VirnetX Announces Participation in 39th Annual Cowen and Company Technology Conference

SCOTTS VALLEY, Calif. – May 23, 2011 – VirnetX Holding Corporation (NYSE Amex: VHC), an Internet security software and technology company, today announced that Kendall Larsen, VirnetX CEO and President, will address the 39th Annual Cowen and Company Technology Conference at 8:45 a.m. EDT on Thursday, June 2, 2011 at the New York Palace Hotel in New York City.

About VirnetX

VirnetX Holding Corporation is an internet security software and technology company. The Company’s software and technology solutions, including its secure domain name registry and GABRIEL Connection Technology™, are designed to facilitate secure communications and to create a secure environment for real-time communication applications such as instant messaging, VoIP, smart phones, eReaders and video conferencing. The Company’s patent portfolio includes over 48 U.S. and international patents and pending applications. For more information, please visit www.virnetx.com.

Contact:

Greg Wood VirnetX Holding Corporation 831.438.8200 greg_wood@virnetx.com