Methbot and 3ve Taken Down by FBI With The Aid of Google and WhiteOps

Two global botnets, Methbot and 3ve have completely been shutdown and the culprits have been identified. Of the two botnets, the Methbot was shutdown in December 2016. 3ve, pronounced Eve was shutdown by the recent operations.
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The DOJ unsealed the indictments on Tuesday. They were against eight people from Russia and Kazakhstan accused of running the schemes, who bilked millions of dollars out of the advertisers of all levels over several years.
The FBI, collaborated with White Ops, Google and a group of other ad tech companies to detect and demolish the operations. Methbot was shut down in December 2016, close to the time White Ops went public with the more than 4,000 compromised IP addresses involved in the plot.

Sandeep Swadia, the CEO of White Ops, called it a “very complex, ever-shifting maze,” while Scott Spencer, a Google product manager, labeled it a “multiheaded beast” in exclusive interviews with BuzzFeed News.

The accused are Aleksandr Zhukov, Boris Timokhin, Mikhail Andreev, Denis Avdeev, Dmitry Novikov, Sergey Ovsyannikov, Aleksandr Isaev, and Yevgeniy Timchenko. Three of the men have been arrested and are awaiting extradition to the United States, while the rest remain at large. The details are available here.
One could get more information on this complex issue at the Buzzfeed.
Also here is a white Paper on the subject, very interesting read.