The three men - "Permaphrost," "Cranix," and "Linuxawesome" - are being accused of "multiple counts of copyright infringement", with Blizzard seeking not just damages but also a cut of the money the three received selling the hacks. The first two are from Canada, the third, Peru.
They also stand accused of encouraging others to infringe upon Blizzard's copyright, because "When users of the Hacks download, install, and use the Hacks, they copy StarCraft II copyrighted content into their computer's RAM in excess of the scope of their limited license, as set forth in the EULA and ToU, and create derivative works of StarCraft II."
Despite the overseas location of the three men, the case will be heard in a Los Angeles US District Court, as stated in the game's Starcraft II's end-user license.