Seleznev cost the US about $170 million

Seleznev, also known by his hacker name Track2, is the son of a prominent Russian lawmaker, Valery Seleznev, and was arrested in July 2014 in the Maldives, and subsequently extradited to the US, for his involvement in cybercrime activities.

The crimes Seleznev was convicted of included hacking and data theft, credit card fraud, identity theft, and racketeering. His biggest offense was hacking into point-of-sale computers to steal credit card numbers and sell them on dark market websites.

The now forty-year-old hacker had stolen, as authorities found from his laptop, more than 1.7 million credit cards from more than 500 US businesses and had sent the data to servers that he controlled in Russia, Ukraine, and McLean, Virginia.