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by stable-point 3599 days ago
> if someone has those rights, you're already screwed.

I think that this was once true, but Secure Boot was an attempt to improve the situation. My understanding is that Microsoft's Virtualization Based Security (which Device Guard/Credential Guard are built upon) rely on the assumption that the boot process is secure. If an attacker could have their root kit load before the OS/Hyper-V, then they render those mitigations useless.