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Phishing Campaign Bypasses Multi-Factor Authentication From Microsoft 365

KnowBe4 Threat Labs has discovered a complex phishing campaign targeting US companies and professionals. The attacks compromise Microsoft-365 accounts (Outlook, Teams, Onedrive) by abusing the OAuth 2.0 device authorization flow, thereby outsmarting even strong passwords and multi-factor authentication (MFA). The victim is redirected to the legitimate Microsoft portal "https://microsoft.com/devicelogin" to enter a device code provided by the att…
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KnowBe4 Threat Labs has discovered a complex phishing campaign targeting US companies and professionals. The attacks compromise Microsoft-365 accounts (Outlook, Teams, Onedrive) by abusing the OAuth 2.0 device authorization flow, thereby outsmarting even strong passwords and multi-factor authentication (MFA). The victim is redirected to the legitimate Microsoft portal "https://microsoft.com/devicelogin" to enter a device code provided by the att…

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Netzpalaver | #CloudComputing #Datacenter #Cybercrime #Telekommunkation #Infrastruktur broke the news in on Monday, February 23, 2026.
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