Older Windows update urged

 Older versions of Microsoft's Windows Operating System, think Windows XP and Windows 7, are vulnerable to yet another malware attack. This attack can and does act like a worm - malware that duplicates itself computer to computer.

 Microsoft released patches and updates today for both XP and Windows 7. Windows 7 and XP are used in many external enterprise networks. If a user with XP or Windows 7 visits one of these sites, or has new or existing network connections to an infected site, their system could become infected.