The detection rule titled 'Auth0 Refresh Token Reused' aims to identify scenarios where a refresh token is reused, which poses a significant security risk as it could indicate that a token is compromised. This rule is considered of high severity due to the potential implications of such an event. The detection mechanism involves analyzing logs from Auth0 events. The rule is enabled to trigger when a reused refresh token is detected in the log entries, prompting an investigation into whether the action was warranted for a valid business reason or if it indicates malicious activity. This proactive detection helps ensure the integrity and security of the authentication process in identity management. Additionally, the system has a deduplication period of 60 minutes to prevent redundant alerts for the same incident. The associated runbook emphasizes the importance of re-evaluating user actions in the context of security best practices and organizational policies. Overall, the rule is vital in protecting against unauthorized access to secure resources by monitoring refresh token behavior.