This repository provides content for aiding DoD administrators in verifying systems have applied and enabled mitigations for Spectre and Meltdown. The repository is a companion to a forthcoming Information Assurance Advisory Updated Guidance for Spectre and Meltdown Vulnerabilities Affecting Modern Processors. This advisory will be an update to the previously issued advisory Vulnerabilties Affecting Modern Processors.
https://github.com/nsacyber/Hardware-and-Firmware-Security-Guidance
[Last updated in the Summer. I am pretty sure I included a link to this during the early Spectre/Meltdown posts, but can’t find it, and it is a bit more useful beyond Spectre/Meltdown.]
Firmware Security 
One thought on “NSA Cybersecurity: Hardware and Firmware Security Guidance”