unboundcompute/security-agent-skills · skills/auditing-secure-boot-and-firmware-signing/SKILL.md

auditing-secure-boot-and-firmware-signing skillA

auditing-secure-boot-and-firmware-signing is agent-read markdown (skill) from unboundcompute/security-agent-skills: Audit updater and bootloader code for a firmware trust boundary that lets an unsigned or downgraded image be flashed or booted. Covers an update image that reaches a flash write or a boot jump with no signature check between receipt and commit, a verification result that is ignored or inverted, an integrity hash mistaken for an authenticity signature, a signature checked over the wrong or partial bytes or over a different buffer than the one committed, a verification key kept in writable storage.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add unboundcompute/security-agent-skills/auditing-secure-boot-and-firmware-signing@git:20260821.57dfaf1
Exact content
mdr add unboundcompute/security-agent-skills/auditing-secure-boot-and-firmware-signing@sha256:2e9b903a13c3c595

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_pqhmyeh65f7eqko5.svg)](https://markdownregistry.com/a/art_pqhmyeh65f7eqko5)

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Versions

versioncommittedcommitsizeaudit
git:20260821.57dfaf1 latest2026-08-21 57dfaf1 9,869 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9869 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

unboundcompute/security-agent-skills · 5 stars · license MIT · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_pqhmyeh65f7eqko5
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/auditing-secure-boot-and-firmware-signing
GET https://markdownregistry.com/api/v1/blob/2e9b903a13c3c595e0e03bd9dec358b7f5db9f56048aea6cbd3be79b46a7b757

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.