In response to three security issues found by the Zero Day Initiative (ZDI) project, Ceruleanstudios released Trillian version 3.1.10.0. All users should update to the new version.
One security weakness is independent of the chat protocol, the other two affect MSN and AIM.
Security reports by ZDI:
Trillian AIM.DLL Long HTML Font Parameter Stack Overflow Vulnerability
Trillian Multiple Protocol XML Parsing Memory Corruption Vulnerability
Trillian MSN MIME Header Stack-Based Overflow Vulnerability
