McAfee Stinger is a standalone utility used to detect and remove specific viruses.Note that this is not a stand-alone anti-virus product to protect your system but rather a specialized tool to try to remove viruses from already infected systems. It's a nice tool that any tech would want to have on their thumb drives, etc. We have had good success with it. A FAQ is available here and recommended if you don't use tools like this on a regular basis.By default, it scans for rootkits, running processes, loaded modules, registry and directory locations known to be used by malware on a machine to keep scan times minimal.McAfee Stinger now includes Raptor BETA - a real-time behavior detection technology that monitors suspicious activity. Raptor leverages machine learning and automated behavioral based classification in the cloud to detect zero-day malware in real-time.