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VirnetX Recipient of Class “B” Internet Address Blocks

By May 6, 2009Press Releases

Advances ISP Partnerships through Its Exclusive Universal Secure Domain Name Registry

SCOTTS VALLEY, Calif. – May 6, 2009 – VirnetX Holding Corporation (NYSE Amex: VHC), a leader in secure real-time communications and collaborations technology, today announced that it has received the assignment rights for two Class “B” Internet Address Blocks. The rights for the two blocks of Internet Protocol version 4 (IPv4) are a result of a merger with PASW in 2007.  One block is registered with the American Registry for Internet Numbers (ARIN) and one block is registered with the Asia-Pacific Network Information Centre (APNIC).  The blocks together with the recent award of two key patents #7,490,151 and #7,418,504 further advances the development of VirnetX’s exclusive Universal Secure Domain Name Registry.

Each Class “B” Internet Protocol version 4 (IPv4) block of addresses will allow VirnetX to create security and license to virtually an unlimited number of Internet accessible devices. Each identified device will be secured by a unique VirnetX Secure Domain Name through its Secure Domain Name Registrar service which provides presence, connection, and relay services.

Class “B” Internet Address Blocks (Internet Protocol version 4- IPv4), is the current Internet standard addressing version that is expected to be depleted within 2-3 years.

“We are very pleased to secure assignment of these valuable and dwindling Class “B” Internet Address Blocks,” said Kendall Larsen, president and CEO of VirnetX.  “These address blocks accelerate our strategy to partner with Internet Service Providers to support their customers’ needs for securing all their end user devices.  The enormous expandability of these address blocks ensures that we will be able to support these partnerships as well as our own Universal Domain Name Registry with secure domain names.  Over the past 18 months, our scientists have made significant strides in   securing the Internet through our Gabriel Connection Technology™ and the assignment of these address blocks provides a key implementation element.”

The Class “B” Internet Address Blocks along with VirnetX’s strategic patent portfolio allow VirnetX to continue to set the standard for innovation in real-time communication security.  The company’s patent portfolio includes over 25 US and foreign patents and pending applications which specifically cover the company’s unique GABRIEL Connection Technology™.

About GABRIEL Connection Technology™

VirnetX’s GABRIEL Connection Technology™ is based on inventions that use a secure domain name system to automatically facilitate the receiving of domain names and the creation of query message infrastructure, creating a cryptographically signed transparent VPN. These fundamental inventions are covered by broad and basic patents that enable a secure connection between two disparate IP devices at various levels of domain name messaging, VPN parameter signing, automatic initiation, communication and connection negotiation. It also automatically links online databases connected to telecommunications.  Applications such as VoIP, instant messaging, video conferencing and file sharing-regardless of IP device, software or operating system-can benefit from integrating VirnetX’s Secure Domain Names.  For more information on VirnetX’s GABRIEL Connection Technology™, to download the whitepaper or view the Proof of Concept video, please visit:

About VirnetX

VirnetX Holding Corporation, a secure real-time communications and collaboration technology company, is engaged in commercializing its patent portfolio by developing a licensing program, as well as developing software products designed to create a secure environment for real-time communications such as instant messaging and Voice over Internet Protocol. For more information, please visit

Forward-Looking Statements

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 the Company 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 the Company’s reports and registration statements filed with the Securities and Exchange Commission, including those under the heading “Risk Factors” in the Company’s Annual Report on Form 10-K filed with the SEC on March 31, 2009.

Press Contact

Greg Wood
VirnetX Holding Corporation