Here’s something new… According to John Nack – official Adobe blogger – maliciously coded GIF files can cause crashes in Photoshop (I’m thinking other possible security risks as well).
There is a fix, however – so visit John Nack’s Blog to find the appropriate resolution to the problem:
http://blogs.adobe.com/jnack/2011/08/plug-in-security-fix-for-photoshop-cs5.htmlÂ