Summary: Microsoft has addressed a known issue with its machine learning model that incorrectly flagged legitimate Adobe emails as spam in Exchange Online. The issue led to users receiving alerts about potentially malicious URL clicks, causing inconvenience. Improvements to the machine learning logic have been implemented to prevent future occurrences of false positives.
Affected: Microsoft Exchange Online
Keypoints :
- Users faced issues with Adobe URLs being flagged as spam starting April 22, 2023.
- The machine learning model misidentified legitimate emails due to their similarity to known spam messages.
- Microsoft implemented Replay Time Travel (RTT) to remediate the impact and improve its ML logic to reduce false positive rates.
- This incident follows a history of similar issues, including previous false positives affecting user email delivery.