United States Marine Corps Secures Semper Fi with Tumbleweed PKI; Tumbleweed PKI Validation Solution's Ability to Distinguish Friend from Foe in Real-Time Enabling Trusted Relationships Essential for Mission Critical Communications

Business Wire, Sept 13, 2005

About the Tumbleweed Validation Authority

Tumbleweed Validation Authority (VA) ensures the validity and integrity of highly valued and trusted transactions. Validation Authority is a Certificate Authority (CA) neutral, extensible server that utilizes multiple validation protocols for checking the validity of X.509 certificates within Public Key (PKI) environments. Validation Authority delivers a comprehensive, scalable, and reliable framework for validating digital certificates in real time, and can validate a certificate issued by any CA. It complies with Federal Information Protection Standard (FIPS) 140-l, DOD Joint Interoperability Testing Command, and Identrus standards. Additionally the Validation Authority is completing Common Criteria (ISO/IEC 15408) Evaluation Assurance Level (EAL-3) by the National Information Assurance Partnership (NIAP), a collaboration between the National Institute of Standards and Technology (NIST) and the National Security Agency (NSA).

About the United States Marine Corps

Established in 1775 by the Continental Congress, the United States Marine Corps (Marine Corps) is the only branch of the armed services specifically organized with air, land, and sea-based expeditionary fighting capabilities. Renowned as the "First to Fight," the Marine Corps is a force of more than 40,000 personnel that has a unique and complex mission, particularly with respect to the global war on terror. To this end, the organization is committed to exploiting a wide range of technologies to maintain its capabilities for responding to a broad range of contingencies and conflicts anywhere in the world. For additional information, go to www.usmc.mil

About Tumbleweed

Tumbleweed provides security software and appliances for email protection, file transfers, and identity validation that allow organizations to safely conduct business over the Internet. Tumbleweed offers these products in three comprehensive suites: MailGate, SecureTransport, and Validation Authority. MailGate provides protection against spam, viruses, and attacks, and enables policy-based message filtering, encryption, and routing. SecureTransport enables businesses to safely exchange large files and transactions without proprietary software. Validation Authority is the world-leading solution for determining the validity of digital certificates. Tumbleweed's enterprise and government customers include ABN Amro, Bank of America Securities, Catholic Healthcare West, JP Morgan Chase & Co., The Regence Group (Blue Cross/Blue Shield), St. Luke's Episcopal Healthcare System, the US Food and Drug Administration, the US Department of Defense, and all four branches of the US Armed Forces. Tumbleweed was founded in 1993 and is headquartered in Redwood City, Calif. For additional information about Tumbleweed go to www.tumbleweed.com or call 650-216-2000.

SAFE HARBOR STATEMENT

Tumbleweed cautions that forward-looking statements contained in this press release are based on plans and expectations as of the date of the press release, and that a number of factors could cause the actual results to differ materially from the guidance given at this time. These factors are described in the Safe Harbor statement below.