Continuing its fight against botnets, Microsoft has helped the FBI take down the GameOver Zeus botnet, which was one of the most active banking trojan of 2013 affecting thousands of computers.
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Microsoft announced this week their recent operation to go after the Citadel criminal botnet has resulted in 88 percent of its servers being disrupted, with 40 percent of the PCs cleaned of malware.
Microsoft claims to have freed "at least 2 million PCs" from the criminal Citadel botnet that it went after earlier in June, although the people behind the botnet are still at large.
Microsoft has revealed details of a joint operation with the FBI to disrupt over 1,400 Citadel botnets, which it claims have caused over $500 million in losses for individuals and businesses.