Barence writes "Microsoft has quietly won court approval to deactivate 277 domain names that are being used to control a vast network of infected PCs. The notorious Waledac botnet is being used by Eastern European spammers to send 1.5 billion spam messages every day, and infect hundreds of thousands of machines with malware. In a suit filed in the US District Court of Eastern Virginia, Microsoft accused 27 unnamed defendants of violating federal computer crime laws. It further requested that domain registrar Verisign temporarily deactivate the domains, shutting down the control servers being used to send commands to the machines. The request was secretly approved by District Judge Leonie Brinkema, allowing the action to be taken covertly, preventing Waledac's operators from switching domains."