The Worst Security Hole Ever Found in Windows
The Worst Security Hole Ever Found in Windows
No I'm not into sensationalism or exaggeration, this probably is the WORST Microsoft hole of all time. All you need to do is view a custom made JPEG and your system can be fully hacked (assuming you use the PC as administrator, as most people do).
http://www.microsoft.com/technet/security/bulletin/MS04-028.mspx
Since it's so easy and "safe" to view a JPEG, nobody would think twice about looking at a webpage, or reading an email or viewing an office document.
The only thing that will save your arse is applying the patch, and hoping your virus scanner has definitions for this virus code, keep your fingers crossed.