Sophos labs are researching how prominent Linux based botnet controllers are and would appreciate your help. If you donít run anti-virus on your Linux boxes, we would like to invite you to run a tiny rudimentary scanner we have developed whose sole job is to look for Linux/Rst-B infections. Note that running this tool will not help you if you are infected with any other malware, so we strongly encourage you to consider running an up-to-date antivirus scan to ascertain the real health of your system.

The story and download link: Botnets, a free tool and 6 years of Linux/Rst-B