The Waledac takedown is the culmination of a months-long investigation and legal strategizing on the part of Microsoft in an effort known as "Operation b49." The software giant received a temporary ...

Microsoft has several other botnets in its crosshairs, and believes it can use the same legal tactic against them that it deployed last week to strike at the Waledac botnet's command-and-control ...

Continuing its legal assault on botnet operators and the hosting companies that the criminals use for their activities, Microsoft has announced new actions against a group of people it contends are ...

Microsoft has seen a dramatic drop in the number of computers infected with Waledac, a piece of malicious software affiliated with a botnet that was once responsible for a massive amount of spam. In ...

A prominent security researcher today said he doubts Microsoft's take-down of the Waledac botnet would have any impact on spam levels, as the company claimed. "Waledac just is not a hugely prolific ...

Botnet fighters have another tool in their arsenal, thanks to Microsoft. The software vendor is giving law enforcers access to a special tool that keeps tabs on botnets, using data compiled from the ...