Blue Coat Appliances Protect Against Critical QuickTime Vulnerability That Gives Hackers Control of Computers.

ProxySG Appliances Prevent Exploit Affecting iTunes and Other Applications Using QuickTime From Turning Computers Into Bots or Hosts for Spyware

SUNNYVALE, Calif. -- Blue Coat Systems, Inc. (Nasdaq:BCSI), a leader in WAN Application Delivery and Secure Web Gateway, today announced that its Blue Coat[R] ProxySG[R] appliances protect against the recently discovered security vulnerability in QuickTime software, a technology used with iTunes and other PC and Mac media applications. Malicious content disguised as or integrated with music or video that is accessed through QuickTime is automatically detected by ProxySG appliances deployed at a company or organization's Internet gateway and is prevented from gaining control of individual computers. To date, there is no patch or fix for this QuickTime software vulnerability, and Blue Coat ProxySG appliances currently may be the only available solution to provide protection from this vulnerability.

The QuickTime vulnerability potentially enables a criminal or hacker to take "root control" of an individual computer and to convert it into a so-called "zombie" used for malicious purposes as a part of a botnet or to plant spyware, such as framegrabbers or keyloggers, which can monitor and steal personal information. The vulnerability affects version 7.x of QuickTime software and results from a data boundary buffer overflow error when the QuickTime software processes Real Time Streaming Protocol (RTSP) replies.

"ProxySG appliances are a powerful solution for protecting against Web threats, including spyware, viruses and malicious code," said Mikko Valimaki, chief scientist, Blue Coat Systems, Inc. "Our appliances have visibility and understanding of users, content and applications and can use this information to apply appropriate controls. They can accelerate legitimate business-critical applications, manage or mitigate the effect of non-business applications and stop malicious traffic dead in its tracks."

ProxySG Appliances - Combining Security, Control and Acceleration

ProxySG appliances protect enterprises or organizations against malware, including viruses and spyware, provide URL filtering, anti-phishing capability, and manage the use of Internet applications for compliance with policy or for bandwidth consumption, including instant messaging, streaming media and peer-to-peer file sharing. ProxySG appliances also accelerate business-critical applications or content at the Internet gateway or across an organization's Wide Area Network (WAN). ProxySG appliances provide broad coverage for popular web protocols, including HTTP, SSL, FTP, SOCKS, IM, P2P and Streaming Content (RTSP, MMS) for an integrated secured web gateway solution.

About Blue Coat Systems

Blue Coat secures Web communications and accelerates business applications across the distributed enterprise. Blue Coat's family of appliances and client-based solutions - deployed in branch offices, Internet gateways, end points, and data centers - provide intelligent points of policy-based control enabling IT organizations to optimize security and accelerate performance between users and applications. Blue Coat has installed more than 30,000 appliances worldwide and is ranked #1 by IDC in the Secure Content and Application Delivery market. Blue Coat is headquartered in Sunnyvale, California, and can be reached at [phone] or www.bluecoat.com.

About the QuickTime Vulnerability

For more information about the QuickTime vulnerability, please refer to US-Cert VU#659761 and http://www.kb.cert.org/vuls/id/659761.

FORWARD LOOKING STATEMENTS: The statements contained in this press release that are not purely historical are forward-looking statements, including statements regarding Blue Coat Systems' expectations, beliefs, intentions or strategies regarding the future, and including statements regarding the capabilities and expected performance of Blue Coat Systems' products. All forward-looking statements included in this press release are based upon information available to Blue Coat Systems as of the date hereof, and Blue Coat Systems assumes no obligation to update any such forward-looking statements. Forward-looking statements involve risks and uncertainties, which could cause actual results to differ materially from those projected. These and other risks relating to Blue Coat Systems' business are set forth in Blue Coat Systems' Form 10-K for the year ended April 30, 2007, and Form 10-Q for the quarter ended October 31, 2007, filed with the Securities and Exchange Commission.

Blue Coat and other applicable product names are trademarks or registered trademarks of Blue Coat Systems, Inc. in the United States and other countries. All other trademarks, trade names or service marks used or mentioned herein belong to their respective owners.