From: Gregg N 

Gary Britt wrote:
> What is Windows Defender??

It's Microsoft's antispyware software that is currently in beta.
Coincidentally, Microsoft is currently promoting it on their home page. If
it is gone by the time you look, you can get it here:

http://www.microsoft.com/athome/security/spyware/software/default.mspx

MS purchased it from a company called Giant, whose product I understand was
generally well-regarded. It seems to be okay. I have never had either it or
AdAware find anything of consequence on my computer.

It uses Windows Update to provide periodic updates to its signature file.

Also see

http://en.wikipedia.org/wiki/Windows_Defender

Gregg

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