"I often write about all the excellent tools for testing the
security of Windows systems. There are excellent freeware, open
source and commercial tools that all run on the Windows OS. They
are, for the most part, easy to use and can ferret out a lot of
security vulnerabilities that would be next to impossible to find
otherwise. One tool that I haven't written much about--and based on
my informal research, one that most Windows administrators haven't
heard of--is a tool called BackTrack.
"BackTrack is actually an entire Slackware Linux-based operating
system with a suite of security tools that even the most die-hard
Windows-o-files can appreciate and benefit from..."