Hepting v. AT&T, 439 F.Supp.2d 974 (N.D. Cal., 2006), was a class action lawsuit argued before the United States District Court for the Northern District of California, filed by Electronic Frontier Foundation (EFF) on behalf of customers of the telecommunications company AT&T. The plaintiffs alleged that AT&T permitted and assisted the National Security Agency (NSA) in unlawfully monitoring the personal communications of American citizens, including AT&T customers, whose communications were routed through AT&T's network.