Our friends (and competitors) at Sophos blogged about a new threat that poses as a Windows Update and then infects unsuspecting users with a fake antivirus product. The update appears to be very real and is tricking users. While my colleagues at Sophos offer excellent advice to help people protect themselves (as I believe we

The security update won’t necessarily help users who have already been infected with the bootkit as TDL4 blocks the Windows Update service on x86 machines. As a result, infected x86 machines won’t be able to download and install the patch automatically.