Microsoft: Don't press F1 key; Cisco outlines security strategy

Microsoft told Windows XP users today not to press the F1 key when prompted by a Web site, as part of its reaction to an unpatched vulnerability that hackers could exploit to hijack PCs running Internet Explorer. Also, Cisco on Monday outlined its security product-development strategy aimed at providing a new type of "always on" security protection for mobile devices as well as a way to establish controls over cloud-computing applications used by the enterprise. (4:27)