Microsoft Teams Adds 'Report a Call' to Flag Suspicious One-to-One Calls

Microsoft is rolling out a new Teams security capability that lets end users report suspicious or unwanted one-to-one voice calls as potential scams or phishing attempts. The feature adds a “Report a Call” option in call history (via the More options menu) on Windows, macOS, and web, addressing a visibility gap where organizations previously had limited user-driven reporting for voice-based social engineering attempts.

When a call is reported, Microsoft says only limited call metadata is shared with the organization and Microsoft—such as timestamps, call duration, caller ID (if available), and participant Teams IDs—without indicating that call audio is collected. Reports can be reviewed in the Teams Admin Center and, for organizations with Defender for Office 365 (Plan 1/Plan 2) or Microsoft Defender XDR, in the Microsoft Defender portal; the feature is enabled by default but can be disabled by admins in Teams calling settings. Microsoft indicated a phased rollout beginning with targeted release in mid-March and broader availability thereafter.