This report lists the Data loss protection (DLP) events in Exchange Online, when configured via Unified DLP Policy within Office 365. DLP policies are created and managed via the Security and Compliance console in Admin Center. It is crucial to monitor any events whereby data could be a risk, or could be non-compliant with your DLP policies. Events will only appear once policies are configured and the event is triggered.
Use the timeline to review any events in your environment, and apply advanced filters to drill down into the information, and find the event or activity you need. Any filters applied at the top of the timeline, will be reflected in the timeline view below.