2.5 Million PCs Victims of "Botnets," FBI Says

Hackers have remotely controlled about 2.5 million computers of unsuspecting owners to commit crimes using computer robot networks called "botnets," the FBI said. The bureau in 2005 launched Operation Bot Roast to stop this emerging type of cyber attack, which the FBI estimates has resulted in $20 million in losses and theft, including one scheme that bilked a Midwest financial institution out of millions.

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