All news with #false positive tag

Microsoft Teams adds false-positive threat report option

🔔 Microsoft is adding a user-driven false-positive reporting capability to Microsoft Teams, allowing users to flag chat or channel messages they believe were incorrectly marked as security threats. The feature began a targeted rollout in September and is scheduled to reach general availability worldwide by the end of November 2025. It will be available to organizations using Microsoft Defender for Office 365 Plan 2 or Microsoft Defender XDR, and accessible on desktop, mobile, and web. Administrators can enable or disable the feature from the Teams admin center or the Microsoft Defender portal.

Microsoft Defender Bug Triggers False BIOS Update Alerts

⚠️ Microsoft is addressing a logic bug in Microsoft Defender for Endpoint that causes some Dell devices' BIOS firmware to be incorrectly marked as outdated, prompting unnecessary update alerts to users. The company says a fix has been developed and is being prepared for deployment, but it has not disclosed the regions or number of customers affected. Microsoft also recently resolved macOS black screen crashes linked to a deadlock in the Apple enterprise security framework and has been correcting several anti-spam and machine-learning false positives impacting Teams and Exchange Online.

Microsoft anti-spam bug blocks URLs in Exchange, Teams

🔒 Microsoft is addressing a known anti-spam issue that has caused its service to incorrectly block URLs in Exchange Online and Microsoft Teams, and to quarantine some messages. The engine erroneously flags URLs embedded inside other URLs as malicious, creating alerts and preventing users from opening links that were already confirmed safe. Engineers deployed a fix to stop further quarantines and are unblocking over 6,000 affected URLs, but additional impacted links and residual message recovery remain under active remediation while a root cause analysis continues.