SI-6: Security and Privacy Function Verification

From NIST's SP800-53:

a. Verify the correct operation of [Assignment: organization-defined security and privacy functions]; b. Perform the verification of the functions specified in SI-6a [Selection (one or more): [Assignment: organization-defined system transitional states]; upon command by user with appropriate privilege; [Assignment: organization-defined frequency]]; c. Alert [Assignment: organization-defined personnel or roles] to failed security and privacy verification tests; and d. [Selection (one or more): Shut the system down; Restart the system; [Assignment: organization-defined alternative action(s)]] when anomalies are discovered.