A Ukrainian man will spend the next six years in a U.S. prison after being convicted of trafficking in stolen financial information, including more than 60,000 credit card numbers and online banking logins.

According to court documents, Ruslan Yeliseyev, of Odessa, Ukraine, made his living by selling hacked and stolen financial information on “underground Russian-speaking criminal websites.”

Court documents showed that the information that Yeliseyev sold was allegedly stolen from approximately 40,000 hacked computers, and included more than 62,000 credit card numbers, along with usernames and passwords to victims’ online banking accounts.

The stolen and trafficked personal information led to an estimated loss of $31 million from the victims’ online banking accounts and credit cards.

The Department of Justice did not identify which banks and credit card companies were the victims of the loss.

According to the DOJ, Yeliseyev was arrested while vacationing in Israel in 2016 and then extradited to the United States to stand trial.

And Friday, Yeliseyev was sentenced to six years in jail for his crimes.