Meanwhile, a civil liberties group is suing telecom giant AT&T over its alleged role in assisting the National Security Agency spy on the phone calls and messages of US citizens without court warrants. The suit, filed by the Electronic Frontier Foundation — EFF — in U.S. District Court Tuesday, claims AT&T provided the NSA with extensive access to its networks and databases. EFF attorney Kevin Bankston said: “Our main goal is to stop this invasion of privacy, prevent it from occurring again and make sure AT&T and all the other carriers understand there are going to be legal and economic consequences when they fail to follow the law.”