Has anyone ever heard of Echelon?
That the CIA (OSS) has been developing surveillance protocols and infrastructure since the WWII is a well known fact. In terms of back doors, hacking and illegally accessing someone's computer from anywhere they are about 50 years ahead of anyone.
Robert Maxwell, for peace sake! used to sell Trojan horse-infected computers given to him by the Mossad. And this goes back to the 70s.
Assume you are being watched and live life. They certainly can, and do. And when they can't, they run to daddy-FISA Court and get the legal coverage to rape your bytes. And we all know FISA never says no so...