Which report detail is important for compliance and auditing in CyberArk?

The detail that is crucial for compliance and auditing in CyberArk is the list of user activities. This report provides a comprehensive view of actions taken by users within the CyberArk environment, thereby supporting the auditing process. It captures important information such as login attempts, access to passwords, and modifications made to safes or accounts. This kind of detailed tracking is essential for regulatory compliance since it allows organizations to demonstrate that they monitor and control access to sensitive information appropriately.

Access and activity logs help in maintaining accountability and tracing unauthorized actions if they occur, thus forming a significant part of an organization's audit trail. Regularly reviewing user activities aids in ensuring that access policies are being followed correctly and helps identify potential security incidents more promptly.

Other options, while they provide varying degrees of information, do not contribute as directly to compliance and auditing requirements. For instance, the list of users' emails, safes' warranties, or the status of safes (active/nonactive) do not deliver the necessary insights for tracking compliance with security policies or regulations.