Microsoft Windows Vista Security Guide
It's there for a longer time, but I still get many requests about it's avaiability... So, here it is: The Windows Vista Security Guide!
https://www.microsoft.com/technet/windowsvista/security/guide.mspx
Direct document download:
https://www.microsoft.com/downloads/details.aspx?FamilyId=A3D1BBED-7F35-4E72-BFB5-B84A526C1565&displaylang=en
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