The Electronic Frontier Foundation (EFF) filed a class-action lawsuit against AT&T on January 31, 2006, accusing the telecom giant of violating the law and the privacy of its customers by collaborating with the National Security Agency (NSA) in its massive, illegal program to wiretap and data-mine Americans' communications.

In May, 2006, many other cases were filed against a variety of telecommunications companies. Subsequently the Multi-District Litigation Panel of the federal courts transferred approximately 40 cases to the Northern District of California federal court.

While the Multi-District Litigation (MDL) is complex, EFF’s records indicate that there are currently 47 cases pending in the MDL overall, with a range of legal theories, plaintiffs and defendants. The cases are all assigned to the Chief Judge of the Federal District Court of Northern California, Hon. Vaughn Walker.

This is the status update of these cases as of April 23, 2008.