Anonymity and privacy for whistleblowers is gone with systems like Tempora https://en.wikipedia.org/wiki/...
The ability to track back any contact with a journalist removes all anonymity. The privacy of the message could be lost to malware.
GCHQ captured emails of journalists from top international media (19 jan 2015)
The US always thought it was legally covered with a free and unrestrained press.
Re "Nobody seems to know anything at all about any of these other programs"
The UK media could be the way to understand the tracking and results.