FBI and Microsoft jointly neutralized botnet Citadel, by which criminals stole more than $ 500 million. This was reported by the newspaper The Financial Times.
Total number of computers connected by a network Citadel, the two organizations is estimated at five million cars. The network consisted of more than a thousand botnets, each of which, in turn, consisted of thousands of infected computers. Hacking network acted in more than 90 countries.
As stated by the company Microsoft, completely destroy the Citadel is impossible because of its scale and fragmentation. The company has recommended to use antivirus and more frequent updates your computer's OS.