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Context: Windows Update bricking stuff
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this post was submitted on 07 Jul 2025
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Does "Secure Boot" actually benefit the end user in any way what so ever? Genuine question
For you? No. For most people? Nope, not even close.
However, it mitigates certain threat vectors both on Windows and Linux, especially when paired with a TPM and disk encryption. Basically, you can no longer (terms and conditions apply) physically unscrew the storage and inject malware and then pop it back in. Nor can you just read data off the drive.
The threat vector is basically ”our employees keep leaving their laptops unattended in public”.
(Does LUKS with a password mitigate most of this? Yes. But normal people can’t be trusted with passwords and need the TPM to do it for them. And that basically requires SecureBoot to do properly.)
With LUKS, your boot/efi partition is still unencrypted. So someone could install a malicious bootloader, and you probably wouldn't know and would enter your password. With secure boot, the malicious bootloader won't boot because it has no valid signature.
Exactly. The malware can do whatever, but as long as the TPM measurements don’t add up the drive will remain encrypted. Given stringent enough TPM measurements and config you can probably boot signed malware without yielding access to the encrypted data.
In my view, SecureBoot is just icing on the cake that is measured boot via TPM. Nice icing though.