U.S. puts $3 million reward for Russian cyber criminal

Evgeniy Mikhailovich Bogachev is under indictment for administering various versions of hacking software including Game Over Zeus. He is believed to be in Russia.

Since emerging in 2013, Cryptolocker has been used to attack about 200,000 computers, half of which were in the U.S. In its first two months, criminals extorted an estimated $27 million from victims, Deputy Attorney General James Cole said in June.

CNN