Sophos researchers have uncovered a Microsoft Teams voice phishing campaign that used fake IT support calls to gain remote access to corporate systems and deploy Chaos ransomware. Tracked as STAC4749, the campaign targeted dozens of North American organizations between February and June 202620262026. The attackers impersonated helpdesk staff through Microsoft Teams chats and voice calls, […]
The post Microsoft Teams Vishing Campaign Deploys Chaos Ransomware Through Fake IT Support Calls appeared first on Cyber Security News.