NIST 800-53 REV 5 • SYSTEM AND INFORMATION INTEGRITY
SI-4(9) — Testing of Monitoring Tools and Mechanisms
Test intrusion-monitoring tools and mechanisms {{ insert: param, si-04.09_odp }}.
CMMC Practice Mapping
No direct CMMC mapping
NIST 800-171 Mapping
No direct NIST 800-171 mapping
Related Controls
No related controls listed
Supplemental Guidance
Testing intrusion-monitoring tools and mechanisms is necessary to ensure that the tools and mechanisms are operating correctly and continue to satisfy the monitoring objectives of organizations. The frequency and depth of testing depends on the types of tools and mechanisms used by organizations and the methods of deployment.
Practitioner Notes
Periodically test your monitoring tools to verify they are actually detecting threats — run test scenarios and confirm alerts are generated.
Example 1: Run regular purple team exercises where your red team performs known attack techniques (from the MITRE ATT&CK framework) and your blue team verifies that each technique triggers the expected detection in the SIEM.
Example 2: Use automated testing tools like Atomic Red Team to execute individual ATT&CK techniques on test systems and verify your endpoint detection and SIEM rules catch them. Run these tests monthly and document any detection gaps you discover.