An unnamed phone company recently resisted a National Security Agency demand for access to its subscribers’ data, according to court documents declassified Friday.

But on March 20, the Foreign Intelligence Surveillance Court rejected the company’s motion and ordered it to continue turning the records over to the NSA. The government redacted the name of the company and other information from the documents.

It was apparently the first time any phone company tried to fight the NSA’s controversial mass-surveillance program. A federal judge wrote last year that no phone company had resisted the program, which the NSA claims is authorized under Section 215 of the Patriot Act.

via A Phone Company Fought the NSA—And the NSA Won –