CMMC Practice CA.2.158: Periodically assess the security controls in organizational systems to determine if the controls are effective in their application.
CMMC CLARIFICATION (Ref CMMC – Appendix B)
As organizations implement security controls, they should avoid a “set it and forget it” mentality. The security landscape is constantly changing. Reassess existing controls at periodic intervals in order to validate their usefulness in organizational systems. This will let you determine if the control is still meeting the needs of the organization. Set the assessment schedule according to organizational needs. Consider regulatory obligations and internal policies when assessing the controls.
Typical outputs of the practice include:
- documented assessment results;
- proposed new controls, or updates to existing controls;
- remediation plans; and
- new identified risks