With millions of unique visitors per day KickassTorrents (KAT) has become the most-used torrent site on the Internet, beating even The Pirate Bay.
Today, however, the site has run into a significant roadblock after U.S. authorities announced the arrest of the site's alleged owner.
The 30-year-old Artem Vaulin, from Ukraine, was arrested today in Poland from where the United States has requested his extradition.
In a criminal complaint filed in U.S. District Court in Chicago, the alleged owner is charged with conspiracy to commit criminal copyright infringement, conspiracy to commit money laundering, and two counts of criminal copyright infringement.