IE Browser bug
We have learned of a vulnerability which makes it possible for hackers to take control of a user’s computer after it has been infected with malicious code. This vulnerability affects all versions of Windows released since 2001. A permanent fix is expected by May 13.
Please note that if you must use IE (for specific applications, for example) the attack will not work without Adobe Flash. The recommended solution for this is to upgrade to the most current version of Adobe Flash. The update can be found at http://helpx.adobe.com/security/products/flash-player/apsb14-13.html.
Other references:
http://www.cnet.com/news/stop-using-ie-until-bug-is-fixed-says-us/