Microsoft’s Secure Boot has been broken for a decade and no one noticed until now
Summary
Microsoft's Secure Boot feature, intended to prevent malware from loading during system startup, has been bypassable for approximately a decade due to unrevoked bootloaders, referred to as 'shims.' Researchers discovered these vulnerabilities, which could allow attackers to load untrusted code early in the boot process.
IFF Assessment
The existence of long-standing, unpatched vulnerabilities in a core security feature like Secure Boot allows attackers to bypass foundational security controls, posing a significant risk to system integrity.
Defender Context
Defenders should be aware that the integrity of the boot process may be compromised on systems relying on Microsoft's Secure Boot, especially if patches have not been applied or if older systems are in use. This highlights the importance of robust endpoint security and vigilance against boot-level malware.