What does OMB Circular No A-130, Appendix III require federal agencies to do?

OMB Circular No A-130, Appendix III requires federal agencies to review security controls every three years as a part of enhancing information security management. This requirement is aimed at ensuring that agencies consistently evaluate and update their security measures to protect federal information systems effectively. Regular reviews of security controls are critical for identifying any vulnerabilities and ensuring compliance with established security standards and practices. It emphasizes the importance of maintaining a robust security posture over time, considering that threats and technological environments evolve. This approach helps foster a continuous improvement cycle in information security practices within federal agencies.