The 'Duo Admin Policy Updated' detection rule is designed to monitor changes made by administrators within the Duo Security platform. The specific trigger for this rule is an update to user authentication policies by any Duo administrator. The rule focuses on events labeled as 'policy_update' and is enabled to track only significant changes that could impact user authentication workflows. It is crucial for maintaining security integrity and ensuring that policies conform to the organization's best practices. When an update occurs, the relevant logs are analyzed to ensure that the policy updates align with expected behavior, and alerts are raised accordingly. For additional context, the rule includes specific information regarding alterations such as the administrator's email and the modification details of various authentication settings. The severity of the detection is marked as medium, signaling that while this isn't a critical event, it still requires careful monitoring to ensure compliance and security. Furthermore, the rule logs unrelated activities like admin logins that do not signify an update, thereby preventing noise in alerts. This situational awareness is vital for security teams to prevent unauthorized modifications and maintain a secure authentication posture.