"This appears to be the first attempt yet by any piece of malware to disable Microsoft AntiSpyware," Graham Cluley, a senior technology consultant at Sophos, said in a statement. "As Microsoft's product creeps out of beta and is adopted more by the home user market, we can expect to see more attempts by Trojan horses, viruses and worms to undermine its effectiveness."More details at ZDNet
Trojan attacks Windows AntiSpyware

Security experts warn for a new trojan that disables Microsoft's new AntiSpyware program. The trojan dubed Bankash-A is the first piece of malicous software to attack Windows AntiSpyware