[EGreg]

How can people use them for long if they get a knock on the door, from authorities who noticed an anomaly?

[Hoodedcrow]

What anomalies are they looking for? There are protocols that make traffic look like something mundane.

[EGreg]

Have you seen what classifier AI can do?

Go make a protocol that fools all the AIs from every angle, that are scanning 24/7. They can get you on the metadata pattern alone, nevermind even the content.