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THIRD NOTE MODIFICATION AGREEMENT

This Third Note Modification
Agreement is entered into by and between FORTIFIED HOLDINGS CORP. (Maker) and
THOMAS KEENAN VENTURES, LLC (Holder, and collectively with Maker, the
Parties), and is made effective as of the 14th day of May, 2008 (the
Effective Date). All capitalized terms not otherwise defined herein shall have
the definitions ascribed to them in the Note.

Recitals

|A. | Maker is the maker of a certain Term Loan Note made
      payable to Holder in the original principal amount of $5,000,000, dated
      effective September 13, 2007 and amended pursuant to (i) a certain Note
      Modification Agreement dated effective October 8, 2007, and (ii) a certain
      Note Modification Agreement dated effective March 28, 2008 (as so amended,
      the Note);
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|   |                                                                                                                                                                                                                                                                                                                                                                                                     
|B. | Holder continues to be the holder of the Note as of the
      date hereof;                                                                                                                                                                                                                                                                                                                          
|   |                                                                                                                                                                                                                                                                                                                                                                                                     
|C. | Through the time of execution of this Agreement, Maker
      has made payments under the Note in the aggregate amount of $1,250,000,
      and the remaining principal balance of the Note is $3,750,000,
  and                                                                                                                                                                                     
|   |                                                                                                                                                                                                                                                                                                                                                                                                     
|D. | The Parties desire to amend the principal payment
      schedule set forth in the Note.                                                                                                                                                                                                                                                                                                             

NOW THEREFORE, in consideration
of the mutual benefits to be obtained hereunder, upon full execution hereof, the
Parties agree as follows:

Agreement



|1. | The definition of Maturity Datecontained in Section 1
      of the Note is amended in its entirety to read as
  follows:
|-- | --------------------------------------------------------------------------------------------------------------------------



Maturity Datemeans July 1, 2009.

|2. | Section 3(b) of the Note is hereby amended in its
      entirety to read as follows:
|-- | ------------------------------------------------------------------------------------
|   |                                                                                     
|   | (b)                                                                                 



| | (i)   | two hundred fifty thousand dollars ($250,000) on or before
      November 19, 2007;
| | ----- | -----------------------------------------------------------------------------------
| |       |                                                                                    
| | (ii)  | five hundred thousand dollars ($500,000) on or before
      December 14, 2007;     
| |       |                                                                                    
| | (iii) | five hundred thousand dollars ($500,000) on or before
      April 2, 2008;         

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| | (iv)   | one hundred twenty five thousand dollars ($125,000) on or
      before June 1, 2008;                      
| | ------ | ----------------------------------------------------------------------------------------------------------
| |        |                                                                                                           
| | (v)    | one hundred twenty five thousand dollars ($125,000) on or
      before July 1, 2008;                      
| |        |                                                                                                           
| | (vi)   | one million dollars ($1,000,000) on or before November 1,
      2008;                                     
| |        |                                                                                                           
| | (vii)  | five hundred thousand dollars ($500,000) on or before
      March 1, 2009; and                            
| |        |                                                                                                           
| | (viii) | one (1) final installment in an amount equal to the then
      outstanding principal on the Maturity Date;

provided however, that if at
any time after April 1, 2008 and prior to the payment of the Note in full, Maker
receives equity or equity-linked financing yielding aggregate gross proceeds of
two million dollars ($2,000,000) or more (whether in one or more tranches, and
including the tranche of financing received in May 2008), then within three
business days following the funding of such financing transaction (or within
three business days following each tranche after the $2,000,000 threshold is
reached), there shall be due and payable to Holder an amount of Principal equal
to 25% of the amount by which the aggregate gross proceeds of such financing(s)
exceeds $2,000,000 (in addition to the scheduled interim payments specified
above). Notwithstanding anything herein to the contrary, unless sooner
accelerated as a result of the occurrence of an Event of Default, the entire
outstanding indebtedness under this Note, including, but not limited to,
outstanding principal together with any and all accrued and unpaid interest and
any other amounts due hereunder, shall be due and payable in full, in Dollars
and in immediately available funds on the Maturity Date.



|3. | Except as set forth above, the Note remains in full
      force and effect, in accordance with its original
terms.
|-- | ------------------------------------------------------------------------------------------------------------------



IN WITNESS WHEREOF, the Parties
have executed this Note Modification Agreement as of the date first written
above.

|FORTIFIED HOLDINGS CORP.: |  | THOMAS KEENAN VENTURES LLC:
|------------------------- |  | ---------------------------
|                          |  | By: TK Management LLC      
|                          |  |                            
|                          |  |                            
|By:                       |  | By:                        
|Kirk Hanson               |  | Brendan T.
      Reilly    
|Chief Financial Officer   |  | Sole Manager               

ACKNOWLEDGEMENT OF GUARANTOR

Fortified Data Communications,
Inc., a Delaware corporation and the Guarantor of the above-referenced Note,
hereby acknowledges and assents to the foregoing amendments to the

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Note and agrees (i) that the Note, as so amended, shall
continue to be guaranteed by Guarantor pursuant to that certain Continuing
Guaranty Agreement between Guarantor and TKV dated as of September 13, 2007 (the
Guaranty), and (ii) the Guarantors obligations under the Guaranty shall
continue to be secured pursuant to that certain Security Agreement between
Guarantor and TKV dated as of September 13, 2007; provided, however, nothing
herein shall be construed to require notice to or the assent of Guarantor in the
event of any other amendment of, or waiver with respect to, the Note.

| | FORTIFIED DATA COMMUNICATIONS, INC.:
| | ------------------------------------
| |                                     
| |                                     
| | By:  _______________________________
| | Kirk Hanson                         
| | Chief
      Financial Officer       

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