Microsoft to Add Brand Impersonation Protection Warning to Teams Calls

Microsoft announced Brand Impersonation Protection for Teams Calling, a proactive capability that analyzes first-contact external VoIP calls for fraud indicators and warns users before and during calls, allowing them to accept, block, or end suspicious calls; it will be enabled by default, begins Targeted Release deployment in mid-February 2026 on desktop and Mac, requires no policy changes, and organizations are advised to brief helpdesk staff and update training materials while awaiting general availability and updated caller ID security documentation.