Risk Level 1: Very Low
W32.Extrat.B is a worm that spreads by copying itself to removable drives and P2P networks.
Initial Daily Certified version of virus definitions for Norton security products was released on February 11, 2014 revision 003. It should be noted that users with the older versions of Norton Internet Security are limited to Daily LiveUpdate definitions. For more information, go to the page where the are described virus definitions available for Norton products.
