Mostly just referring to PRISM and the like. Also, over the years, we've seen a few instances where big companies have publicly fought National Security Letters

Mostly just referring to PRISM and the like. Also, over the years, we've seen a few instances where big companies have publicly fought National Security Letters or gag orders, so I think it's a safe guess that plenty of other stuff like that goes on behind the scenes without ever coming to the public's attention.