Secure Boot was adopted to protect against a long-looming security threat of malware infecting the BIOS, granting it stealthy access before the OS and security apps, exemplified by 2011's Mebromi BIOS rootkit discovery.
Secure Boot, using public-key cryptography, aims to prevent unauthorized code loading pre-boot. Despite a 2022 compromise affecting over 200 device models, it's deemed crucial for security in critical environments.
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