Definition
Policy enforcement is the process of ensuring that established rules, guidelines, and regulations are adhered to within an organization's IT systems and operations. It involves implementing mechanisms and controls that automatically or manually verify compliance and take corrective action when deviations occur. This practice is crucial for maintaining security posture, ensuring data integrity, and meeting regulatory requirements. For instance, a firewall enforcing access control policies by blocking unauthorized network traffic is a common example of policy enforcement. It differs from policy definition, which merely outlines the rules, by actively ensuring those rules are followed. Understanding policy enforcement is vital for cybersecurity professionals and appears on certifications like Security+, CISSP, and CCSP.