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Tumbleweed Press Releases

Tumbleweed Licenses Two Patents to NetIQ

Redwood City, CA – September 20, 2004 – Tumbleweed® Communications Corp. (NASDAQ:TMWD), a global leader in email security and secure data technologies, today announced that NetIQ has licensed Tumbleweed U.S. Patent No. 6,609,196 titled "Email Firewall with Stored Key Encryption/Decryption." and U.S. Patent No. 6,393,568 titled “Encryption and Decryption System and Method with Content Analysis Provision”, both for NetIQ’s MailMarshal Secure module. Terms of the agreement were not disclosed.

“We’re pleased to allow NetIQ to bring a broader choice of technology features to their MailMarshal Secure customers through our licensed technology,” said Jeffrey C. Smith, Tumbleweed’s CEO and chairman. “We maintain our commitment to further developing and enforcing our patent portfolio as our research and development team continues to create pioneering technology solutions."


About Tumbleweed Communications Corp.
A leading global email security company with more than 10 years in the business, Tumbleweed provides one of the deepest product lines and the most developed e-mail security architecture available. From our e-mail security suite, point solutions for spam, inbound and outbound filtering, to secure data encryption and certificate authentication, Tumbleweed has the solution enterprises and governments need to mitigate risk and increase network bandwidth. Tumbleweed customers include ABN Amro, Bank of America Securities, Catholic Healthcare West, JP Morgan Chase & Co., The Regence Group (Blue Cross/Blue Shield), Society for Worldwide Interbank Financial Telecommunication (SWIFT), St. Luke's Episcopal Healthcare System, the US Food and Drug Administration, and the US Navy and Marine Corps. Tumbleweed Communications 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 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 additional potential licensees of Tumbleweed’s intellectual property and revenue therefrom. 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 15, 2004, Form 10-Q filed May 10, 2004, and Form 10-Q filed August 12, 2004.

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

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