An impersonation warning is an alert that a caller, meeting participant, or message sender may not be who they appear to be. The platform raises the warning when signals such as account identity, display name, voice, face, device, or meeting context do not match expected behavior. In collaboration tools, this helps users notice possible identity mismatches before they share money, credentials, files, or approvals.
These warnings matter because attackers increasingly use social engineering, stolen accounts, and synthetic media to look and sound legitimate in real time. A warning can interrupt a rushed decision, prompt extra verification, and reduce trust in a suspicious request. Defenders use them as a low-friction control: they do not prove fraud, but they create a checkpoint that encourages users to confirm identity through a separate channel before acting.