A federal judge tells the company to comply with the FBI's warrantless National Security Letter requests for user details, despite ongoing concerns about their constitutionality.
Yahoo, Google, Microsoft, Facebook want clearance to disclose what type of national security info requests they get.
Documents unsealed by a federal court show Microsoft successfully litigated an information request from the FBI on one of its cloud customers.
Secret lawsuit in Manhattan filed last month asks judge to force Google to cough up user data without a search warrant. A different court has already ruled that the process is unconstitutional.
Proposal that supposedly increases oversight of the National Security Agency instead could hinder companies trying to challenge warrantless demands for their confidential customer data.
A recent court filing by the Justice Department redacts Google's name in all instances but one, finally making official what had been an open secret.
In its Transparency Report, the company starts including some information on national security letters from the FBI, which seek data on some Web users with Google accounts.
It's the first major company to openly challenge FBI's warrantless data-gathering known as national security letters, which authorize a gag order ruled unconstitutional by a federal judge.
Tech companies and privacy groups petition the White House and Congress, urging "greater transparency" over secret demands for accessing private user data.
The president says a court OK will be required for the secretive spy agency to access data on calls placed and received and that the database should be held by a still-to-be-determined third party.