Emergency Windows patch too late for some
Security experts say they’ve already figured out ways to exploit the bug for which Microsoft issued an emergency patch last week. One Trojan horse is already spreading faster thanks to the loophole, though it was already in existence before the patch was announced.
The virus is most commonly named ‘Gimmiv.A’, though is also known as ‘Spy-Agent.Da’. It’s a fairly typical Trojan horse in that it looks for passwords and other data and then sends them to a remote computer.
However, it appears the creators recently modified it to search through computers on a local network to look for machines which haven’t had last week’s patch applied. It then exploits the bug, which is in the Windows system used to allow one computer to run activity on another machine (for example, with networked printers).