Threat modeling is structured "what can go wrong?" — applied to this system, not a checklist someone wrote for a different one. Match the depth to the blast radius: a one-field config change gets a quick pass; a new auth flow or a multi-tenant feature gets the full walk.
Threat Model The Change is a community-contributed Claude Code skill in the zero-trust sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/threat-model-the-change/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when reviewing a change, feature, or design for security — walk Shostack's four questions and STRIDE across every trust boundary of THIS stack, not a generic checklist.
The Threat Model The Change Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 174,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/threat-model-the-change curl -L https://claudskills.com/skills/threat-model-the-change/SKILL.md \ -o ~/.claude/skills/threat-model-the-change/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/threat-model-the-change/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/threat-model-the-change/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\threat-model-the-change\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
SKILL.md from the source repository to ~/.claude/skills/threat-model-the-change/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Threat Model The Change is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{threat-model-the-change-2026,
author = {wastedcode},
title = {Threat Model The Change [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/threat-model-the-change/}
}Grade A · scanned 2026-08-02 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.