Hardware-forced verification of the initial BIOS code before the CPU executes it.
Attackers do not always need physical access. They can leverage vulnerabilities from within a compromised operating system.
A dedicated microcontroller that securely stores cryptographic keys and measures the integrity of the boot components (Measured Boot). 2. Firmware Integrity and Recovery Attacking and Defending BIOS
Exploiting update mechanisms that lack cryptographic signature verification to flash modified, malicious BIOS images.
Set strong administrative passwords for BIOS/UEFI menus to prevent unauthorized local configuration changes. Hardware-forced verification of the initial BIOS code before
System Management Mode (SMM) is a highly privileged CPU mode. Vulnerabilities in SMM handlers allow attackers to execute arbitrary code with ring -2 privileges.
Modern systems employ automated defenses to detect and repair firmware corruption. Set strong administrative passwords for BIOS/UEFI menus to
A UEFI feature that ensures only cryptographically signed, trusted bootloaders and drivers can execute during the boot process.