Attackers Use Microsoft Teams IT Support Scams to Deploy Malware and Ransomware

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