Researchers take down Koobface servers.

Late Friday afternoon, Pacific Time, the computer identified as the command-and-control server used to send instructions to infected Koobface machines was offline. According to Nart Villeneuve the chief research officer with SecDev Group, the server was one of three Koobface systems taken offline Friday by Coreix, a U.K. Internet service provider. “Those are all on the same network, and they’re all inaccessible right now,” Villeneuve said Friday evening.

Villeneuve recently published a detailed paper on Koobface.

Is this the end of Koobface?

Villeneuve has no illusions about Koobface being stopped. “I think that they’ll probably start up pretty soon, and they’ll probably try to recover as many of their bots as soon as they can,” he said.