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Cake day: June 12th, 2023

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  • This is partly Microsoft’s fault, for sure, but it’s also more of a function of how secureboot works. A Linux system using TPM backed FDE with secureboot enabled would have the same problem going the other way.

    Secureboot prevents a lot of ways the TPM could be compromised, so as part of “securely” turning it off, it wipes the keys (otherwise those protections would be pointless, the first thing an attacker would do would be to turn off secureboot).