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BIOS and UEFI are both different system firmware solutions. BIOS was designed back when MS-DOS was main OS, so there was no concept of security built-in. EFI 1.x also basically had no security. UEFI 2.x had Secure Boot, signed code, uses TPM or TrustZone, and has other security features. But, both solutions can have vulnerabilities. UEFI is more complex than ...

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