The Basic Input/Output System (BIOS) and its modern successor, the Unified Extensible Firmware Interface (UEFI), represent the most foundational software layer of a computer. Securing it is paramount because code executing at this level operates with the highest possible privileges, often invisible to the operating system and standard security software. 🛡️ The Foundation: Understanding BIOS/UEFI
Traditional antivirus software running in the OS cannot scan this low-level firmware. 🔓 The Attack Surface: How BIOS is Compromised Attackers use several vectors to breach the firmware layer. 1. Physical Access and Hardware Attacks Attacking and Defending BIOS
Treat motherboard firmware updates with the same urgency as OS security patches. The Basic Input/Output System (BIOS) and its modern
Hardware-forced verification of the initial BIOS code before the CPU executes it. 🔓 The Attack Surface: How BIOS is Compromised
Guidelines requiring systems to detect unauthorized changes and automatically recover to a known good state using a protected backup copy.
Set strong administrative passwords for BIOS/UEFI menus to prevent unauthorized local configuration changes.