KickassTorrents founder Artem Vaulin of the Ukraine was arrested in Poland on Wednesday where he will face extradition to the United States.
He was charged with commiting copyright infringement and conspiracy to commit money laundering.
Federal agents identified him by posing as an advertiser, with an undercover agent from the US Internal Revenue Service buying an ad on KAT in March 2016 through a “Mr White” at $300 per day.
Initially, they were given Latvian bank account details for payment.
In May, the agent was given new banking details for an account in Estonia – with which the US has a Mutual Legal Assistance Treaty.
Investigators got the bank records and were able to link the IP address of an iTunes transaction to one that was used to log into the KAT Facebook account.
Using the IP address, they were able get the email address Vaulin used on iTunes ([email protected]).
The email account contained information which established probable cause of a criminal conspiracy.