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Minimalist vector art of a Microsoft Teams chat bubble with a fake helpdesk badge on a blue background.

Microsoft Ecosystem

Microsoft Warns of Sharp Rise in Teams-Based Helpdesk Impersonation Campaigns

A new human-operated intrusion playbook leverages cross-tenant communication to bypass traditional email security, targeting high-privilege credentials through "Helpdesk" deception. REDMOND, WA — Microsoft Threat Intelligence has issued a critical warning regarding a sophisticated surge in "Helpdesk Impersonation" attacks conducted via Microsoft Teams. The campaign, which targets enterprise