Microsoft Warns of Helpdesk Impersonation Attacks via Teams

Microsoft has reported that threat actors are increasingly abusing external Microsoft Teams channels to conduct helpdesk impersonation attacks targeting enterprise networks. These attackers exploit legitimate tools for initial access and lateral movement within compromised environments. The campaign leverages Teams messages to deceive employees into disclosing credentials or executing malicious payloads. No specific CVEs, dates, or numerical impact metrics were disclosed in the notice. The attacks focus on impersonating IT support personnel to gain unauthorized access. The advisory highlights the growing trend of social engineering via collaboration platforms.