Kahn Gauthier Swick, LLC ("KGS") announces that it has filed suit against Sourcefire, Inc. ("Sourcefire" or the “Company”) (NasdaqGM:FIRE - News), in the United States District Court for the District of Maryland, on behalf of shareholders who purchased shares of the Company in connection with its Initial Public Offering ("IPO") on or about March 9, 2007, or thereafter in the open market. KGS has expanded the lawsuit’s defendants beyond the Company, Board of Directors and CFO, to include the underwriters involved in the Offering (including, Morgan Stanley, Lehman Bros., UBS Securities and Jeffries & Co.), who are each charged with including or allowing the inclusion of materially false and misleading statements in the Registration Statement and Prospectus issued in connection with the IPO, in direct violation of the Securities Act of 1933.

If you purchased shares of Sourcefire in connection with the IPO or if you purchased shares thereafter in the open market, you are urged to contact Lewis Kahn, Managing Partner, KGS, toll free 1-866-467-1400, ext. 100, via cell phone at 504-301-7900, or by email at the link above to learn about your legal rights and how this action may benefit you.