Microsoft announced that Wednesday, it successfully shut down another giant botnet that's been spreading malware around the Web with the aid of perhaps as many as a million corrupted PCs.

The takedown of the latest botnet, known as Rustock, was similar to the Waledac botnet that the company helped bring down last year, according to a post to the Microsoft (NASDAQ: MSFT) on the Issues blog on Thursday, by Richard Boscovich, a senior attorney on the company's Digital Crime Unit (DCU).
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