A gaping security flaw in the latest versions of Symantec's anti-virus software suite could put millions of users at risk of a debilitating worm attack, Internet security experts warned May 25. Researchers at eEye Digital Security, the company that discovered the flaw, said it could be exploited by remote hackers to take complete control of the target machine "without any user action." "This is definitely wormable. Once exploited, you get a command shell that gives you complete access to the machine. You can remove, edit or destroy files at will," said eEye Digital Security spokesperson Mike Puterbaugh.