You better read this:
“A new critical security vulnerability has been discovered by Microsoft that could enable software viewing JPEG image files (.JPG) to launch malicious code on a user’s computer. The security hole could be exploited by hackers or a future internet worm.
Microsoft is recommending that customers patch their computers against the security vulnerability immediately.
“JPEG images are commonly used for graphics on websites and digital photographs so this vulnerability is extremely serious,” said Graham Cluley, senior technology consultant for Sophos. “The message, however, is not to panic but to calmly patch your computers now before a virus writer or hacker tries to exploit the loophole and attack innocent users’ computers.”
A technical bulletin at www.microsoft.com/technet/security/bulletin/MS04-028.mspx describes the latest security problem in detail and includes links to patches supplied by Microsoft. ”
Source: Microsoft warns of critical JPEG image vulnerability
