@paulfree14 @x0rz In terms of raw security, Signal's protocol is best but they do have the ability to add devices to an account, Australian-spy-style. But it will at least warn other users about "safety number changed". I overall recommend Signal, even though it's centralised and doesn't federate. XMPP's protocols look strong if used correctly.. but "used correctly" is always the failure point. So I'd never recommend to my tech-fail family.