Post-compromise security asks not only what an attacker could observe during compromise, but whether future communication becomes protected again after a secure key update.
It assumes the attacker no longer persistently controls the endpoint. Device remediation, revocation, fresh keys and visible state transitions therefore belong to the operational process.
Three verification questions
- 01Which event restores security?
- 02Are compromised devices excluded?
- 03Is the new trust state visible to users?