Microsoft is developing a new Teams security feature designed to analyze suspicious traffic involving external domains. This aims to help IT administrators manage potential security threats.
A Microsoft 365 roadmap update explains that the "External Domains Anomalies Report" will help admins protect their organizations without disrupting legitimate business communications. The new tool will analyze messaging trends to identify sharp spikes in activity, communications with new domains, or abnormal engagement patterns with external
entities. It will provide admins with insights from monitoring communication patterns and flagging unusual interactions that could indicate data sharing or security threats.
Microsoft stated that this new report helps admins proactively spot unusual or risky interactions with external organizations. By analyzing communication trends and detecting sudden spikes, new domains, or abnormal engagement patterns, it provides early visibility into potential data-sharing or security risks. As external collaboration grows, the report delivers actionable insights to safeguard the tenant while supporting productive cross-organization work.
The feature will begin rolling out worldwide in February 2026 to standard multi-tenant environments on the web platform. Microsoft has not yet confirmed whether this new feature will require additional licensing or be included with existing Teams subscriptions.
Since the beginning of the year, Microsoft has announced that Teams will warn users when they send or receive private messages containing links flagged as malicious. The company has also been working to enhance Teams' protection against malicious URLs and file types. Furthermore, Microsoft is rolling out new Teams features that will let users report messages mistakenly flagged as security threats and automatically block screen-capture attempts during meetings. Microsoft will also add a new call handler to speed up the Teams desktop client, improving launch times and performance on Windows 11 systems.
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