Critical Security updates to Microsoft Windows, IE, Framework and other products became available on Patch Tuesday.  Users should promptly update to enjoy best levels of protection.  The Internet Storm Center has a “PATCH NOW” rating on IE due to zero day attacks circulating in the wild.

http://technet.microsoft.com/en-us/security/bulletin/ms14-Feb

https://isc.sans.edu/diary/February+2014+Microsoft+Patch+Tuesday/17615