The Internet Explorer hack used in Google's Chinese attack has been published on the web, security firm McAfee said.
George Kurtz, McAfee's chief technology officer said his researchers had seen code references which confirm it was published on at least one web site.
“The public release of the exploit code increases the possibility of widespread attacks using the Internet Explorer vulnerability,” warned Kurtz.“This attack is especially deadly on older systems that are running XP and Internet Explorer 6.” he said.
Microsoft admitted on Thursday that its browser was vulnerable to the remote code execution through the hack, and was beavering away on a patch for the flaw.
A miffed Google and a battered assortment of some 34 firms also believed to have been targeted in the attacks will be look askance up the hill at Ballmer towers in Redmond.