Teams adds brand-impersonation warnings for external calls
Microsoft will roll out Brand Impersonation Protection for Teams Calling, automatically warning users on first-time external calls that try to impersonate trusted brands. Enabled by default in the targeted release mid-February, the feature lets users accept, block, or end flagged calls, with alerts possibly persisting during a conversation. It aims to curb social-engineering attacks and complements other security updates; no admin action is required for activation, though IT should update training materials.