against
Borrower that will be removed in connection with this transaction.

         4. The Borrower will faithfully preserve and protect the Agent's
security interest in the Collateral as a prior perfected security interest under
the Code, superior and prior to the rights of all third Persons, except for
Permitted Liens, and will do all such other acts and things and will, upon
request therefor by the Agent, execute, deliver, file and record all such other
documents and instruments, including, without limitation, financing statements,
security agreements, assignments and documents and powers of attorney with
respect to the Collateral, and pay all filing fees and taxes related thereto, as
the Agent in its reasonable discretion may deem necessary or advisable from time
to time in order to attach, continue, preserve, perfect and protect said
security interest; and the Borrower hereby irrevocably appoints the Agent, its
officers, employees and agents, or any of them, as attorneys-in-fact for the
Borrower to execute, deliver, file and record such items for the Borrower and in
the Borrower's name, place and stead if an Event of Default has occurred and is
continuing. This power of attorney, being coupled with an interest, shall be
irrevocable for the life of this Agreement.

         5. The Borrower covenants and agrees that:

            (a) it will defend the Agent's and the Banks' right, title and
security interest in and to the Collateral and the proceeds thereof against the
claims and demands of all Persons whomsoever, other than any Person claiming a
right in the Collateral pursuant to an agreement between such Person and the
Agent or a Bank;

            (b) it will not suffer or permit to exist on any Collateral any Lien
except for Permitted Liens;

                                      -2-
<PAGE>

            (c) it will not take or omit to take any action, the taking or the
omission of which would result in a material alteration or impairment of the
Collateral or of the Agent's rights under this Agreement;

            (d) it will not sell, assign or otherwise dispose of any portion of
the Collateral except as permitted in the Credit Agreement;

            (e) except as permitted by the Credit Agreement, it will (i) obtain
and maintain sole and exclusive possession of the Collateral, (ii) keep the
Collateral and all records pertaining thereto at the locations specified on the
Security Interest Data Summary attached as Schedule A hereto, unless it shall
have given the Agent prior notice and taken any action reasonably requested by
the Agent to maintain its security interest therein, (iii) deliver to the Agent
upon the Agent's request therefor all Collateral consisting of Chattel Paper
immediately upon the Borrower's receipt of a request therefor, and (iv) keep
materially accurate and complete books and records concerning the Collateral and
such other books and records as the Agent may from time to time reasonably
require; and

            (f) it will promptly furnish to the Agent such information and
documents relating to the Collateral as the Agent may reasonably request,
including, without limitation, all invoices, Documents, contracts, Chattel
Paper, Instruments and other writings pertaining to the Borrower's contracts or
the performance thereof, all of the foregoing to be certified upon request of
the Agent by an authorized officer of the Borrower.

         6. The Borrower assumes full responsibility for taking any and all
necessary steps to preserve the Agent's and the Banks' rights with respect to
the Collateral against all Persons other than anyone asserting rights in respect
of a Permitted Lien. The Agent shall be deemed to have exercised reasonable care
in the custody and preservation of the Collateral in its possession if the Agent
takes such action for that purpose as the Borrower requests in writing, provided
that such requested action will not, in the judgment of the Agent, impair the
security interest in the Collateral created hereby or the Agent's and the Banks'
rights in, or the value of, the Collateral, and provided further that such
written request is received by the Agent in sufficient time to permit the Agent
to take the requested action.

         7. (a) At any time and from time to time whether or not an Event of
Default then exists and without prior notice to or consent of the Borrower, the
Agent may at its option take such actions as the Agent deems appropriate (i) to
attach, perfect, continue, preserve and protect the Agent's and the Banks' prior
security interest in the Collateral, and/or (ii) to inspect, audit and verify
the Collateral, including reviewing all of the Borrower's books and records and
copying and making excerpts therefrom, provided that prior to an Event of
Default or a Potential Default, the same is done with advance notice during
normal business hours to the extent access to the Borrower's premises is
required, and if not paid in a timely fashion by Borrower, (iii) to add all
liabilities, obligations, costs and expenses reasonably incurred in connection
with the foregoing clauses (i) and (ii) to the Debt, to be paid by the Borrower
to the Agent for the benefit of the Banks upon demand;

            (b) At any time and from time to time after an Event of Default
exists and is continuing and without prior notice to or consent of the Borrower,
the Agent may at its option take such action as the Agent, in its reasonable
discretion, deems appropriate (i) to maintain, repair, protect and insure the

                                      -3-
<PAGE>

Collateral, and/or (ii) to perform, keep, observe and render true and correct
any and all covenants, agreements, representations and warranties of the
Borrower hereunder, and (iii) to add all liabilities, obligations, costs and
expenses reasonably incurred in connection with the foregoing clauses (i) and
(ii) to the Debt, to be paid by the Borrower to the Agent for the benefit of the
Banks upon demand.

         8. After there exists any Event of Default under the Credit Agreement:

            (a) The Agent shall have and may exercise all the rights and
remedies available to and subject to all of the obligations of a secured party
under the Code in effect at the time, and such other rights and remedies as may
be provided by Law and as set forth below, including without limitation to take
over and collect all the Borrower's Receivables and all other Collateral, and to
this end the Borrower hereby appoints effective at such time, the Agent, its
officers, employees and agents, as its irrevocable, true and lawful
attorneys-in-fact with all necessary power and authority to (i) take possession
immediately, with or without notice, demand, or legal process, of any of or all
of the Collateral wherever found, and for such purposes, enter upon any premises
upon which the Collateral may be found and remove the Collateral therefrom, (ii)
require the Borrower to assemble the Collateral and deliver it to the Agent or
to any place designated by the Agent at the Borrower's expense, (iii) receive,
open and dispose of all mail addressed to the Borrower and notify postal
authorities to change the address for delivery thereof to such address as the
Agent may designate, (iv) demand payment of the Receivables, (v) enforce payment
of the Receivables by legal proceedings or otherwise, (vi) exercise all of the
Borrower's rights and remedies with respect to the collection of the
Receivables, (vii) settle, adjust, compromise, extend or renew the Receivables,
(viii) settle, adjust or compromise any legal proceedings brought to collect the
Receivables, (ix) to the extent permitted by applicable Law, sell or assign the
Receivables upon such terms, for such amounts and at such time or times as the
Agent deems advisable, (x) discharge and release the Receivables, (xi) take
control, in any manner, of any item of payment or proceeds from any account
debtor, (xii) prepare, file and sign the Borrower's name on any Proof of Claim
in Bankruptcy or similar document against any account debtor, (xiii) prepare,
file and sign the Borrower's name on any notice of Lien, assignment or
satisfaction of Lien or similar document in connection with the Receivables,
(xiv) do all acts and things necessary, in the Agent's reasonable and sole
discretion, to fulfill the Borrower's obligations under the Loan Documents, (xv)
endorse the name of the Borrower upon any check, Chattel Paper, Document,
Instrument, invoice, freight bill, bill of lading or similar document or
agreement relating to the Receivables or Inventory; (xvi) use the Borrower's
stationery and sign the Borrower's name to verifications of the Receivables and
notices thereof to account debtors; (xvii) access and use the information
recorded on or contained in any data processing equipment or computer hardware
or software relating to the Receivables, Inventory, or other Collateral or
proceeds thereof to which the Borrower has access, (xviii) demand, sue for,
collect, compromise and give acquittances for any and all Collateral, (xix)
prosecute, defend or compromise any action, claim or proceeding with respect to
any of the Collateral, and (xx) take such other action as the Agent may deem
appropriate, including extending or modifying the terms of payment of the
Borrower's debtors. This power of attorney, being coupled with an interest,
shall be irrevocable for the life of this Agreement. To the extent permitted by
Law, the Borrower hereby waives all claims of damages due to or arising from or
connected with any of the rights or remedies exercised by the Agent pursuant to
this Agreement, except claims for physical damage to the Collateral arising from
gross negligence or willful misconduct by the Agent or its employees or agents.

            (b) The Agent shall have the right to lease, sell or otherwise
dispose of all or any of the Collateral at public or private sale or sales for
cash, credit or any combination thereof, with such notice as may be required by
Law (it being agreed by the Borrower that, in the absence of any contrary
requirement of Law, fifteen (15) days' prior notice of a public or private sale
of Collateral shall be deemed reasonable notice), in lots or in bulk, for cash
or on credit, all as the Agent, in its reasonable and sole discretion, may deem
advisable. Such sales may be adjourned from time to time with or without notice.
The Agent shall have the right to conduct such sales on the Borrower's premises
or elsewhere and shall have the right to use the Borrower's premises without
charge for such sales for such time or times as the Agent may see fit. The Agent

                                      -4-
<PAGE>

may purchase all or any part of the Collateral at public or, if permitted by
Law, private sale and, in lieu of actual payment of such purchase price, may set
off the amount of such price against the Debt.

          9. The security interest in the Borrower's Collateral granted to and
created in favor of the Agent by this Agreement shall be for the benefit of the
Agent and the Banks. Each of the rights, privileges, and remedies provided to
the Agent hereunder or otherwise by Law with respect to the Borrower's
Collateral shall be exercised by the Agent only for its own benefit and the
benefit of the Banks, and any of the Borrower's Collateral or proceeds thereof
held or realized upon at any time by the Agent shall be applied as set forth in
Section 8.2.5 of the Credit Agreement. The Borrower shall remain liable to the
Banks for and shall pay to the Agent for the benefit of the Banks any deficiency
which may remain after such sale or collection.

         10. If the Agent repossesses or seeks to repossess any of the
Collateral pursuant to the terms hereof because of the occurrence of an Event of
Default. Borrower will cooperate with the Agent and grant the Agent reasonable
access to the Borrower's premises. In the event Borrower does not cooperate with
the Agent and grant the Agent reasonable access to the Borrower's premises, then
to the extent it is commercially reasonable for the Agent to store any
Collateral on any of the Borrower's premises, the Borrower hereby agrees to
lease to the Agent on a month-to-month tenancy for a period not to exceed one
hundred twenty (120) days at the Agent's election, at a rental of One Dollar
($1.00) per month, the premises on which the Collateral is located, provided it
is located on premises owned or leased by the Borrower.

         11. Upon indefeasible payment in full of the Debt and termination of
the Credit Agreement, this Agreement shall terminate and be of no further force
and effect, and the Agent shall thereupon promptly return to the Borrower such
of the Collateral and such other documents delivered by the Borrower hereunder
as may then be in the Agent's possession and Agent will terminate all financing
statements in connection with this transaction. Until such time, however, this
Agreement shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and permitted assigns.

         12. No failure or delay on the part of the Agent in exercising any
right, remedy, power or privilege hereunder shall operate as a waiver thereof or
of any other right, remedy, power or privilege of the Agent hereunder; nor shall
any single or partial exercise of any such right, remedy, power or privilege
preclude any other or further exercise thereof or the exercise of any other
right, remedy, power or privilege. No waiver of a single Event of Default shall
be deemed a waiver of a subsequent Event of Default. All waivers under this
Agreement must be in writing. The rights and remedies of the Agent under this
Agreement are cumulative and in addition to any rights or remedies which it may
otherwise have, and the Agent may enforce any one or more remedies hereunder
successively or concurrently at its option.

         13. All notices, statements, requests and demands given to or made upon
either party hereto in accordance with the provisions of this Agreement shall be
given or made as provided in Section 10.6 of the Credit Agreement.

         14. The Borrower agrees that as of the date hereof, all information
contained on the Security Interest Data Schedule attached hereto as Schedule A
is accurate and complete and contains no omission or misrepresentation. The
Borrower shall promptly notify the Agent of any changes in the information set
forth thereon.

         15. The Borrower acknowledges that the provisions hereof giving the
Agent rights of access to books, records and information concerning the
Collateral and the Borrower's operations and providing the Agent access to the
Borrower's premises are intended to afford the Agent with immediate access to

                                      -5-
<PAGE>

current information concerning the Borrower and its activities, including
without limitation, the value, nature and location of the Collateral so that the
Agent can, among other things, make an appropriate determination after the
occurrence of an Event of Default, whether and when to exercise its other
remedies hereunder and at Law, including without limitation, instituting a
replevin action should the Borrower refuse to turn over any Collateral to the
Agent. The Borrower further acknowledges that should the Borrower at any time
fail to promptly provide such information and access to the Agent, the Borrower
acknowledges that the Agent would have no adequate remedy at Law to promptly
obtain the same. The Borrower agrees that the provisions hereof may be
specifically enforced by the Agent and waives any claim or defense in any such
action or proceeding that the Agent has an adequate remedy at Law.

16. This Agreement shall be binding upon and inure to the benefit of the Agent,
the Banks and their respective successors and assigns, and the Borrower and its
successors and assigns, except that the Borrower may not assign or transfer the
Borrower's obligations hereunder or any interest herein.

17. This Agreement shall be deemed to be a contract under the laws of the
Commonwealth of Pennsylvania and for all purposes shall be governed by and
construed in accordance with the laws of said Commonwealth excluding its rules
relating to conflicts of law.

18. Any provision of this Agreement which is prohibited or unenforceable in any
jurisdiction shall not invalidate the remaining provisions hereof, and any such
prohibition or unenforceability in any jurisdiction shall not invalidate or
render unenforceable such provision in any other jurisdiction.

                            [SIGNATURE PAGE FOLLOWS]

                                      -6-
<PAGE>

                  [SIGNATURE PAGE 1 OF 1 TO SECURITY AGREEMENT]

         IN WITNESS WHEREOF, the parties hereto, by their officers thereunto
duly authorized, have executed and delivered this Agreement as of the day and
year first above set forth.

                                                U.S. INTERACTIVE, INC.

                                                By:_____________________________
                                                Name:
                                                Title:

                                                PNC BANK, NATIONAL ASSOCIATION,
                                                as Agent

                                                By:_____________________________
                                                Name:
                                                Title:
<PAGE>

                                   SCHEDULE A
                                       TO
                               SECURITY AGREEMENT

                         SECURITY INTEREST DATA SUMMARY

         1. The chief executive office of U.S. Interactive, Inc. (the "Debtor")
is located at:

                           2012 Renaissance Boulevard
                           King of Prussia, PA  19406
                           Montgomery County

         2. The Debtor's true and full name is: U.S. Interactive, Inc. The
Debtor uses no trade names or fictitious names.

         3. All of the Debtor's personal property which has not been delivered
to the Agent pursuant to the terms of this Agreement or the Credit Agreement is
now, and will be at all future times, located at the Debtor's chief executive
office as described in Paragraph 1 above, except as specified below:

                  CALIFORNIA:

                  18900 Stevens Creek Boulevard
                  Cupertino, CA  95014

                  [REMAINING ADDRESSES TO BE PROVIDED]

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