Microsoft filed the initial civil suit on March 19 against the 39 “John Does” under the Racketeer Influenced and Corrupt Organizations (RICO) Act. Microsoft said in its announcement of the Zeus case that it has seen more than 13 million suspected infections worldwide, 3 million of which are U.S.-based computers. The software giant also spearheaded takedowns of the Waledac, Rustock, and Kelihos botnets. This is the fourth anti-botnet operation led by Microsoft.”]