As an administrator, you can view the Reporting section in the Google Admin console to examine potential security risks, analyze your team's use of collaboration, diagnose configuration problems, track who signs in and when, analyze administrator activity, understand how users create and share content, and more. You can view domain-level data alongside granular, user-level details through graphs and tables.
For a description of the different types of reports that are available, see Monitor usage and security with reports.
Stay on top of important events such as suspicious login attempts or service setting changes made by other administrators, by enabling Admin email alerts. For details, see Admin email alerts & system-defined rules.