Adversaries may overwrite or corrupt the flash memory contents of system BIOS or other firmware in devices attached to a system in order to render them inoperable or unable to boot. Firmware is software that is loaded and executed from non-volatile memory on hardware devices in order to initialize and manage device functionality. These devices could include the motherboard, hard drive, or video cards.
Check the integrity of the existing BIOS and device firmware to determine if it is vulnerable to modification.
|Privileged Account Management||
Prevent adversary access to privileged accounts or access necessary to replace system firmware.
Patch the BIOS and other firmware as necessary to prevent successful use of known vulnerabilities.
System firmware manipulation may be detected. Log attempts to read/write to BIOS and compare against known patching behavior.