I must say I find it interesting you say "cannot have missed" as I never heard of stateroom or bullrun before
> PRISM is a code name for a program under which the United States National Security Agency (NSA) collects internet communications from various U.S. internet companies - https://en.wikipedia.org/wiki/PRISM
> STATEROOM is the code name of a highly secretive signals intelligence collection program involving the interception of international radio, telecommunications and Internet traffic - https://en.wikipedia.org/wiki/Stateroom_(surveillance_progra...
> Bullrun (stylized BULLRUN) is a clandestine, highly classified program to crack encryption of online communications and data - https://en.wikipedia.org/wiki/Bullrun_(decryption_program)