Attackers Exploit Teams External Chat to Breach Organizations in Under 15 Minutes

October 26, 2026 · 3:52 pm 3 sources

Image: Infosecurity Magazine

Coverage

Coverage

• Attackers Exploit Teams External Chat to Breach Organizations in Under 15 Minutes
  Infosecurity Magazine · October 27, 2026 12:30
  Arctic Wolf warned that the function enables highly effective social engineering attacks, which lead to incidents such as ransomware
• Hackers bury inboxes in spam then show up on Microsoft Teams posing as IT support
  Help Net Security · October 27, 2026 14:16
  Threat actors are flooding employees’ inboxes with spam and then contacting them on Microsoft Teams as IT support, offering to fix the problem they created, Arctic Wolf has found. The security company documented more than 400 incidents in which the external chat feature in Teams was abused. In…

More coverage

• Attackers Use Microsoft Teams IT Support Scams to Deploy Malware and Ransomware
  The Hacker News · October 26, 2026 15:52
  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…