MC1046168 — Microsoft Defender for Office: "Threat classification" in Mail flow status summary and Threat protection status reports

Microsoft Defender for Office is introducing "Threat classification" into the Mail flow status summary and Threat protection status reports to better understand email attack intent. The rollout began in mid-March 2025 and will complete by late May 2025. No admin action is required, but reviewing current configurations and notifying users is recommended.