Don't know if it is still used much. There is SecureDrop to facilitate communication between investigative journalists and sources/whistleblowsers via Tor that

Don't know if it is still used much. There is SecureDrop to facilitate communication between investigative journalists and sources/whistleblowsers via Tor that was at some point deployed by several prominent news organizations. https://en.wikipedia.org/wiki/SecureDrop https://en.wikipedia.org/wiki/SecureDrop