Document:

EXHIBIT 4.5

 

REGISTRATION
RIGHTS AGREEMENT

 

This Registration Rights Agreement (this “Agreement”)
is made and entered into as of December 2, 2005, among Intrusion Inc., a
Delaware corporation (the “Company”), and the purchasers signatory
hereto (each such purchaser is a “Purchaser” and collectively, the “Purchasers”).

 

This Agreement is made pursuant to the
Securities Purchase Agreement, dated as of the date hereof among the Company
and the Purchasers (the “Purchase Agreement”).

 

The Company and the Purchasers hereby agree
as follows:

 

1. Definitions

 

Capitalized terms
used and not otherwise defined herein that are defined in the Purchase
Agreement shall have the meanings given such terms in the Purchase Agreement.
As used in this Agreement, the following terms shall have the following
meanings:

 

“Advice”
shall have the meaning set forth in Section 6(d).

 

“Blackout
Period” shall have the meaning set forth in Section 3(j).

 

“Effectiveness
Date” means, with respect to the Registration Statement required to be filed
hereunder, the 120th calendar day following the date; provided,
however, in the event the Company is notified by the Commission that the
above Registration Statement will not be reviewed or is no longer subject to
further review and comments, the Effectiveness Date as to such Registration
Statement shall be the fifth Trading Day following the date on which the
Company is so notified if such date precedes the date required above.

 

“Effectiveness
Period” shall have the meaning set forth in Section 2(a).

 

“Event”
shall have the meaning set forth in Section 2(b).

 

“Event Date”
shall have the meaning set forth in Section 2(b).

 

“Filing
Date” means, with respect to the Registration Statement required hereunder,
the 35th calendar day following the date hereof.

 

“Holder”
or “Holders” means the holder or holders, as the case may be, from time
to time of Registrable Securities.

 

“Indemnified
Party” shall have the meaning set forth in Section 5(c).

 

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“Indemnifying
Party” shall have the meaning set forth in Section 5(c).

 

“Losses”
shall have the meaning set forth in Section 5(a).

 

“Plan of
Distribution” shall have the meaning set forth in Section 2(a).

 

“Proceeding”
means an action, claim, suit, investigation or proceeding (including, without
limitation, an investigation or partial proceeding, such as a deposition),
whether commenced or threatened.

 

“Prospectus”
means the prospectus included in a Registration Statement (including, without
limitation, a prospectus that includes any information previously omitted from
a prospectus filed as part of an effective registration statement in reliance
upon Rule 430A promulgated under the Securities Act), as amended or
supplemented by any prospectus supplement, with respect to the terms of the
offering of any portion of the Registrable Securities covered by a Registration
Statement, and all other amendments and supplements to the Prospectus,
including post-effective amendments, and all material incorporated by reference
or deemed to be incorporated by reference in such Prospectus.

 

“Registrable
Securities” means, as of the date in question, (i) all of the shares
of Common Stock issuable upon conversion in full of the shares of Preferred
Stock, (ii) all Warrant Shares, (iii) all of the shares of the Common
Stock issuable upon the exercise of that certain Representative’s Warrant for
the Purchase of Shares of Common Stock dated December 2, 2005, issued by
the Company to Stonegate Securities, Inc., and (iv) any securities
issued or issuable upon any stock split, dividend or other distribution,
recapitalization or similar event with respect to the foregoing and any other
securities issued in exchange of or replacement thereof; until the Registration
Statement has been declared effective by the Commission and continues to be
effective during the Effectiveness Period, or until such share is sold in
compliance with Rule 144 or may be sold pursuant to Rule 144(k),
after which time such share shall not be a Registrable Security.

 

“Registration
Statement” means the registration statements required to be filed hereunder
and any additional registration statements contemplated by Section 3(c),
including (in each case) the Prospectus, amendments and supplements to such
registration statement or Prospectus, including pre- and post-effective
amendments, all exhibits thereto, and all material incorporated by reference or
deemed to be incorporated by reference in such registration statement.

 

“Rule 415”
means Rule 415 promulgated by the Commission pursuant to the Securities
Act, as such Rule may be amended from time to time, or any similar rule or
regulation hereafter adopted by the Commission having substantially the same
purpose and effect as such Rule.

 

“Rule 424”
means Rule 424 promulgated by the Commission pursuant to the Securities
Act, as such Rule may be amended from time to time, or any similar rule or

 

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regulation hereafter adopted by the
Commission having substantially the same purpose and effect as such Rule.

 

“Selling
Shareholder Questionnaire” shall have the meaning set forth in Section 3(a).

 

2. Shelf Registration

 

(a)  On
or prior to each Filing Date, the Company shall prepare and file with the
Commission a “Shelf” Registration Statement covering the resale of 100% of the
Registrable Securities on such Filing Date for an offering to be made on a
continuous basis pursuant to Rule 415. 
The Registration Statement shall be on Form S-3 (except if the
Company is not then eligible to register for resale the Registrable Securities
on Form S-3, in which case such registration shall be on another
appropriate form in accordance herewith) and shall contain (unless otherwise
directed by the Holders) substantially the “Plan of Distribution”
attached hereto as Annex A. 
Subject to the terms of this Agreement, the Company shall use
commercially reasonable efforts to cause the Registration Statement to be
declared effective under the Securities Act as promptly as possible after the
filing thereof, but in any event prior to the applicable Effectiveness Date,
and shall use commercially reasonable efforts to keep such Registration
Statement continuously effective under the Securities Act until all Registrable
Securities covered by such Registration Statement have been sold or may be sold
without volume restrictions pursuant to Rule 144(k) as determined by the
counsel to the Company pursuant to a written opinion letter to such effect,
addressed and acceptable to the Company’s transfer agent and the affected
Holders (the “Effectiveness Period”). 
The Company shall telephonically request effectiveness of a Registration
Statement as of 5:00 pm Eastern Time on a Trading Day.  The Company shall immediately notify the Holders
via facsimile of the effectiveness of the Registration Statement on the same
Trading Day that the Company telephonically confirms effectiveness with the
Commission, which shall be the date requested for effectiveness of the
Registration Statement.  The Company shall,
by 9:30 am Eastern Time on the Trading Day after the Effective Date (as defined
in the Purchase Agreement), file a Form 424(b)(5) with the
Commission.  Failure to so notify the
Holder within one Trading Day of such notification shall be deemed an Event
under Section 2(b).

 

(b) If: (i) a
Registration Statement is not filed on or prior to its Filing Date (if the
Company files a Registration Statement without affording the Holders the
opportunity to review and comment on the same as required by Section 3(a),
the Company shall not be deemed to have satisfied this clause (i)), or (ii) the
Company fails to file with the Commission a request for acceleration in
accordance with Rule 461 promulgated under the Securities Act, within five
Trading Days of the date that the Company is notified (orally or in writing,
whichever is earlier) by the Commission that a Registration Statement will not
be “reviewed,” or not subject to further review, or (iii) prior to its
Effectiveness Date, the Company fails to file a pre-effective amendment and
otherwise respond in writing to comments made by the Commission in respect of
such Registration Statement within ten Trading Days after the receipt of
comments by or notice from the Commission that such amendment is required in
order for a Registration Statement to be declared effective, or (iv) a
Registration Statement filed or required to be filed hereunder is not declared
effective by the Commission by the Effectiveness Date, or (v) after the

 

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Effectiveness Date, a Registration
Statement ceases for any reason to remain continuously effective as to all
Registrable Securities for which it is required to be effective, or the Holders
are not permitted to utilize the Prospectus therein to resell such Registrable
Securities for more than an aggregate of 30 calendar days during any 12-month
period (which need not be consecutive Trading Days) (any such failure or breach
being referred to as an “Event”,
and for purposes of clause (i) or (iv) the date on which such Event
occurs, or for purposes of clause (ii) the date on which such five Trading
Day period is exceeded, or for purposes of clause (iii) the date which
such ten Trading Day period is exceeded, or for purposes of clause (v) the
date on which such 30 calendar day period, as applicable, is exceeded being
referred to as “Event Date”),
then in addition to any other rights the Holders may have hereunder or under
applicable law, on each such Event Date and on each monthly anniversary of each
such Event Date (if the applicable Event shall not have been cured by such
date) until the applicable Event is cured, the Company shall pay to each Holder
an amount in cash, as partial liquidated damages and not as a penalty, equal to
(x) 1% of the aggregate purchase price paid by such Holder pursuant to the
Purchase Agreement for any Registrable Securities then held by such Holder upon
the occurrence of such Event Date and for the initial 30 day period following
such Event Date and (y) 2% of the aggregate purchase price paid by such Holder
pursuant to the Purchase Agreement for any Registrable Securities then held by
such Holder for subsequent 30 day periods following such Event Date.  If the Company fails to pay any partial
liquidated damages pursuant to this Section in full within seven days after
the date payable, the Company will pay interest thereon at a rate of 18% per
annum (or such lesser maximum amount that is permitted to be paid by applicable
law) to the Holder, accruing daily from the date such partial liquidated
damages are due until such amounts, plus all such interest thereon, are paid in
full. The partial liquidated damages pursuant to the terms hereof shall apply
on a daily pro-rata basis for any portion of a month prior to the cure of an
Event. Notwithstanding the foregoing, no liquidated damages or other penalty
pursuant to this Section 2(b) shall be payable by the Company (i) to
any Holder who is an officer or director of the Company at the time such
payment is due; or (ii) with respect to the Registrable Securities
described in clause (iii) of the definition thereof.

 

3. Registration Procedures

 

In connection with the Company’s registration
obligations hereunder, the Company shall:

 

(a)           Not
less than five Trading Days prior to the filing of each Registration Statement
or any related Prospectus or any amendment or supplement thereto (including any
document that would be incorporated or deemed to be incorporated therein by
reference), the Company shall, (i) furnish to each Holder copies of all
such documents proposed to be filed, which documents (other than those
incorporated or deemed to be incorporated by reference) will be subject to the
review of such Holders, and (ii) cause its officers and directors, counsel
and independent certified public accountants to respond to such inquiries as
shall be necessary, in the reasonable opinion of respective counsel to conduct
a reasonable investigation within the meaning of the Securities Act. The
Company shall not file the Registration Statement or any such Prospectus or any
amendments or supplements thereto to which the Holders of a majority of the
Registrable Securities shall reasonably object in good faith, provided that,
the Company is notified of such objection in writing no later than 5 Trading
Days after the Holders have been so furnished copies

 

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of such documents. Each Holder agrees to furnish to the Company a
completed Questionnaire in the form attached to this Agreement as Annex B (a “Selling
Shareholder Questionnaire”) as well
as such other information regarding such Holder or its Registrable Securities
as may be required for the Company to respond to any comments from the
Commission to the Registration Statement or any amendment thereto not
less than two Trading Days prior to the Filing Date or by the end of the fourth
Trading Day following the date on which such Holder receives draft materials in
accordance with this Section.

 

(b)           (i) Prepare
and file with the Commission such amendments, including post-effective
amendments, to a Registration Statement and the Prospectus used in connection
therewith as may be necessary to keep a Registration Statement continuously
effective as to the applicable Registrable Securities for the Effectiveness
Period (other than in connection with a Blackout Period) and prepare and file
with the Commission such additional Registration Statements in order to
register for resale under the Securities Act all of the Registrable Securities;
(ii) cause the related Prospectus to be amended or supplemented by any required
Prospectus supplement (subject to the terms of this Agreement), and as so
supplemented or amended to be filed pursuant to Rule 424; (iii) respond
as promptly as reasonably possible to any comments received from the Commission
with respect to a Registration Statement or any amendment thereto and as
promptly as reasonably possible provide the Holders true and complete copies of
all correspondence from and to the Commission relating to a Registration
Statement; and (iv) comply in all material respects with the provisions of
the Securities Act and the Exchange Act with respect to the disposition of all
Registrable Securities covered by a Registration Statement during the
applicable period in accordance (subject to the terms of this Agreement) with
the intended methods of disposition by the Holders thereof set forth in such
Registration Statement as so amended or in such Prospectus as so supplemented.

 

(c)           Notify
the Holders of Registrable Securities to be sold (which notice shall, pursuant
to clauses (ii) through (vi) hereof, be accompanied by an instruction
to suspend the use of the Prospectus until the requisite changes have been
made) as promptly as reasonably possible (and, in the case of (i)(A) below,
not less than five Trading Days prior to such filing) and (if requested by any
such Person) confirm such notice in writing no later than one Trading Day
following the day (i)(A) when a Prospectus or any Prospectus supplement or
post-effective amendment to a Registration Statement is proposed to be filed; (B) when
the Commission notifies the Company whether there will be a “review” of such
Registration Statement and whenever the Commission comments in writing on such
Registration Statement (the Company shall provide true and complete copies
thereof and all written responses thereto to each of the Holders); and (C) with
respect to a Registration Statement or any post-effective amendment, when the
same has become effective; (ii) of any request by the Commission or any
other Federal or state governmental authority for amendments or supplements to
a Registration Statement or Prospectus or for additional information; (iii) of
the issuance by the Commission or any other federal or state governmental
authority of any stop order suspending the effectiveness of a Registration
Statement covering any or all of the Registrable Securities or the initiation
of any Proceedings for that purpose; (iv) of the receipt by the Company of
any notification with respect to the suspension of the qualification or
exemption from qualification of any of the Registrable Securities for sale in
any jurisdiction, or the initiation or threatening of any Proceeding for such
purpose; (v) of the occurrence of any event or passage of time that makes
the financial

 

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statements included in a Registration Statement ineligible for
inclusion therein or any statement made in a Registration Statement or
Prospectus or any document incorporated or deemed to be incorporated therein by
reference untrue in any material respect or that requires any revisions to a
Registration Statement, Prospectus or other documents so that, in the case of a
Registration Statement or the Prospectus, as the case may be, it will not
contain any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances under which they were made, not misleading; and (vi) the
occurrence or existence of any pending corporate development or other
non-public information with respect to the Company that the Company believes
may be material and that, in the determination of the Company, makes it not in
the best interest of the Company to allow continued availability of the
Registration Statement or Prospectus; provided that any and all of such
information shall remain confidential to each Holder until such information
otherwise becomes public, unless disclosure by a Holder is required by law; provided,
further, notwithstanding each Holder’s agreement to keep such
information confidential, the Holders make no acknowledgement that any such
information is material, non-public information.

 

(d)           Use commercially reasonable efforts to avoid
the issuance of, or, if issued, obtain the withdrawal of (i) any order
suspending the effectiveness of a Registration Statement, or (ii) any
suspension of the qualification (or exemption from qualification) of any of the
Registrable Securities for sale in any jurisdiction, at the earliest
practicable moment.

 

(e)           Furnish
to each Holder, without charge, at least one conformed copy of each such
Registration Statement and each amendment thereto, including financial
statements and schedules, all documents incorporated or deemed to be
incorporated therein by reference to the extent requested by such Person, and
all exhibits to the extent requested by such Person (including those previously
furnished or incorporated by reference) promptly after the filing of such
documents with the Commission.

 

(f)            Promptly
deliver to each Holder, without charge, as many copies of the Prospectus or
Prospectuses (including each form of prospectus) and each amendment or
supplement thereto as such Persons may reasonably request in connection with
resales by the Holder of Registrable Securities.  Subject to the terms of this Agreement, the
Company hereby consents to the use of such Prospectus and each amendment or
supplement thereto by each of the selling Holders in connection with the
offering and sale of the Registrable Securities covered by such Prospectus and
any amendment or supplement thereto, except after the giving on any notice
pursuant to Section 3(c).

 

(g)           Prior
to any resale of Registrable Securities by a Holder, use its commercially
reasonable efforts to register or qualify or cooperate with the selling Holders
in connection with the registration or qualification (or exemption from the
Registration or qualification) of such Registrable Securities for the resale by
the Holder under the securities or Blue Sky laws of such jurisdictions within
the United States as any Holder reasonably requests in writing, to keep each
registration or qualification (or exemption therefrom) effective during the
Effectiveness Period and to do any and all other acts or things reasonably
necessary to enable the disposition in such jurisdictions of the Registrable
Securities covered by each Registration Statement; provided, that the Company
shall not be required to qualify generally to do business in any jurisdiction
where it

 

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is not then so qualified, subject the Company to any material tax in
any such jurisdiction where it is not then so subject or file a general consent
to service of process in any such jurisdiction.

 

(h)           If
NASDR Rule 2710 requires any broker-dealer to make a filing prior to
executing a sale by a Holder, make an Issuer Filing (as defined in such Rule)
with the NASDR, Inc. Corporate Financing Department pursuant to NASDR Rule 2710(b)(10)(A)(i) and
respond within five Trading Days to any comments received from NASDR in
connection therewith, and pay the filing fee required in connection therewith.

 

(i)            If
requested by the Holders, cooperate with the Holders to facilitate the timely
preparation and delivery of certificates representing Registrable Securities to
be delivered to a transferee pursuant to the Registration Statement, which
certificates shall be free, to the extent permitted by the Purchase Agreement,
of all restrictive legends, and to enable such Registrable Securities to be in
such denominations and registered in such names as any such Holders may
request.

 

(j)            Upon
the occurrence of any event contemplated by this Section 3, as promptly as
reasonably possible under the circumstances taking into account the Company’s
good faith assessment of any adverse consequences to the Company and its
stockholders of the premature disclosure of such event, prepare a supplement or
amendment, including a post-effective amendment, to a Registration Statement or
a supplement to the related Prospectus or any document incorporated or deemed
to be incorporated therein by reference, and file any other required document
so that, as thereafter delivered, neither a Registration Statement nor such
Prospectus will contain an untrue statement of a material fact or omit to state
a material fact required to be stated therein or necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading. If the Company
notifies the Holders in accordance with clauses (ii) through (vi) of Section 3(c) above
to suspend the use of any Prospectus until the requisite changes to such
Prospectus have been made, then the Holders shall suspend use of such
Prospectus.  The Company will use its
best efforts to ensure that the use of the Prospectus may be resumed as
promptly as is practicable.  The Company
shall be entitled to exercise its right under this Section 3(j) to suspend
the availability of a Registration Statement and Prospectus, subject to the
payment of partial liquidated damages pursuant to Section 2(b), for a
period not to exceed 60 days (which need not be consecutive days) in any 12
month period (each a “Blackout Period”).

 

(k)           Comply
with all applicable rules and regulations of the Commission.

 

(l)            The
Company may require each selling Holder to furnish to the Company a certified
statement as to the number of shares of Common Stock beneficially owned by such
Holder and, if required by the Commission, the person thereof that has voting
and dispositive control over the Shares. During any periods that the Company is
unable to meet its obligations hereunder with respect to the registration of
the Registrable Securities solely because any Holder fails to furnish such
information within three Trading Days of the Company’s request, any liquidated
damages that are accruing at such time as to such Holder only shall be tolled
and any Event that may otherwise occur solely because of such delay shall be
suspended as to such Holder only, until such information is delivered to the
Company.

 

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4. Registration Expenses. All fees and
expenses incident to the performance of or compliance with this Agreement by
the Company shall be borne by the Company whether or not any Registrable
Securities are sold pursuant to the Registration Statement. The fees and
expenses referred to in the foregoing sentence shall include, without
limitation, (i) all registration and filing fees (including, without
limitation, fees and expenses (A) with respect to filings required to be
made with the Trading Market on which the Common Stock is then listed for
trading, (B) in compliance with applicable state securities or Blue Sky
laws reasonably agreed to by the Company in writing (including, without
limitation, fees and disbursements of counsel for the Company in connection
with Blue Sky qualifications or exemptions of the Registrable Securities and
determination of the eligibility of the Registrable Securities for investment
under the laws of such jurisdictions as requested by the Holders) and (C) if
not previously paid by the Company in connection with an Issuer Filing, with
respect to any filing that may be required to be made by any broker through
which a Holder intends to make sales of Registrable Securities with NASD
Regulation, Inc. pursuant to the NASD Rule 2710, so long as the
broker is receiving no more than a customary brokerage commission in connection
with such sale, (ii) printing expenses (including, without limitation,
expenses of printing certificates for Registrable Securities and of printing
prospectuses if the printing of prospectuses is reasonably requested by the
holders of a majority of the Registrable Securities included in a Registration
Statement), (iii) messenger, telephone and delivery expenses, (iv) fees
and disbursements of counsel for the Company, (v) Securities Act liability
insurance, if the Company so desires such insurance, and (vi) fees and
expenses of all other Persons retained by the Company in connection with the
consummation of the transactions contemplated by this Agreement.  In addition, the Company shall be responsible
for all of its internal expenses incurred in connection with the consummation
of the transactions contemplated by this Agreement (including, without
limitation, all salaries and expenses of its officers and employees performing
legal or accounting duties), the expense of any annual audit and the fees and
expenses incurred in connection with the listing of the Registrable Securities
on any securities exchange as required hereunder.  In no event shall the Company be responsible
for any broker or similar commissions or, except to the extent provided for in
the Transaction Documents, any legal fees or other costs of the Holders.

 

5. Indemnification

 

(a) Indemnification by the Company. The Company shall,
notwithstanding any termination of this Agreement, indemnify and hold harmless
each Holder, the officers, directors, agents, brokers (including brokers who
offer and sell Registrable Securities as principal as a result of a pledge or
any failure to perform under a margin call of Common Stock), investment
advisors and employees of each of them, each Person who controls any such
Holder (within the meaning of Section 15 of the Securities Act or Section 20
of the Exchange Act) and the officers, directors, agents and employees of each
such controlling Person, to the fullest extent permitted by applicable law,
from and against any and all losses, claims, damages, liabilities, costs
(including, without limitation, reasonable attorneys’ fees) and expenses
(collectively, “Losses”), as incurred, arising out of or relating to any
untrue or alleged untrue statement of a material fact contained in a
Registration Statement, any Prospectus or any form of prospectus or in any
amendment or supplement thereto or in any preliminary prospectus, or arising
out of or relating to any omission or alleged omission of a material fact
required to be stated therein or necessary

 

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to make the statements therein (in the case of any Prospectus or form
of prospectus or supplement thereto, in light of the circumstances under which
they were made) not misleading, except to the extent, but only to the extent,
that (i) such untrue statements or omissions are based solely upon information
regarding such Holder furnished in writing to the Company by such Holder
expressly for use therein, or to the extent that such information relates to
such Holder or such Holder’s proposed method of distribution of Registrable
Securities and was reviewed and expressly approved in writing by such Holder
expressly for use in a Registration Statement, such Prospectus or such form of
Prospectus or in any amendment or supplement thereto (it being understood that
the Holder has approved Annex A hereto for this purpose) or (ii) in the
case of an occurrence of an event of the type specified in Section 3(c)(ii)-(vi),
the use by such Holder of an outdated or defective Prospectus after the Company
has notified such Holder in writing that the Prospectus is outdated or
defective and prior to the receipt by such Holder of the Advice contemplated in
Section 6(d).  The Company shall
notify the Holders promptly of the institution, threat or assertion of any
Proceeding arising from or in connection with the transactions contemplated by
this Agreement of which the Company is aware.

 

(b) Indemnification by Holders. Each Holder shall, severally and
not jointly, indemnify and hold harmless the Company, its directors, officers,
agents and employees, each Person who controls the Company (within the meaning
of Section 15 of the Securities Act and Section 20 of the Exchange
Act), and the directors, officers, agents or employees of such controlling
Persons, to the fullest extent permitted by applicable law, from and against
all Losses, as incurred, to the extent arising out of or based solely upon: (x)
such Holder’s failure to comply with the prospectus delivery requirements of
the Securities Act or (y) any untrue or alleged untrue statement of a material
fact contained in any Registration Statement, any Prospectus, or any form of
prospectus, or in any amendment or supplement thereto or in any preliminary
prospectus, or arising out of or relating to any omission or alleged omission
of a material fact required to be stated therein or necessary to make the
statements therein not misleading (i) to the extent, but only to the
extent, that such untrue statement or omission is contained in any information
so furnished in writing by such Holder to the Company specifically for
inclusion in such Registration Statement or such Prospectus or (ii) to the
extent that (1) such untrue statements or omissions are based solely upon
information regarding such Holder furnished in writing to the Company by such
Holder expressly for use therein, or to the extent that such information
relates to such Holder or such Holder’s proposed method of distribution of
Registrable Securities and was reviewed and expressly approved in writing by
such Holder expressly for use in the Registration Statement (it being understood
that the Holder has approved Annex A hereto for this purpose), such Prospectus
or such form of Prospectus or in any amendment or supplement thereto or (2) in
the case of an occurrence of an event of the type specified in Section 3(c)(ii)-(vi),
the use by such Holder of an outdated or defective Prospectus after the Company
has notified such Holder in writing that the Prospectus is outdated or
defective and prior to the receipt by such Holder of the Advice contemplated in
Section 6(d). In no event shall the liability of any selling Holder
hereunder be greater in amount than the dollar amount of the net proceeds
received by such Holder upon the sale of the Registrable Securities giving rise
to such indemnification obligation.

 

(c) Conduct of Indemnification Proceedings. If any Proceeding
shall be brought or asserted against any Person entitled to indemnity hereunder
(an “Indemnified Party”), such

 

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Indemnified Party shall promptly notify the Person from whom indemnity
is sought (the “Indemnifying Party”) in writing, and the Indemnifying
Party shall have the right to assume the defense thereof, including the
employment of counsel reasonably satisfactory to the Indemnified Party and the
payment of all fees and expenses incurred in connection with defense thereof;
provided, that the failure of any Indemnified Party to give such notice shall
not relieve the Indemnifying Party of its obligations or liabilities pursuant
to this Agreement, except (and only) to the extent that it shall be finally
determined by a court of competent jurisdiction (which determination is not
subject to appeal or further review) that such failure shall have prejudiced
the Indemnifying Party.

 

An Indemnified Party shall have the right to employ
separate counsel in any such Proceeding and to participate in the defense
thereof, but the fees and expenses of such counsel shall be at the expense of
such Indemnified Party or Parties unless: 
(1) the Indemnifying Party has agreed in writing to pay such fees
and expenses; (2) the Indemnifying Party shall have failed promptly to
assume the defense of such Proceeding and to employ counsel reasonably
satisfactory to such Indemnified Party in any such Proceeding (which, if the Company is the Indemnifying
Party, shall be deemed to include Company Counsel); or (3) the
named parties to any such Proceeding (including any impleaded parties) include
both such Indemnified Party and the Indemnifying Party, and such Indemnified
Party shall reasonably believe that a material conflict of interest is likely
to exist if the same counsel were to represent such Indemnified Party and the
Indemnifying Party (in which case, if such Indemnified Party notifies the
Indemnifying Party in writing that it elects to employ separate counsel at the
expense of the Indemnifying Party, the Indemnifying Party shall not have the
right to assume the defense thereof and the reasonable fees and expenses of one
separate counsel shall be at the expense of the Indemnifying Party).  The Indemnifying Party shall not be liable
for any settlement of any such Proceeding effected without its written consent,
which consent shall not be unreasonably withheld.  No Indemnifying Party shall, without the
prior written consent of the Indemnified Party, effect any settlement of any
pending Proceeding in respect of which any Indemnified Party is a party, unless
such settlement includes an unconditional release of such Indemnified Party
from all liability on claims that are the subject matter of such Proceeding.

 

Subject to the terms of this Agreement, all
reasonable fees and expenses of the Indemnified Party (including reasonable
fees and expenses to the extent incurred in connection with investigating or
preparing to defend such Proceeding in a manner not inconsistent with this
Section) shall be paid to the Indemnified Party, as incurred, within ten
Trading Days of written notice thereof to the Indemnifying Party; provided,
that the Indemnified Party shall promptly reimburse the Indemnifying Party for
that portion of such fees and expenses applicable to such actions for which
such Indemnified Party is not entitled to indemnification hereunder, determined
based upon the relative faults of the parties.

 

(d) Contribution. If the indemnification under Section 5(a) or
5(b) is unavailable to an Indemnified Party or insufficient to hold an
Indemnified Party harmless for any Losses, then each Indemnifying Party shall
contribute to the amount paid or payable by such Indemnified Party, in such
proportion as is appropriate to reflect the relative fault of the Indemnifying
Party and Indemnified Party in connection with the actions, statements or
omissions that resulted in such Losses as well as any other relevant equitable
considerations. The relative fault of such

 

10

 

Indemnifying Party and Indemnified Party shall be determined by
reference to, among other things, whether any action in question, including any
untrue or alleged untrue statement of a material fact or omission or alleged
omission of a material fact, has been taken or made by, or relates to
information supplied by, such Indemnifying Party or Indemnified Party, and the
parties’ relative intent, knowledge, access to information and opportunity to
correct or prevent such action, statement or omission.  The amount paid or payable by a party as a
result of any Losses shall be deemed to include, subject to the limitations set
forth in this Agreement, any reasonable attorneys’ or other reasonable fees or
expenses incurred by such party in connection with any Proceeding to the extent
such party would have been indemnified for such fees or expenses if the
indemnification provided for in this Section was available to such party
in accordance with its terms.

 

The parties hereto agree that it would not be
just and equitable if contribution pursuant to this Section 5(d) were
determined by pro rata allocation or by any other method of allocation that
does not take into account the equitable considerations referred to in the
immediately preceding paragraph. 
Notwithstanding the provisions of this Section 5(d), no Holder
shall be required to contribute, in the aggregate, any amount in excess of the
amount by which the proceeds actually received by such Holder from the sale of
the Registrable Securities subject to the Proceeding exceeds the amount of any
damages that such Holder has otherwise been required to pay by reason of such
untrue or alleged untrue statement or omission or alleged omission, except in
the case of fraud by such Holder.

 

The indemnity and contribution agreements
contained in this Section are in addition to any liability that the
Indemnifying Parties may have to the Indemnified Parties.

 

6. Miscellaneous

 

(a)       Remedies.  In the event of a breach by the Company or by
a Holder, of any of their obligations under this Agreement, each Holder or the
Company, as the case may be, in addition to being entitled to exercise all
rights granted by law and under this Agreement, including recovery of damages,
will be entitled to specific performance of its rights under this
Agreement.  The Company and each Holder
agree that monetary damages would not provide adequate compensation for any
losses incurred by reason of a breach by it of any of the provisions of this
Agreement and hereby further agrees that, in the event of any action for
specific performance in respect of such breach, it shall waive the defense that
a remedy at law would be adequate.

 

(b)       No Piggyback on Registrations.
Except as set forth on Schedule 6(b) attached hereto, neither
the Company nor any of its security holders (other than the Holders in such
capacity pursuant hereto) may include securities of the Company in the
Registration Statement other than the Registrable Securities.  The Company shall not file any other registration
statements (other than registration statements on Form S-4 or S-8) until
the initial Registration Statement required hereunder is declared effective by
the Commission, provided that this Section 6(b) shall not prohibit
the Company from filing amendments to registration statements already filed.

 

11

 

(c)       Compliance. Each Holder covenants
and agrees that it will comply with the prospectus delivery requirements of the
Securities Act as applicable to it in connection with sales of Registrable
Securities pursuant to the Registration Statement.

 

(d)       Discontinued Disposition. Each
Holder agrees by its acquisition of such Registrable Securities that, upon
receipt of a notice from the Company of the occurrence of any event of the kind
described in Section 3(c), such Holder will forthwith discontinue
disposition of such Registrable Securities under a Registration Statement until
such Holder’s receipt of the copies of the supplemented Prospectus and/or
amended Registration Statement, or until it is advised in writing (the “Advice”)
by the Company that the use of the applicable Prospectus may be resumed, and,
in either case, has received copies of any additional or supplemental filings
that are incorporated or deemed to be incorporated by reference in such
Prospectus or Registration Statement. 
The Company will use commercially reasonable efforts to ensure that the
use of the Prospectus may be resumed as promptly as it practicable.  The Company agrees and acknowledges that any
periods during which the Holder is required to discontinue the disposition of
the Registrable Securities hereunder shall be subject to the provisions of Section 2(b).

 

(e)       Piggy-Back Registrations. If at
any time during the Effectiveness Period there is not an effective Registration
Statement covering all of the Registrable Securities and the Company shall
determine to prepare and file with the Commission a registration statement
relating to an offering for its own account or the account of others under the
Securities Act of any of its equity securities, other than on Form S-4 or Form S-8
(each as promulgated under the Securities Act) or their then equivalents
relating to equity securities to be issued solely in connection with any
acquisition of any entity or business or equity securities issuable in
connection with the stock option or other employee benefit plans, then the
Company shall send to each Holder a written notice of such determination and,
if within fifteen days after the date of such notice, any such Holder shall so
request in writing, the Company shall include in such registration statement
all or any part of such Registrable Securities such holder requests to be
registered; provided, that, the Company shall not be required to register any
Registrable Securities pursuant to this Section 6(e) that are
eligible for resale pursuant to Rule 144(k) promulgated under the
Securities Act or that are the subject of a then effective Registration
Statement.

 

(f)        Amendments and Waivers. The provisions
of this Agreement, including the provisions of this sentence, may not be
amended, modified or supplemented, and waivers or consents to departures from
the provisions hereof may not be given, unless the same shall be in writing and
signed by the Company the Holders of at least 75% of the then outstanding
Registrable Securities.  Notwithstanding
the foregoing, a waiver or consent to depart from the provisions hereof with
respect to a matter that relates exclusively to the rights of Holders and that
does not directly or indirectly affect the rights of other Holders may be given
by Holders of all of the Registrable Securities to which such waiver or consent
relates; provided, however, that the provisions of this sentence
may not be amended, modified, or supplemented except in accordance with the
provisions of the immediately preceding sentence.

 

(g)       Notices. Any and all notices or
other communications or deliveries required or permitted to be provided
hereunder shall be delivered as set forth in the Purchase Agreement.

 

12

 

(h)       Successors and Assigns. This
Agreement shall inure to the benefit of and be binding upon the successors and
permitted assigns of each of the parties and shall inure to the benefit of each
Holder. The Company may not assign its rights or obligations hereunder without
the prior written consent of all of the Holders of the then-outstanding
Registrable Securities. Each Holder may assign their respective rights
hereunder in the manner and to the Persons as permitted under the Purchase
Agreement.

 

(i)        No Inconsistent Agreements.
Neither the Company nor any of its subsidiaries has entered, as of the date
hereof, nor shall the Company or any of its subsidiaries, on or after the date
of this Agreement, enter into any agreement with respect to its securities,
that would have the effect of impairing the rights granted to the Holders in
this Agreement or otherwise conflicts with the provisions hereof.  Except for the Company’s obligations under that certain Registration Rights
Agreement dated as of March 25, 2004, by and among the Company and the
persons listed on Exhibit A thereto, and that certain Registration
Rights Agreement dated as of March 28, 2005, by and among the Company and
the purchasers signatory thereto, neither the Company nor any of its
subsidiaries has previously entered into any agreement granting any
registration rights with respect to any of its securities to any Person that
have not been satisfied in full.

 

(j)        Execution and Counterparts. This
Agreement may be executed in any number of counterparts, each of which when so
executed shall be deemed to be an original and, all of which taken together
shall constitute one and the same Agreement. In the event that any signature is
delivered by facsimile transmission, such signature shall create a valid
binding obligation of the party executing (or on whose behalf such signature is
executed) the same with the same force and effect as if such facsimile
signature were the original thereof.

 

(k)       Governing Law.  All
questions concerning the construction, validity, enforcement and interpretation
of this Agreement shall be determined with the provisions of the Purchase
Agreement.

 

(l)        Cumulative Remedies. The remedies
provided herein are cumulative and not exclusive of any remedies provided by
law.

 

(m)      Severability. If any term,
provision, covenant or restriction of this Agreement is held by a court of
competent jurisdiction to be invalid, illegal, void or unenforceable, the
remainder of the terms, provisions, covenants and restrictions set forth herein
shall remain in full force and effect and shall in no way be affected, impaired
or invalidated, and the parties hereto shall use their commercially reasonable
efforts to find and employ an alternative means to achieve the same or
substantially the same result as that contemplated by such term, provision,
covenant or restriction. It is hereby stipulated and declared to be the
intention of the parties that they would have executed the remaining terms, provisions,
covenants and restrictions without including any of such that may be hereafter
declared invalid, illegal, void or unenforceable.

 

(n)       Headings. The headings in this
Agreement are for convenience of reference only and shall not limit or
otherwise affect the meaning hereof.

 

13

 

(o)       Independent Nature of Holders’ Obligations
and Rights. The obligations of each Holder hereunder are several and
not joint with the obligations of any other Holder hereunder, and no Holder
shall be responsible in any way for the performance of the obligations of any
other Holder hereunder. Nothing contained herein or in any other agreement or
document delivered at any closing, and no action taken by any Holder pursuant
hereto or thereto, shall be deemed to constitute the Holders as a partnership,
an association, a joint venture or any other kind of entity, or create a
presumption that the Holders are in any way acting in concert with respect to
such obligations or the transactions contemplated by this Agreement. Each
Holder shall be entitled to protect and enforce its rights, including without
limitation the rights arising out of this Agreement, and it shall not be
necessary for any other Holder to be joined as an additional party in any
proceeding for such purpose.

 

(p)       Assignment
of Registration Rights. The rights of the Holders hereunder, including the
right to have the Company register for resale Registrable Securities in
accordance with the terms of this Agreement, shall be assignable by each Holder
to any transferee of such Holder of all or a portion of
the shares of Registrable Securities if: 
(i) such Holder agrees in writing with the transferee or assignee
to assign such rights, and a copy of such agreement is furnished to the Company
within a reasonable time after such assignment; (ii) the Company is,
within a reasonable time after such transfer or assignment, furnished with
written notice of (A) the name and address of such transferee or assignee,
and (B) the securities with respect to which such registration rights are
being transferred or assigned; (iii) following such transfer or assignment
the further disposition of such securities by the transferee or assignees is
restricted under the Securities Act and applicable state securities laws; (iv) at
or before the time the Company receives the written notice contemplated by
clause (ii) of this Section, the transferee or assignee agrees in writing
with the Company to be bound by all of the provisions of this Agreement; and (v) such
transfer shall have been made in accordance with the applicable requirements of
the Purchase Agreement. In addition, each Holder shall have the right to assign
its rights hereunder to any other Person with the prior written consent of the
Company. The rights to assignment shall apply to each Holder and to its
subsequent successors and assigns.

 

********************

 

14

 

IN WITNESS WHEREOF, the parties have executed
this Registration Rights Agreement as of the date first written above.

 

 

	
   

  	
  INTRUSION INC.

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ G. Ward Paxton

  	
   

  
	
   

  	
  Name: G. Ward Paxton

  
	
   

  	
  Title: President

  

 

 

[SIGNATURE PAGE OF HOLDERS
FOLLOWS]

 

15

 

[HOLDER’S SIGNATURE PAGE TO
INTZ RRA]

 

	
  Name of Holder:

  	
   

  	
   

  
	
  Signature of Authorized Signatory of Holder:

  	
   

  	
   

  
	
  Name of Authorized Signatory:

  	
   

  	
   

  
	
  Title of Authorized Signatory:

  	
   

  	
   

  
						

 

 

[SIGNATURE PAGES CONTINUE]

 

16

 

ANNEX
A

 

Plan of Distribution

 

Each Selling Stockholder (the “Selling Stockholders”)
of the common stock (“Common Stock”) of Intrusion Inc., a Delaware
corporation (the “Company”) and any of their pledgees, assignees and
successors-in-interest may, from time to time, sell any or all of their shares
of Common Stock on the Trading Market or any other stock exchange, market or
trading facility on which the shares are traded or in private
transactions.  These sales may be at
fixed or negotiated prices.  A Selling
Stockholder may use any one or more of the following methods when selling
shares:

 

•      ordinary
brokerage transactions and transactions in which the broker-dealer solicits
purchasers;

 

•      block
trades in which the broker-dealer will attempt to sell the shares as agent but
may position and resell a portion of the block as principal to facilitate the
transaction;

 

•      purchases
by a broker-dealer as principal and resale by the broker-dealer for its
account;

 

•      an
exchange distribution in accordance with the rules of the applicable
exchange;

 

•      privately
negotiated transactions;

 

•      settlement
of short sales entered into after the effective date of the registration
statement of which this prospectus is a part;

 

•      broker-dealers
may agree with the Selling Stockholders to sell a specified number of such
shares at a stipulated price per share;

 

•      a
combination of any such methods of sale;

 

•      through
the writing or settlement of options or other hedging transactions, whether
through an options exchange or otherwise; or

 

•      any
other method permitted pursuant to applicable law.

 

The Selling Stockholders may also sell shares under Rule 144
under the Securities Act of 1933, as amended (the “Securities Act”), if
available, rather than under this prospectus.

 

Broker-dealers engaged by the Selling Stockholders may
arrange for other brokers-dealers to participate in sales.  Broker-dealers may receive commissions or
discounts from the Selling Stockholders (or, if any broker-dealer acts as agent
for the purchaser of shares, from the purchaser) in amounts to be negotiated,
but, except as set forth in a supplement to this Prospectus, in the case of an
agency transaction not in excess of a customary brokerage

 

17

 

commission in compliance
with NASDR Rule 2440; and in the case of a principal transaction a markup
or markdown in compliance with NASDR IM-2440.

 

In connection with the sale of the Common Stock or
interests therein, the Selling Stockholders may enter into hedging transactions
with broker-dealers or other financial institutions, which may in turn engage
in short sales of the Common Stock in the course of hedging the positions they
assume.  The Selling Stockholders may
also sell shares of the Common Stock short and deliver these securities to
close out their short positions, or loan or pledge the Common Stock to
broker-dealers that in turn may sell these securities.  The Selling Stockholders may also enter into
option or other transactions with broker-dealers or other financial institutions
or the creation of one or more derivative securities which require the delivery
to such broker-dealer or other financial institution of shares offered by this
prospectus, which shares such broker-dealer or other financial institution may
resell pursuant to this prospectus (as supplemented or amended to reflect such
transaction).

 

The Selling Stockholders and any broker-dealers or
agents that are involved in selling the shares may be deemed to be “underwriters”
within the meaning of the Securities Act in connection with such sales.  In such event, any commissions received by
such broker-dealers or agents and any profit on the resale of the shares
purchased by them may be deemed to be underwriting commissions or discounts
under the Securities Act.  Each Selling
Stockholder has informed the Company that it does not have any written or oral
agreement or understanding, directly or indirectly, with any person to
distribute the Common Stock. In no event shall any broker-dealer receive fees,
commissions and markups which, in the aggregate, would exceed eight percent
(8%).

 

The Company is required to pay certain fees and
expenses incurred by the Company incident to the registration of the
shares.  The Company has agreed to
indemnify the Selling Stockholders against certain losses, claims, damages and
liabilities, including liabilities under the Securities Act.

 

Because Selling Stockholders may be deemed to be “underwriters”
within the meaning of the Securities Act, they will be subject to the
prospectus delivery requirements of the Securities Act.  In addition, any securities covered by this
prospectus which qualify for sale pursuant to Rule 144 under the
Securities Act may be sold under Rule 144 rather than under this
prospectus.  Each Selling Stockholder has
advised us that they have not entered into any written or oral agreements,
understandings or arrangements with any underwriter or broker-dealer regarding
the sale of the resale shares.  There is
no underwriter or coordinating broker acting in connection with the proposed
sale of the resale shares by the Selling Stockholders.

 

We agreed to keep this prospectus effective until the
earlier of (i) the date on which the shares may be resold by the Selling
Stockholders without registration and without regard to any volume limitations
by reason of Rule 144(e) under the Securities Act or any other rule of
similar effect or (ii) all of the shares have been sold pursuant to the
prospectus or Rule 144 under the Securities Act or any other rule of
similar effect.  The resale shares will
be sold only through registered or licensed brokers or dealers if required
under applicable state securities laws. In addition, in certain states, the
resale shares may not be sold unless they have been registered or

 

18

 

qualified for sale in the
applicable state or an exemption from the registration or qualification
requirement is available and is complied with.

 

Under applicable rules and regulations under the
Exchange Act, any person engaged in the distribution of the resale shares may
not simultaneously engage in market making activities with respect to the
Common Stock for a period of two business days prior to the commencement of the
distribution.  In addition, the Selling
Stockholders will be subject to applicable provisions of the Exchange Act and
the rules and regulations thereunder, including Regulation M, which may
limit the timing of purchases and sales of shares of the Common Stock by the
Selling Stockholders or any other person. 
We will make copies of this prospectus available to the Selling
Stockholders and have informed them of the need to deliver a copy of this
prospectus to each purchaser at or prior to the time of the sale.

 

19

 

Annex B

 

INTRUSION INC.

 

Selling Securityholder Notice and Questionnaire

 

The
undersigned beneficial owner of common stock, par value $0.01 per share (the “Common
Stock”), of Intrusion Inc., a Delaware corporation (the “Company”),
(the “Registrable Securities”) understands that the Company has filed or
intends to file with the Securities and Exchange Commission (the “Commission”)
a registration statement on Form S-3 (the “Registration Statement”)
for the registration and resale under Rule 415 of the Securities Act of
1933, as amended (the “Securities Act”), of the Registrable Securities,
in accordance with the terms of the Registration Rights Agreement, dated as of December 2,
2005 (the “Registration Rights Agreement”), among the Company and the
Purchasers named therein.  A copy of the
Registration Rights Agreement is available from the Company upon request at the
address set forth below.  All capitalized
terms not otherwise defined herein shall have the meanings ascribed thereto in
the Registration Rights Agreement.

 

Certain
legal consequences arise from being named as a selling securityholder in the
Registration Statement and the related prospectus.  Accordingly, holders and beneficial owners of
Registrable Securities are advised to consult their own securities law counsel
regarding the consequences of being named or not being named as a selling
securityholder in the Registration Statement and the related prospectus.

 

NOTICE

 

The
undersigned beneficial owner (the “Selling Securityholder”) of
Registrable Securities hereby elects to include the Registrable Securities
owned by it and listed below in Item 3 (unless otherwise specified under such
Item 3) in the Registration Statement.

 

20

 

The undersigned hereby
provides the following information to the Company and represents and warrants
that such information is accurate:

 

QUESTIONNAIRE

 

1.             Name.

 

(a)           Full Legal Name
of Selling Securityholder

 

 

(b)           Full Legal Name
of Registered Holder (if not the same as (a) above) through which
Registrable Securities Listed in Item 3 below are held:

 

 

(c)           Full Legal Name
of Natural Control Person (which means a natural person who directly or
indirectly alone or with others has power to vote or dispose of the securities
covered by the questionnaire):

 

 

2.  Address for Notices to Selling
Securityholder:

 

	
   

  
	
   

  
	
  Telephone:

  
	
  Fax:

  
	
  Contact
  Person:

  

 

3.  Beneficial Ownership of Registrable
Securities:

 

(a)           Type and Number
of Registrable Securities beneficially owned:

 

 

21

 

4.  Broker-Dealer Status:

 

(a)           Are you a
broker-dealer?

 

Yes   o      No   o

 

(b)           If “yes” to Section 4(a),
did you receive your Registrable Securities as compensation for investment
banking services to the Company.

 

Yes   o      No   o

 

Note:      If no, the
Commission’s staff has indicated that you should be identified as an
underwriter in the Registration Statement.

 

(c)           Are you an
affiliate of a broker-dealer?

 

Yes   o      No   o

 

(d)           If you are an
affiliate of a broker-dealer, do you certify that you bought the Registrable
Securities in the ordinary course of business, and at the time of the purchase
of the Registrable Securities to be resold, you had no agreements or
understandings, directly or indirectly, with any person to distribute the
Registrable Securities?

 

Yes   o      No   o

 

Note:      If no, the
Commission’s staff has indicated that you should be identified as an
underwriter in the Registration Statement.

 

5.  Beneficial Ownership of Other Securities of
the Company Owned by the Selling Securityholder.

 

Except as set forth below in this
Item 5, the undersigned is not the beneficial or registered owner of any
securities of the Company other than the Registrable Securities listed above in
Item 3.

 

(a)           Type and Amount
of Other Securities beneficially owned by the Selling Securityholder:

 

 

22

 

6.  Relationships with the Company:

 

Except as set forth below, neither
the undersigned nor any of its affiliates, officers, directors or principal
equity holders (owners of 5% of more of the equity securities of the
undersigned) has held any position or office or has had any other material
relationship with the Company (or its predecessors or affiliates) during the
past three years.

 

State any exceptions here:

 

 

The
undersigned agrees to promptly notify the Company of any inaccuracies or
changes in the information provided herein that may occur subsequent to the
date hereof at any time while the Registration Statement remains effective.

 

By
signing below, the undersigned consents to the disclosure of the information
contained herein in its answers to Items 1 through 6 and the inclusion of such
information in the Registration Statement and the related prospectus and any
amendments or supplements thereto.  The
undersigned understands that such information will be relied upon by the
Company in connection with the preparation or amendment of the Registration
Statement and the related prospectus.

 

IN
WITNESS WHEREOF the undersigned, by authority duly given, has caused this
Notice and Questionnaire to be executed and delivered either in person or by
its duly authorized agent.

 

	
  Dated:

  	
   

  	
   

  	
  Beneficial Owner:

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
   

  
	
   

  	
  Name:

  
	
   

  	
  Title:

  
						

 

PLEASE FAX A COPY OF THE COMPLETED AND
EXECUTED NOTICE AND QUESTIONNAIRE, AND RETURN THE ORIGINAL BY OVERNIGHT MAIL,
TO:

 

Patton Boggs LLP

 

2001 Ross Avenue, Suite 3000

 

Dallas, TX 75201

 

Fax: 214.758.1550

 

Attn: Akash D. Sethi, Esq.

 

23EXHIBIT 4.6

 

TO:                            The
Purchasers of Intrusion Inc., Series 3 5% Convertible Preferred Stock and
Warrants

 

To Whom It May Concern:

 

This letter will confirm my agreement to vote all
shares of Intrusion Inc., a Delaware corporation (“INTZ”) voting stock
over which I have voting control in favor of any resolution presented to the
shareholders of INTZ to approve the issuance, in the aggregate, of more than
19.999% of the number of shares of common stock of INTZ outstanding on the date
of closing pursuant to that certain Securities Purchase Agreement, dated December 2,
2005, among INTZ and the purchasers signatory thereto (the “Purchase
Agreement”) and the other agreements entered into in connection therewith
or as otherwise may be required by the applicable rules and regulations of
the Nasdaq Stock Market (or any successor entity).  This agreement is given in consideration of,
and as a condition to enter into such Purchase Agreement and is not revocable
by me.

 

 

	
   

  	
  By:

  	
   

  
	
   

  	
   

  	
  Name of Shareholder:

  
	
   

  	
   

  	
  Percentage Beneficial
  Ownership:

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