Cyberguard’s Webwasher Prevents Microsoft JPEG Exploit

Ft. Lauderdale, Fla. (September 22, 2004) – As reported last week, hackers are scheming about how to exploit the latest announced vulnerability in a number of Microsoft(r) operating systems and applications, including Microsoft Office(r) and several versions of Internet Explorer. The newly reported weakness allows malignant JPEG images to enter users’ computers undetected via e-mail, Web site and instant message downloads, enabling an attacker to gain control of the computer. CyberGuard Corporation (Nasdaq:CGFW), the technology leader in network security, prevents attacks that might leverage the imaging vulnerability with its Webwasher Content Security Management (CSM) solution.

Webwasher’s CSM solution has built-in provisions that defend against new threats from file types that have previously been considered “harmless.” On Friday, September 17, CyberGuard’s Webwasher activated deep file inspection for JPEG files. Within minutes, Webwasher customers around the world were protected via their next automatic security update of any Webwasher product.

“Technology is in a constant state of evolution. We could spend all day updating patches and scanning for new threats just to keep up,” explains Mike Wittig, CyberGuard’s president and chief technology officer. “Instead, Webwasher relies on a deeper examination of files to prevent malicious viruses, worms and Trojans from infiltrating networks. Our customers know they can rely on CyberGuard’s technology to protect their brand and their information assets.”

In addition to prescanning content for infected images, Webwasher version 5.0 and higher protect against malicious files by reconfiguring the generic body filter available in most Webwasher products, not only its antivirus product.

About CyberGuard Corporation

CyberGuard Corporation (Nasdaq:CGFW), the technology leader in network security, provides advanced Total Stream Protection(tm) solutions that protect the critical information assets of Global 2000 companies and governments worldwide. CyberGuard offers a broad line of scalable high performance firewall/VPN appliances, the Webwasher(r) suite of enterprise-class Web and e-mail content security solutions, sophisticated security processors and accelerator products for the SSL and IPsec markets, and industry leading embedded Linux(r) and Linux security solutions. Headquartered in Ft. Lauderdale, Florida, the company has branch offices and training centers around the world. More information about CyberGuard Corporation can be found at Forward-Looking Statements

This press release contains forward-looking statements that involve certain risks, uncertainties and factors, including without limitation, those described in the Company’s filings with the Securities and Exchange Commission that may cause the Company’s future actual results to materially differ from the Company’s current expectations. The Company assumes no obligation to update any forward-looking statements. CyberGuard(r) and Webwasher(r) are registered trademarks and Total Stream Protection(tm) and Global Command Center(tm) are trademarks of CyberGuard Corporation. All other trademarks are property of their respective owners.

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