For those of you that use Trillian 2.01. Their is a new released out 2.011.
24 February 2004 : Security Patches Released
A patch is available for all versions of Trillian and Trillian Pro to address recently discovered security vulnerabilities. Specifically, potential overflow conditions existed in the Yahoo! packet parsing routines and AIM direct connection routines. We encourage all users to download the patch.
http://www.ceruleanstudios.com/news_press/