MC906488 — Microsoft Defender for Office 365: Microsoft Secure Score recommendation update for Spam confidence level

The Microsoft Secure Score recommendation for Spam confidence level (SCL) in Microsoft Defender for Office 365 will be updated. Post-update, the recommendation will only trigger if a transport rule explicitly sets SCL to -1. The rollout will start in early November 2024 and complete by early December 2024, potentially increasing the Secure Score for some organizations. No admin action is required before the rollout.