Last month, Microsoft took matters into its own hands and sought a federal court order to seize computer servers that were hosting a botnet dubbed "Rustock." The company has set up its own digital crime unit to combat computer crimes and claims to have given technical help to federal investigators.
"There is clearly a strong public/private momentum happening in the fight against botnets and the Microsoft Digital Crimes Unit was happy to provide technical information from the lessons we learned from the recent Rustock and Waledac botnet takedowns to assist these agencies in their operation," Boscovich said.
Microsoft estimated that Rustock infected about 1 million computers and, at times, was capable of sending 30 billion spam email messages a day.
According to a posting on Microsoft's blog in March, "DCU [Microsoft's Digital Crimes Unit] researchers watched a single Rustock-infected computer send 7,500 spam emails in just 45 minutes -- a rate of 240,000 spam mails per day."