The unpatched vulnerability in Microsoft’s Internet Explorer that created a stir Tuesday may be exploited by 10,000 or more malicious Web sites if all their owners update to the newest version of the WebAttacker exploit kit, a security researcher said Wednesday. First reported by Florida-based Sunbelt Software Tuesday, the bug has already been used to compromise PCs and load them with scores of adware and spyware programs, as well as other malicious code. Full Story