Attackers Use Microsoft Teams IT Support Scams to Deploy Malware and Ransomware
Researchers flag a recurring pattern of ransomware delivery through Microsoft Teams external-chat impersonation of IT support — a social-engineering vector that most email-centric defences miss entirely.
Summary written by editorial AI · Source link below
Cybersecurity researchers are calling attention to what they say is a "recurring social engineering pattern" across hundreds of cases in which threat actors use Microsoft Teams' external chat creation feature to conduct impersonation scams or to deliver malware.
"A consistent pattern of attacker behavior has emerged across these incidents: the use of the same throwaway tenants, the same 'IT
Editorial Analysis
As collaboration platforms replace email for internal communication, attackers follow; Teams-based social engineering bypasses traditional secure-email gateways and user training focused on phishing emails.
Disable or restrict Teams external chat federation, and update security-awareness training to cover collaboration-platform impersonation scenarios.
Ransomware operators are using Microsoft Teams impersonation at scale — restricting external chat access is a low-cost, high-impact control.
Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.
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