Until the site went off line some 35 hours ago, torrent distribution site Kickass Torrents was wide ly be lieved to be the most popu lar torrent site on the internet, having surpassed the long-troub led Pirate Bay in traffic years ago. Kickass Torrents was taken off line after the arrest of Ukrainian Artem Vaulin in Po land , who law enforcement are accusing of using the site to profit from copyright infringement. Copies of a US Federa l crimina l comp laint brought against Vau lin in the Northern District of I l linois revea l an interesting connection with another incredib ly controversia l investigation: the case brought against Ross U lbricht for the now-famous Si lk Road website. The connection between the Kickass Torrents investigation and the Si lk Road investigation comes in the form of a sing le individua l: Home land Security Investigator Jared Der-Yeghiayan. The Kickass Torrents crimina l comp laint is entire ly based on a sworn affidavit provided by Der-Yeg