Google was the first to go public, releasing an open letter asking the U.S. Department of Justice Tuesday for permission to publish the total number of government requests for national security information, arguing the figures would show the company does not give the government "unfettered access" to its users' data.
"Assertions in the press that our compliance with these requests gives the U.S. government unfettered access to our users' data are simply untrue," Google Chief Legal Officer David Drummond wrote in a letter to Attorney General Eric Holder and FBI Director Robert Mueller that was published on Google's public policy blog Tuesday.
Google's current transparency reports—which show the number of data requests it receives from authorities—do not include requests under the Foreign Intelligence Surveillance Act (FISA).
Microsoft issued a similar request soon after.
"Permitting greater transparency on the aggregate volume and scope of national security requests, including FISA orders, would help the community understand and debate these important issues," Microsoft said in an emailed statement.
Leading social network Facebook followed within minutes.
"We would welcome the opportunity to provide a transparency report that allows us to share with those who use Facebook around the world a complete picture of the government requests we receive, and how we respond," said Ted Ullyot, Facebook's general counsel, in an emailed statement. "We urge the United States government to help make that possible by allowing companies to include information about the size and scope of national security requests we receive, and look forward to publishing a report that includes that information."
Although President Barack Obama and senior U.S. intelligence officials have confirmed the existence of Prism, Google and other tech firms have vigorously denied that they give government agencies direct access to their servers or that it complies with overly broad requests for user data.