30 day free trial of a-squared Anti-Malware.
Most security software is limited as it can only recognize Malware by the manufacturer signature, a-squared Anti-Malware does not identify damaging software purely on the basis of signatures, but also looks at how it behaves. This provides protection from the hundreds of new Trojans, Worms, Dialers, Rootkits and Spyware that appear every day.
Windows 98, ME, 2000, XP, 2003 Server and Vista.