Notorious spam botnet Rustock has gone quiet and security analysts aren’t sure why. Researchers with Symantec’s MessageLabs Intelligence, citing a Brian Krebs post on KrebsonSecurity, said the botnet ...

Microsoft on Thursday wrapped up its civil case against the still-unnamed controllers of the Rustock botnet and handed off the information gleaned during its investigation to the FBI. But the move ...

A series of raids last week submarined Rustock, Microsoft said, noting that it had filed a lawsuit that sparked the raids. Rustock would take control of a computer and use it to send spam. It is ...

Spam e-mail volumes dropped to a new low over the holiday season, sinking to their lowest levels since the November 2008 shuttering of rogue ISP McColo, Symantec security researchers found. According ...

Microsoft is trying to use its financial clout to bolster its investigation into who may be behind the notorious Rustock spambot. While the primary goal for our legal and technical operation has been ...

A report issued in the wake of Microsoft's legal take-down of the Rustock botnet suggests that the criminals behind the spam network were Russian.