security-threat-model SKILL.md skillA

security-threat-model from fattain-naime/engineering-docs is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add fattain-naime/engineering-docs/security-threat-model@git:20260717.2f82174

Pins git:20260717.2f82174 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
fattain-naime/engineering-docs
Path
skills/security-threat-model/SKILL.md
Versions recorded
5
Latest version
git:20260717.2f82174, committed Jul 17, 2026
First version recorded
Jul 8, 2026
Size
15,735 bytes
Repository stars
6
License
MIT

Produce a structured security threat model using the STRIDE framework, identify trust boundaries, enumerate attack vectors, assess risk, and define concrete mitigations. Use when reviewing security of a new feature, system, or integration.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

## Purpose

Produce a structured threat model that systematically identifies what can go wrong in a system from a security perspective, who would attack it, how they would do it, and what concrete controls prevent or mitigate each attack.

**Security is not a feature to add at the end.** A threat model performed before implementation costs hours. A security breach found after launch costs millions and destroys trust that took years to build.

## Input

**Works best with:** The name of the system, feature, or integration being threat-modeled.
**Also valuable:** An existing architecture document, data flow diagram, API design, or description of how data moves through the system.

**Example invocation:** `Threat model our new webhook delivery system. Merchants register endpoint URLs. Our system sends signed HTTP POST requests with event payloads. Merchants verify signatures using a per-merchant secret. The system retries failed deliveries up to 3 times with exponential backoff.`

## Key Concepts

### STRIDE Framework (Microsoft SDL)
The six threat categories that cover all known attack classes:

| Letter | Threat | Violates | Example |
| :--- | :--- | :--- | :--- |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add fattain-naime/engineering-docs/security-threat-model@sha256:0682bfc1399930f7

The line at the top of this page pins the label git:20260717.2f82174, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_mhsv72fywfugq3y4.svg)](https://markdownregistry.com/a/art_mhsv72fywfugq3y4)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Jul 8, 2026 and Jul 17, 2026, about one every 2 days.

versioncommittedcommitsizeaudit
git:20260717.2f82174 latest2026-07-17 2f82174 15,735 BA view · diff
git:20260712.59c58522026-07-12 59c5852 5,932 BA view · diff
git:20260712.7e3d1bb2026-07-12 7e3d1bb 6,025 BA view · diff
git:20260709.03fe43c2026-07-09 03fe43c 5,816 BA view · diff
git:20260708.a309efd2026-07-08 a309efd 4,923 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (15735 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

fattain-naime/engineering-docs · 6 stars · license MIT · pushed 2026-10-21 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_mhsv72fywfugq3y4
GET https://markdownregistry.com/api/v1/resolve?ref=fattain-naime/engineering-docs/security-threat-model
GET https://markdownregistry.com/api/v1/blob/0682bfc1399930f748a9044d3a37bd9879114ce29d9242305201796732c2481b

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in fattain-naime/engineering-docs

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