VirnetX Holding Corporation to Change Stock Ticker Symbol From "PASW" to "VNXH"

Scotts Valley, CA -- October 29, 2007 –- VirnetX Holding Corporation, a leader of secure real-time communication and collaborations technology, today announced that the company’s securities are now being traded under OTCBB:VNXH. Shareholders are advised to make note of this stock symbol change.

The stock ticker update will go into effect immediately. The symbol change follows the recent corporate name change from PASW, Inc. (previously OTCBB:PASW) to VirnetX Holding Corporation.

About VirnetX
VirnetX Holding Corporation, a leader of secure real-time communication and collaborations technology, is engaged in developing products for real-time communications such as Instant Messaging and Voice over Internet Protocol, commercializing its patent portfolio and providing contract research, prototyping, systems integration and technical services. For more information, visit us at www.virnetx.com.

Safe Harbor Agreement
Statements in this press release that are not statements of historical or current fact constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements involve known and unknown risks, uncertainties and other unknown factors that could cause the actual results of VirnetX to be materially different from the historical results or from any future results expressed or implied by such forward-looking statements. In addition to statements which explicitly describe such risks and uncertainties, readers are urged to consider statements labeled with the terms "believes," "belief," "expects," "intends," "anticipates," "will," or "plans" to be uncertain and forward-looking. The forward-looking statements contained herein are also subject generally to other risks and uncertainties that are described from time to time in VirnetX's reports and registration statements filed with the Securities and Exchange Commission.

Contacts
Bill Sliney, VirnetX
925-828-0934
bill_sliney@virnetx.com

Marla Kertzman, The Hoffman Agency
408-286-2611
mkertzman@hoffman.com