Potentially Malicious Windows File Extensions Listing
I just stumbled on this very handy listing of almost every known Windows file types that can be used to compromise a Windows box in one way or another. It's pretty ironic that this document has been made using Word because a vulnerability that allows attackers to install rootkits on a computer via Microsoft's Word was discovered on last Thursday. Don't worry, this file isn't part of the problem; its part of the solution. It contains over 200 file extensions and provides you with all the details needed to help you make an enlightened decision about whether you should block them or not.