FBI announces takedown of DNS Changer botnet, used to generate at least $14 million through click fraud and other fraudulent techniques. Six Estonian men accused of participating in the scheme were arrested Tuesday in Estonia. The botnet began operating in 2007, if not sooner, and by October 2011 had infected at least 500,000 computers in the U.S. The gang is accused of laundering its ill-gotten advertising fees through shell companies, including Rove Digital in Estonia, as well as others in Britain, Denmark, Estonia, and the United States.”]
Source: https://www.darkreading.com/attacks-breaches/fbi-busts-14-million-botnet-fraud-gang