What is the most suitable approach to evaluate the effectiveness of security controls?

Ongoing assessments and audits are vital for effectively evaluating security controls because they provide continuous and systematic review of the security measures in place. This approach allows organizations to identify vulnerabilities, ensure compliance with policies and regulations, and adapt to new threats or changes in the operational environment. By regularly conducting assessments and audits, security teams can evaluate the performance of existing controls in real-time, identify areas for improvement, and validate that the security measures are functioning as intended.

This method not only highlights strengths and weaknesses but also helps in maintaining an updated security posture, ultimately leading to a more resilient security framework. It fosters a proactive security culture by emphasizing the importance of consistent evaluation over reactionary measures that may occur with sporadic reviews or enhancements based on isolated incidents. Thus, ongoing assessments and audits are integral to ensuring that security controls remain effective against evolving threats.