Tumbleweed Named a Finalist in Four Categories for 2006 SC Magazine Awards; Tumbleweed's MailGate Email Firewall, MailGate Secure Messenger, and Secure Transport Short-Listed for the Prestigious Awards.

REDWOOD CITY, Calif. -- Tumbleweed(R) Communications Corp. (NASDAQ:TMWD), a leading provider of email security, managed file transfer, and identity validation appliance and software products, announced today that they have been selected as a finalist in four of SC Magazine's award categories including: Best Email Security Solution, Best Email Content Filtering Solution, Best Intellectual Property Solution, and Best Security Solution in Healthcare.

Tumbleweed's MailGate(R) Email Firewall was selected as a finalist for both the Best Email Security Solution and Best Content Filtering Solution based on its comprehensive inbound and outbound email protection. Benefits cited include reduction of risk for privacy and security breaches, increased employee productivity and quick and cost-effective installation.

In the Best Intellectual Property category, Tumbleweed's SecureTransport(TM) was named as a finalist based on its widespread use in over 20,000 sites around the world including eight of the top ten US banks, for protection of sensitive information.

MailGate Secure Messenger(TM) was recognized as a finalist in the Best Security Solution in Healthcare in the Excellence Awards for its ability to enable organizations to meet their own unique email security needs -- from compliance with government privacy regulations in Healthcare to enforcing corporate policies and protecting intellectual property.

"We are honored to be named a finalist in all four of these prestigious SC Magazine award categories," said John Thielens, CTO of Tumbleweed. "The 'Finalist' selection of Tumbleweed products by SC Magazine is an acknowledgement of the innovation and leadership we've committed to delivering to our customers and the industry. We would like to thank SC Magazine readers, judges and especially our customers for recognizing the value of Tumbleweed products."

Winners will be announced during the SC Magazine Awards US ceremony on February 14th, 2006 at the Fairmont Hotel, San Jose, CA.

SC Awards 2006

Recognizing technical excellence and professional achievement across a variety of different categories, the SC Awards is a truly unique program developed to bring attention to the industry's top products and highlight the professionals that have both created them and use them within their companies. These industry achievements are acknowledged during the US Awards ceremony taking place at the Fairmont, San Jose on February 14, 2006.

About Tumbleweed Communications Corp.

Tumbleweed provides security solutions for email protection, file transfers, and identity validation that allow organizations to safely conduct business over the Internet. Tumbleweed offers these solutions in three comprehensive product suites: MailGate, SecureTransport and Valicert Validation Authority. MailGate provides protection against spam, viruses and attacks, and enables policy-based message filtering, encryption and routing. SecureTransport enables business to safely exchange large files and transactions without proprietary software. Valicert 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.

Tumbleweed, MailGate, MailGate Email Firewall, MailGate Secure Messenger, SecureTransport and Validation Authority are either registered trademarks or trademarks of Tumbleweed Communications Corp. in the United States and/or other countries. All other trademarks are the property of their respective owners.

SAFE HARBOR STATEMENT

Tumbleweed cautions that forward-looking statements contained in this press release are based on current plans and expectations, 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.

Except for the historical information contained herein, the matters discussed in this press release may constitute forward-looking statements that involve risks and uncertainties that could cause actual results to differ materially from those projected, particularly with respect to the performance and functionality of Tumbleweed's MailGate Email Firewall, MailGate Secure Messenger and SecureTransport products. In some cases, forward-looking statements can be identified by terminology such as "may," "will," "should," "potential," "continue," "expects," "anticipates," "intends," "plans," "believes," "estimates," and similar expressions. For further cautions about the risks of investing in Tumbleweed, we refer you to the documents Tumbleweed files from time to time with the Securities and Exchange Commission, particularly Tumbleweed's Form 10-K filed March 16, 2005 and Form 10-Q filed November 2, 2005.

Tumbleweed assumes no obligation to update information contained in this press release, including for example its guidance regarding its future performance, which represents Tumbleweed's expectations only as of the date of this release and should not be viewed as a statement about Tumbleweed's expectations after such date. Although this release may remain available on Tumbleweed's website or elsewhere, its continued availability does not indicate that Tumbleweed is reaffirming or confirming any of the information contained herein.