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Forgotten Bootloaders Expose Secure Boot Blind Spot

Dark Reading·July 15, 2026·1 min read
Forgotten Bootloaders Expose Secure Boot Blind Spot

Nearly a dozen vulnerable and now revoked UEFI shim bootloaders remained trusted for years, giving attackers a path to bypass Secure Boot. The forgotten bootloaders expose a blind spot in the security mechanism designed to prevent unauthorized code from running during system startup.

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