EDR and ESPM solve different parts of the problem.
EDR is designed to detect and respond to suspicious activity. It can show process execution, network connections, persistence, and what an RMM tool does after it starts. However, a legitimate RMM being used by an attacker can look very similar to the same RMM being used by IT. The software is signed, connects to the real vendor, and may not perform obviously malicious actions immediately.
That leaves EDR with a difficult question: Should this RMM be running on this endpoint at all? EDR telemetry alone usually cannot answer that with confidence.
ESPM, through RMM Guard, addresses the missing control. It builds an inventory of RMM and remote-access tools across Windows endpoints and provides context such as the affected endpoint, installation location, last-seen information, certificates, and hashes. This lets an organization establish what is expected, identify tools that do not belong, and take action before the tool is used for a wider attack.
Where RMM Guard Blocking mode is available and enabled, rejected RMM tools can be prevented from executing on endpoints that are ready for enforcement. This is prevention and posture control—not just detection after execution.
How this applies to incidents
In many incidents, EDR can help investigate RMM activity, including process execution and any follow-on actions. But EDR alone would not necessarily know that an RMM enrolled into an attacker-controlled tenant, and it would not know it was unauthorized simply because the software itself was legitimate.
Where ESPM/RMM Guard is enabled, the activity is surfaced as an unexpected or new RMM for review. If an endpoint has completed the required learning and readiness process and Blocking mode enabled, a rejected RMM will not be allowed to execute
This reduces the attacker’s opportunity to establish or maintain remote access.
A simple way to explain the difference
EDR tells us what a program is doing. ESPM/RMM Guard helps us decide whether that program should be there in the first place, and, where enforcement is enabled, can stop an unauthorized RMM from running.
The two products work together:
- EDR: Detects suspicious behavior and supports investigation and response.
- ESPM/RMM Guard: Establishes the expected RMM baseline and adds targeted prevention for unauthorized RMM tools.