Bunker

A room that cannot be overheard, not even by us.

BUNKER is secure conferencing from Primesay. Voice, video, and in‑call messaging, end‑to‑end encrypted on your device and relayed through a server that holds no key to anything it carries. Leaving a call is not a permission change, it is a key rotation: MLS advances the group secret at every membership change, and each frame is sealed under AES‑256‑GCM. To search that keyspace is to count to 2²⁵⁶, and the thermodynamic floor on counting that far exceeds every joule the sun will ever emit. Not policy. Arithmetic.