The Endpoint Operations Management agents identify themselves to the server using client certificates. The agent registration process generates the client certificate.
The client certificate includes a token that is used as the unique identifier. If you suspect that a client certificate was stolen or compromised, you must replace the certificate.
You must have AgentManager credentials to perform the agent registration process.
If you remove and reinstall an agent by removing the data directory, the agent token is retained to enable data continuity. See Understanding Agent Uninstallation and Reinstallation Implications.