Microsoft Defender for Office 365 is changing the subject line format for end-user reported notification messages to improve readability and rule creation. The rollout starts mid-June 2024 and ends mid-July 2024. No action is required from users as existing settings remain unaffected.
Applies to: Exchange Online · Microsoft Defender XDR
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).