ThreatMon

ThreatMon is a powerful, easy-to-use Windows based utility to protect your computer from damaging effects while surfing the Internet.

As a security tool, ThreatMon provides real time detection of malicious attack and protection of your privacy.
ThreatMon can run on the following OS:
Windows 2000 Professional (any service pack)
Windows 2000 Server and Advanced Server with any service packs.
Windows XP Professional, SP1 and SP2.