Media Release: Participation in DKIM Email Authentication

PGP CORPORATION ANNOUNCES PARTICIPATION IN JOINT CISCO-YAHOO EMAIL AUTHENTICATION SYSTEM

Palo Alto, CA/14 June, 2005 – PGP Corporation, a global leader in enterprise data security and encryption solutions, today announced it is part of a four-vendor core working group drafting the new DomainKeys Identified Mail (DKIM) email authentication specification. A combination of Yahoo"s DomainKeys and Cisco"s Internet Identified Mail technologies, DKIM addresses the growing problems of spam. Representatives from Yahoo, Cisco, PGP Corporation, and Sendmail comprise the core working group creating the new DKIM specification. Additional supporters include IBM, the Microsoft Exchange and Hotmail groups, and VeriSign.

“The goals of the DKIM working group are aligned with the PGP vision of eliminating barriers to widespread adoption of encryption,” said Jon Callas, CTO and CSO of PGP Corporation. “Users do not need to know an authentication solution is in place because no changes are required to the email client. The solution is domain-based rather than user-based, making it easier to implement and more secure. And the solution only identifies the original sender of an email message.”

The DKIM working group will present the specification to appropriate standards bodies as a proposed email sender-authentication standard. “The important thing to keep in mind is that DKIM is just the start of what will probably become a broader solution,” Callas said. “For example, DKIM doesn"t currently solve any authorization issues related to what users are allowed to do in an email system. What it does provide is a solid foundation on which we can layer additional pieces such as reputation systems, as required.”

About PGP Corporation
The global customer standard for encryption and digital-signature solutions, PGP Corporation develops, markets, and supports an integrated data security suite used by more than 30,000 enterprises, businesses, and governments worldwide, including 90% of the Fortune® 100 , 75% of the Forbes® International 100, and thousands of individuals and cryptography experts. Customers depend on PGP solutions for regulatory and audit compliance, to protect confidential company information, to secure customer data, and to keep identity information private.

During the past ten years, PGP® technology has earned a global reputation for innovative, standards-based, trusted solutions. The flexible PGP suite allows customers to phase-in gateway, partner, mobile or internal email security; data storage protection for laptops, desktops, and removable media; IM encryption; and FTP/batch transfer security using a single key management and recovery infrastructure. PGP Corporation is the only commercial security vendor to publish source code for peer review. Contact PGP Corporation at www.pgp.com or +1 650 319 9000.

Media & analyst contact for PGP Corporation:
John Tran
Neale-May & Partners
+1 650 328 5555 ext. 277
jtran at nealemay dot com

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