Users are complaining that sites like Zoom and Google are being tagged as potentially dangerous, triggering a flood of alerts. To add to the problem, one netizen wrote that the Defender portal is "up and down," making it difficult to investigate the alerts.
Indeed, the Windows giant is aware of the problem, tweeting out a note at 1304 UTC that it's looking into the issue.
"We're investigating an issue where legitimate URL links are being incorrectly marked as malicious by the Microsoft Defender service," Redmond wrote. "Additionally, some of the alerts are not showing content as expected."