The update limits access to certain PII data in Activity Explorer to admins with the 'Data Classification Content Viewer' role. It affects viewing source information and SIT context. Rollout begins early June 2024, with Public Preview and General Availability phases. Admins must be assigned the proper role to retain access.
Applies to: Microsoft 365 suite · Microsoft Purview
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).