Kolpakov worked for FIN7 between at least April 2016 and June 2018, when he was arrested by Spanish law enforcement, before being extradited to the U.S. after a year, according to U.S. prosecutors. Prosecutors added that Kolpakov had been responsible for managing hacking teams in attacks targeted at U.S. businesses and other systems.
FIN7, which is also known as Carbanak, has been popular for stealing and selling point-of-sale system records and for utilizing business email compromise in its attacks. The hacking group has compromised more than 6,500 PoS systems from over 3,600 business locations across the U.S., according to the Justice Department.
"Moreover, FIN7 members, including Kolpakov, were aware of reported arrests of other FIN7 members, but nevertheless continued to attack US businesses," said the Justice Department.