The detection rule identified as 'Zoom.PasscodeDisabled' focuses on the situation where the requirement for a meeting passcode within a Zoom user group has been disabled. This is considered a potential security risk as it allows for increased accessibility to Zoom meetings, possibly leading to unauthorized access. The rule is triggered by monitoring logs from Zoom operations that indicate changes in passcode settings for user groups, particularly focusing on the enabling or disabling of passcodes for the Personal Meeting ID (PMI). The MITRE ATT&CK reference TA0009:T1125 indicates that this is related to the techniques used for gathering user credentials. While this rule is categorized with a low severity, continuous monitoring and follow-up actions are advised, particularly with Zoom administrators, to ensure the use case for the passcode requirement is understood and justified. The associated runbook provides guidance on engaging with relevant personnel post-detection to clarify any administrative changes made regarding passcode usage in meetings.