UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

        Date of Report (Date of earliest event reported): August 17, 2007

                                SOURCEFIRE, INC.
             (Exact name of registrant as specified in its charter)

                                    Delaware
                 (State or other jurisdiction of incorporation)

           1-33350                                        52-2289365
    (Commission File No.)                     (IRS Employer Identification No.)

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                            9770 Patuxent Woods Drive
                            Columbia, Maryland 21046

             (Address of principal executive offices and zip code)

        Registrant's telephone number, including area code: 410-290-1616

         (Former name or former address, if changed since last report.)
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Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

[ ]  Written communications pursuant to Rule 425 under the Securities Act (17
     CFR 230.425)

[ ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
     240.14a-12)

[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))




Item 8.01. Other Events.

On August 17, 2007 the Company  announced  that it has  acquired the ClamAV open
source network anti-virus project. A press release announcing the acquisition is
filed as Exhibit 99.1 hereto and is incorporated by reference herein.

On August 17, 2007,  the Company posted a series of frequently  asked  questions
(the "FAQs")  concerning the  acquisition of ClamAV on the Company's  website at
www.sourcefire.com.   The  FAQs  are  filed  as  Exhibit  99.2  hereto  and  are
incorporated  by  reference  herein.  No  other  information  contained  on,  or
accessible through, the Company's website is part of this report.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

                 Exhibit
                 Number                   Exhibit Description
            ------------------ -------------------------------------------------
                    99.1       Press Release, dated August 17, 2007, "Sourcefire
                               Acquires ClamAV Open Source Network Anti-virus
                               Project."

                    99.2       Frequently Asked Questions.




                                   SIGNATURES

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.

Date:  August 17, 2007                           SOURCEFIRE, INC.


                                                 By:     /s/ E. Wayne Jackson
                                                    ----------------------------
                                                         E. Wayne Jackson
                                                         Chief Executive Officer




                                  EXHIBIT INDEX

                 Exhibit
                 Number                   Exhibit Description
            ------------------ -------------------------------------------------
                    99.1       Press Release, dated August 17, 2007, "Sourcefire
                               Acquires ClamAV Open Source Network Anti-virus
                               Project."

                    99.2       Frequently Asked Questions.