Important Windows Update to Combat Flame
Malware authors have been spoofing software companies’ digital certificates for years, to gain the trust of potential victims. While this is scary, this isn’t news. What is news is that the Flame malware has used this spoofing technique to try to intercept the Microsoft Update system in order to stealthily spread itself.
http://www.intego.com/mac-security-blog/important-windows-update-to-combat-flame/