Document:

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                                  Exhibit 10.15

November 28, 2001

Mr. Timothy W. Kinnear

Re:  Resignation Agreement and General Release
     -----------------------------------------

Dear Tim:

In connection with your resignation as Chief Executive Officer and President of
Intrusion, Inc. (the "COMPANY") effective November 28, 2001 (the "TERMINATION
DATE"), the Company is offering you a severance package in exchange for your
agreement to release the Company from any and all claims (this "AGREEMENT"). The
details of the severance package and release are explained below. We encourage
you to review this document carefully and to discuss it with an attorney.

SEVERANCE.

In exchange for your execution of this Agreement, which includes your agreement
to release the Company from any and all claims, the Company agrees to provide
you with the following:

     -   Nine (9) months of salary continuation based on your current annual
         salary, less statutory deductions and withholdings, to be paid in
         accordance with the Company's normal payroll practices, for a total
         gross payment of $168,750.00, beginning on the first regular payroll
         after your execution of this Agreement (the "SEVERANCE PACKAGE").

     -   Your receipt of the Severance Package is expressly conditioned on your
         having first returned all Company property and all proprietary
         information in your possession to the Company.

By signing this Agreement, you acknowledge and agree that absent this Agreement,
you have no legal entitlement to the consideration provided herein and that the
consideration given to you represents good and sufficient value for the releases
and other agreements by you set forth in this Agreement.

STOCK EXERCISE.

Upon your Termination Date, you will cease vesting in your stock options. You
will have 90 days from your Termination Date to exercise any vested option
shares. The details of your stock options and exercise thereof will be according
to the Intrusion.com, Inc. 1995 Stock Option Plan, as amended.

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Timothy W. Kinnear                                                       Page 2
November 28, 2001

YOUR AGREEMENT.

By signing this Agreement and accepting the severance as outlined above, you
agree to waive, release, and forever discharge the Company and its parents,
successors, assigns, divisions, subsidiaries, affiliates, partners, officers,
directors, executives, investors, shareholders, managers, supervisors,
employees, agents, attorneys and representatives (the "RELEASED PARTIES") from
any and all claims, demands, and causes of action which you have or claim to
have, whether known or unknown, of whatever nature, which exists or may exist as
of the date of your execution of this Agreement. "Claims," "demands," and
"causes of action" include, but are not limited to, claims based on contract,
fraud, equity, tort, discrimination, harassment, retaliation, personal injury,
constructive discharge, emotional distress, public policy, wage and hour law,
defamation, claims for debts, accounts, attorneys' fees, compensatory damages,
punitive damages, and/or liquidated damages, claims for vesting or accelerated
vesting of options to purchase the Company's Common Stock, and any and all
claims arising under the Americans with Disabilities Act, the Family and Medical
Leave Act, or any other federal or state statute governing employment, including
but not limited to Title VII of the Civil Rights Act of 1964, the Employee
Retirement Income Security Act of 1974, the Worker Adjustment Retraining and
Notification Act, the Age Discrimination in Employment Act, the Texas Labor
Code, and the Texas Commission on Human Rights Act, as such statutes may have
been or may be amended from time to time.

You understand and agree, in compliance with any statute or ordinance which
requires a specific release of unknown claims or benefits, that this Agreement
includes a release of unknown claims, and you hereby expressly waive and
relinquish any and all claims, rights or benefits that you may have which are
unknown to you at the time of the execution of this Agreement. You understand
and agree that if, hereafter, you discover facts different from or in addition
to those which you now know or believe to be true, that the waivers and releases
of this Agreement shall be and remain effective in all respects notwithstanding
such different or additional facts or the discovery of such fact.

You represent and warrant that you do not presently have on file, and further
represent and warrant to the maximum extent allowed by law that you will not
hereafter file, any lawsuits, claims, charges, grievances or complaints against
the Company and/or the Released Parties in or with any administrative, state,
federal or governmental entity, agency, board or court, or before any other
tribunal or panel or arbitrators, public or private, based upon any actions or
omissions by the Company and/or the Released Parties occurring prior to your
execution of this Agreement. To the extent that you are still entitled to file
any administrative charge with any governmental agency, you hereby release any
personal entitlement to reinstatement, back pay, or any other types of damages
or injunctive relief in connection with any civil action brought on your behalf
after your filing of any administrative charge.

You agree that you will not make any negative or disparaging statements or
comments, either as fact or as opinion, about the Company, including but not
limited to its employees, officers,

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Timothy W. Kinnear                                                       Page 3
November 28, 2001

directors, shareholders, investors, vendors, products or services, business,
technologies, market position, performance and other similar information
concerning the Company. Nothing contained in this paragraph is intended to
prevent you from testifying truthfully in any legal proceeding.

Finally, you represent and agree that you are the sole and lawful owner of all
rights, title and interest in and to all released matters, claims and demands
arising out of or in any way related to your employment with the Company and/or
the termination thereof.

ACCEPTANCE OF AGREEMENT.

You have 14 days to consider this Agreement, and offer of severance contained
herein. You received this Agreement on November 28, 2001. You represent that if
you execute this Agreement before the 14-day consideration period has passed,
you do so voluntarily, and you knowingly and voluntarily waive your option to
use the entire 14 days to consider this Agreement. The settlement offer
contained in this Agreement will automatically expire if this Agreement, fully
executed by you, is not received by Mr. Paxton on or before December 12, 2001.

OTHER IMPORTANT TERMS.

-    By signing this Agreement, you acknowledge that you have been paid all
     wages, vacations, and all other compensation owed to you be the Company
     through your Termination Date.

-    Nothing in this Agreement shall constitute or be treated as an admission of
     any wrongdoing or liability on the part of the Company and/or the Released
     Parties.

-    You acknowledge that you have been advised to consult with an attorney of
     your choosing prior to entering into this Agreement.

-    You understand and agree that in any dispute between you and the Company
     regarding the terms of this Agreement and/or any alleged breach thereof,
     that the prevailing party shall be entitled to recover its costs and
     reasonable attorneys' fees arising out of such dispute.

-    This Agreement is binding on your representatives, heirs, executors,
     administrators, successors and assigns.

-    You are personally responsible for the payment of all federal, state and
     local taxes that are due, or may be due, for any payments and other
     consideration received by you under this Agreement. You agree to indemnify
     the Company and hold the Company harmless, from any and all taxes,
     penalties and/or other assessments that the Company is, or may become,
     obligated to pay on account of any payments and other consideration made to
     you under this Agreement.

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Timothy W. Kinnear                                                       Page 4
November 28, 2001

-    The terms and existence of this Agreement are strictly confidential and may
     not be disclosed to any other person or entity, with the exception of your
     immediate family members and legal and financial advisors.

-    This Agreement, and any agreements or documents referred to herein,
     constitute an integrated, written contract, expressing the entire agreement
     between the Company and you with respect to the subject matter hereof. In
     this regard, you represent and warrant that you are not relying on any
     promises or representations that do not appear in this Agreement. This
     Agreement can be amended or modified only by a written agreement, signed by
     you and the Company.

-    This Agreement shall, in all respects, be interpreted, enforced and
     governed under the laws of the State of Texas applicable to contracts
     executed and performed in Texas without giving effect to conflicts of law
     principles.

-    With respect to any suit, action, or other proceeding arising from (or
     relating to) this Agreement, the Company and you hereby irrevocably agree
     to the exclusive personal jurisdiction and venue of the United States
     District Court for the Northern District of Texas.

-    You agree that if any provision or portion of any provision of this
     Agreement is held to be invalid or unenforceable or to be contrary to
     public policy or any law, for any reason, the remainder of the Agreement
     shall not be affected thereby.

-    This Agreement may be executed in separate counterparts and by facsimile,
     and each such counterpart shall be deemed an original with the same effect
     as if the Company and you signed the same document.

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Timothy W. Kinnear                                                       Page 5
November 28, 2001

We wish you the best in the future. Please do not hesitate to contact G. Ward
Paxton if you have any questions or comments regarding the severance offer
contained in this letter.

INTRUSION, INC.

By:     /s/ G. Ward Paxton
   -------------------------------
Title:  President & CEO
      ----------------------------
Date:   11/29/01
      ----------------------------

TIMOTHY W. KINNEAR

By:     /s/ Timothy W. Kinnear
   -------------------------------
Date:   11-29-01
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                                                                   EXHIBIT 10.18

CONFIDENTIAL

December 28, 2000

Mr. William F. Ohrt
1565 Scenic Hollow Drive
Rochester Hills, MI 48306

Dear Bill:

    Confirming our recent discussions, we would very much like to have you join
Walter Industries, Inc. under the following terms:

    1.  You will serve as Executive Vice President and Chief Financial Officer
       of the company. Initially you will report to the Chief Executive Officer
       of the company.

       You will be responsible for all financial matters affecting the company,
       including financial reporting, balance sheet management, capital
       structure, strategic issues affecting the companies financial position,
       and working with the Audit Committee of the Board of Directors.

    2.  Your employment will commence January 22, 2001.

    3.  Your compensation package will be as follows:

       (a) Your base salary will be $290,000 per year.

       (b) Your annual target bonus level will be 65% of base pay. The amount of
           your bonus will fluctuate based upon actual performance under the
           company's bonus plan as in effect from time to time.

       (c) You will receive a car allowance of $1,500 per month, subject to
           usual withholding taxes.

       (d) You will be eligible for an initial award of 75,000 shares under the
           company's stock option plan in the form of a non-qualified stock
           option vesting 20% per year over five years, subject to terms of the
           company's stock option plan.

       (e) Although the company stopped offering retiree medical benefits to its
           employees earlier this year, you will be entitled to retiree medical
           coverage on the terms set forth in this letter. Coverage will be on
           the same terms and conditions as afforded retired employees of the
           company who are eligible for such coverage and in accordance with the
           terms of the Walter Industries, Inc. Group Medical Plan for Retired
           Employees, as in effect from time to time. A condition of Plan
           participation may be payment by participants of a portion of the
           premium designated by the company. The company reserves the right to
           modify the plan and employee contributions from time to time, in its
           sole discretion. Your participation in the Plan will vest, and you
           will be eligible to participate after you attain a combination of age
           and years of service with the company equal to 80. For this purpose,
           you will be deemed to have 70 points as of your date of hire.
           Attached for your information is a copy of a recent summary plan
           description, which describes current plan terms.

       (f) You will receive the following additional benefits:

           - Reimbursement for all reasonable and customary business-related
             travel and entertainment expenses in accordance with the terms of
             the policy generally applicable to the executives in the location
             in which you are primarily based, as it may change from time to
             time.
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           - Participation in the group life and health insurance benefit
             programs, generally applicable to executives employed in the
             location in which you are primarily based, in accordance with their
             terms, as they may change from time to time. You will be eligible
             for immediate participation in the Life and Health benefits on the
             date you join the company, with no waiting period. Attached are
             materials describing these benefits.

           - Participation in the Profit Sharing Plan, generally applicable to
             salaried employees in the location in which you are primarily
             based, as it may change from time to time and in accordance with
             its terms.

           - Participation in the Employee Stock Purchase Plan, generally
             applicable to salaried employees in the location in which you are
             primarily based, as it may change from time to time and in
             accordance with its terms.

           - Eligibility for four weeks of annual vacation to be used each year
             in accordance with policy generally applicable to executives
             employed in the location in which you are primarily based, as it
             may change from time to time.

           - You will be provided with temporary living expenses and
             reimbursement for relocation to the Tampa area in accordance with
             the policy attached.

    4.  In the event of your involuntary termination, other than for "cause", or
       your resignation following a significant diminution in pay or
       responsibilities, you will be eligible for the following severance
       benefits:

       - Eighteen months of salary continuance, including base and bonus, at the
         applicable rate in effect at the time of termination.

       - Eighteen months of continuing fringe benefits to the extent plans
         permit continued participation. In any event, health and life insurance
         will continue for the period of your contractual severance and the
         COBRA election period will not commence until the expiration of that
         period.

    5.  You agree that all inventions, improvements, trade secrets, reports,
       manuals, computer programs, systems, tapes and other ideas and materials
       developed or invented by you during the period of your employment with
       Walter Industries, either solely or in collaboration with others, which
       relate to the actual or anticipated business or research of the Company,
       which result from or are suggested by any work you may do for the
       Company, or which result from use of the Company's premises or the
       Company's or its customers' property (collectively, the "Developments")
       shall be the sole and exclusive property of the Company. You hereby
       assign to the Company your entire right and interest in any such
       Development and will hereafter execute any documents in connection
       therewith that the company may reasonably request. This section does not
       apply to any inventions that you made prior to your employment by the
       Company, or to any inventions that you develop entirely on your own time
       without using any of the Company's equipment, supplies, facilities or the
       Company's or its customers' confidential information and which do not
       relate to the Company's business, anticipated research and developments
       or the work you have performed for the Company.

    6.  As an inducement to Walter Industries to make this offer to you, you
       represent and warrant that you are not a party to any agreement or
       obligation for personal services and that there exists no impediment or
       restraint, contractual or otherwise on your power, right or ability to
       accept this offer and to perform the duties and obligations specified
       herein.

    7.  You acknowledge and agree that you will respect and safeguard Walter
       Industries property, trade secrets and confidential information. You
       acknowledge that the Company's electronic communication systems (such as
       email and voicemail) are maintained to assist in the conduct of the
       Company's business and that such systems and data exchanged or stored
       thereon are company property. In the event that you leave the employ of
       the Company, you will not disclose any trade secrets or confidential
       information you acquired while an employee of the
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       Company to any other person or entity, including without limitation, a
       subsequent employer, or use such information in any manner.

    8.  Definitions:

       (a) "Cause" shall mean your (i) conviction or guilty plea of a felony
           involving fraud or dishonesty, (ii) theft or embezzlement of property
           from the company, (iii) willful and continued refusal to perform the
           duties of your position (other than any such failure resulting from
           your incapacity due to physical or mental illness) or
           (iv) fraudulent preparation of financial information of the Company.

       (b) For purposes of this agreement, a significant diminution in pay or
           responsibility shall not have occurred if (i) the amount of your
           bonus fluctuates due to performance considerations under the
           company's bonus plan in effect from time to time, or (ii) you are
           transferred to a position of comparable responsibility and
           compensation with the company carrying the title of Senior Vice
           President or higher, even though that position may report to an
           officer who in turn reports to the Chief Executive Officer.

    9.  We discussed the company desires to have you, as a senior executive of
       the company, make a meaningful investment in Walter Industries. In this
       regard, you have committed to invest currently at least $100,000 in
       Walter's common stock. This investment should be made at the time you
       accept employment, prior to your obtaining any inside information
       concerning the company and its business.

    10. It is agreed and understood that this offer letter, if and when
       accepted, shall constitute our entire agreement with respect to the
       subject matter hereof and shall supersede all prior agreements,
       discussions, understandings and proposals (written or oral) relating to
       your employment with the Company.

    Bill, we are delighted that you will be joining Walter Industries and look
forward to working with you. If the terms of the proposal are acceptable, please
sign one of the enclosed copies and return it to me in the envelope provided.

Very truly yours,

Don DeFosset
President and Chief Executive Officer

DD:prc
attachment

Agreed and Accepted

-------------------------------------------
William F. Ohrt

-------------------------------------------
Date

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