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Microsoft Teams vishing attacks lead to Chaos ransomware attacks
July 30, 2026 · BleepingComputer · Severity: CRITICAL
Threat actors are using Microsoft Teams vishing attacks, impersonating IT support to gain remote access and deploy Chaos ransomware. These attacks are targeting North American organizations.
Key Takeaways
- Threat actors impersonate IT support via Microsoft Teams calls.
- Vishing attacks target North American organizations to deploy Chaos ransomware.
- Attackers gain remote access to corporate devices through social engineering.