Ehhhhhhh, if we’re truly playing protocol-to-protocol, then iMessage with PQ3 is just as good.
They make different tradeoffs: For post-quantum confidentiality, PQ3 is currently the stronger protocol. For deniability, Signal still wins.
Neither has post-quantum auth, though.
Bryan (they/them)
There is complete industry consensus on this. Every reputable cryptographer on the planet agrees: Signal’s cryptographic protocols are the most secure in class. Period.
Just because your father's brother's nephew's cousin's former roommate told you otherwise doesn’t make it true
