KickassTorrents (short name KAT) torrent tracker was the most popular torrent tracker in a world since 2014, beating the The Pirate Bay. It was the most visited torrent site in many countries around the world, offering a wide range of torrents files with efficient search system. KickassTorrents pages visited daily more than a million users. As well as all the big torrent site, without exception, has changed domain names and server locations, but in 2016 the US authorities managed to close this resource. Currently, at internet, is found some copies of this torrent site.