Spybot - Search & Destroy can detect
and remove spyware of different kinds
from your computer. Spyware is a relatively
new kind of threat that common anti-virus
applications do not yet cover. If you
see new toolbars in your Internet Explorer
that you didn't intentionally install,
if your browser crashes, or if you browser
start page has changed without your
knowledge, you probably have spyware.
But even if you don't see anything,
you may be infected, because more and
more spyware is emerging that is silently
tracking your surfing behaviour to create
a marketing profile of you that will
be sold to advertisement companies.
Spybot-S&D is free, so there's no
harm in trying to see if something snooped
into your computer.