Teams meetings will take deepfake signals from certified outside detectors in November

Microsoft is splitting the job in two. For the media, "Organizations can enhance meeting security with synthetic audio and video detection solutions provided by certified third-party providers," Microsoft said ^[3]. Those vendor tools "analyze meeting media for signs of synthetic or manipulated audio and video and send detection signals to Teams, enabling integrated in-meeting experiences and controls," the company said ^[4]. Teams supplies the integration that surfaces the signals and lets users act on them ^[2]. Detection itself stays with the vendor ^[4].

Identity checks run inside Teams. "When Teams detects a potential impersonation attempt, it surfaces warnings and risk indicators to help users recognize suspicious identities and make more informed decisions when joining or participating in a meeting," Microsoft said ^[7]. Users get a warning and a risk indicator. Whether to join or stay is still the employee's call ^[7].

In an executive-impersonation call, the two layers act at different points. An identity warning can appear as the target joins or during the meeting ^[7]. A synthetic voice or face is checked only once it is in the meeting media, and only where the organization has deployed a certified detector ^[3][4]. Without that purchase, Teams offers the identity check alone ^[2][6].

November gives security teams a date to plan meeting controls around, according to the Microsoft 365 Roadmap entries ^[5]. Picking a detector before then is harder. The roadmap entries, as BleepingComputer reported them, do not name the certified providers or describe the in-meeting controls. Vendor evaluation can start against Microsoft's description of what the tools must do, but the final choice depends on whom Microsoft certifies ^[3][4].

Each earlier Teams control in the reporting screens something arriving from outside: external accounts, bots, QR codes, guest invitations ^[13]. The deepfake integration is the first in that series to inspect a meeting's audio and video ^[13]. Guest-invitation reporting, announced in September, also starts in November ^[11]. That puts three Teams changes in the same month ^[12].