Seeking to stop the national surveillance program, EFF has sued AT&T sued for secretly collaborating with the National Security Agency to monitor all communications on AT&T's network.

"It appears the NSA is capable of conducting what amounts to vacuum-cleaner surveillance of all the data crossing the Internet, whether that be people's e-mail, Web surfing or any other data," whistle-blower Mark Klein, who worked for the company for 22 years, said in a statement released by his lawyers.

The suit is based in large part on the Klein documents, which detail secret spying rooms and electronic surveillance equipment in AT&T facilities.

Other documents under seal shows that fiber-optic cables from the secret room tapped into WorldNet Internet subscribers and instructed technicians how to connect cables to the secret room, Klein said. He said he was required to connect circuits that fed information to the secret room.

Related: Who else is reading your email

Source: EFF Press Release | AT&T Lawsuit |SeattlePi