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    Malware Can Abuse Windows Hello for Business Keys for Persistent Entra ID Access

    Entra ID researcher Dirk-jan Mollema demonstrated that malware already running in a signed-in Windows session can silently use the victim's Windows Hello for Business key to authenticate to Microsoft Entra ID. The attacker can then establish longer-term cloud access, register a device it controls, obtain a Primary Refresh Token (PRT), and add further authentication methods where tenant policies

    Source: https://thehackernews.com/2026/08/malware-can-abuse-windows-hello-for.html

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