Google, Yahoo and Facebook push to reveal more details about how often the U.S. government collects user information for national security purposes. The three tech companies have filed motions with the U.S. Foreign Intelligence Surveillance Court, asking for the right to publish more statistics about national security requests in the wake of Prism's revelations.

Facebook and Yahoo filed separate, motions Monday, while Google and Microsoft, have similar motions pending with the court.

All four companies were identified as giving the National Security Agency access to customer data under Prism. Facebook and Yahoo say they want to correct false claims and reports about what they provide to the government. They argue they have a free-speech right to publish aggregate data on national security orders.

"Google’s reputation and business has been, and continues to be, harmed by the false and misleading reports in the media, and Google’s users are concerned by the allegations," Google’s motion says. "Google must respond to such claims with more than generalities."

"The actions and statements of the U.S. government have not adequately addressed the concerns of people around the world about whether their information is safe and secure with Internet companies," Facebook general counsel Colin Stretch said Monday.

"We filed the suit today because we are not authorized at present to break out the number of requests, if any, that we receive for user data under specific national security statues," Yahoo general counsel Ron Bell said in a blog post.