10/6: Backdoor.Tidserv!gen Targets Encrypted Files

Backdoor.Tidserv!gen is a heuristic detection for files that may have been obfuscated or encrypted in order to conceal themselves from antivirus software. Files detected as Backdoor.Tidserv!gen are likely to belong to the Backdoor.Tidserv family of Trojans.

More information can be found at this Symantec page.