NIST Special Publication 800-147, BIOS Protection Guidelines This document provides guidelines for preventing the unauthorized modification of Basic Input/Output System (BIOS) firmware on PC client systems. Unauthorized modification of BIOS firmware by malicious software constitutes a significant threat because of the BIOS’s unique and privileged position within the PC architecture. A malicious BIOS modification could be part of a sophisticated, targeted attack on an organization —either a permanent denial of service (if the BIOS is corrupted) or a persistent malware presence (if the BIOS is implanted with malware). This guide provides platform vendors with recommendations and guidelines for a secure BIOS update process. Additionally, it provides recommended best practices that are tightly coupled with the security guidelines for platform vendors. These practices can help computer administrators take advantage of the BIOS protection features as they become available.
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