safe links

Safe Links is the Microsoft Defender for Office 365 feature that scans URLs in email and collaboration traffic before users click them. Coverage under this tag centers on service-health incidents and fixes, such as the September 2026 event in which Safe Links wrongly classified legitimate Google Search links as malicious and blocked them. Microsoft corrected the bad URL reputation classification and confirmed the mitigation worked, though propagation delays were possible. A key point for administrators is scope: that incident affected the cloud-based Safe Links service, not the Microsoft Defender Antivirus client built into Windows, so troubleshooting should follow the right product path.