How Did the Feds Get into Anti-ICE Activists' Signal Messages? (theintercept.com)

It was by compromising one of the ends of the end to end encrypted message. Agent in the GC, seized phone cracked with Cellebrite.

Odd article where they don't answer the question and then give broad advice for everyone to harden their Signal.

SimpleX would be a better choice for activism because there's a lot less metadata.