The program for tapping data center links had the internal code name MUSCULAR and was a partnership with the British GCHQ, who actually did the intercepting. P

The program for tapping data center links had the internal code name MUSCULAR and was a partnership with the British GCHQ, who actually did the intercepting. PRISM was at first reported as some sort of direct access to the servers of certain American companies, but it turned out to be the code name for a joint program with the FBI for using FISA warrants to request data from those companies.