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Windows 11 BitLocker Bypassed to Extract Encryption Keys
(gbhackers.com)
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this post was submitted on 06 Jan 2025
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This is not true.
You would additionally need to bypass Secure Boot with a separate exploit such as the one in this article (which is mitigated by disabling USB boot) or LogoFAIL to put the TPM PCRs in a state where the keys can be released.
LUKS2 is no different here as either can be TPM-only or require a separate PIN.
Yes, assuming it's durably sealed and tamper-proof. If you have enough physical access, though, you can remove the DRAM and put it in another machine to scrape it. This adds time, but it has been done before. One experiment dipped the DRAM in liquid nitrogen for an hour, and found 0.13% decay.
Yeah you really need a password or TPM PIN protector to protect from cold boot attacks if that is in your threat model.