Individual skill
threat-model
Threat-model a system or feature to find where it could be attacked, before you build it. Use when asked to threat-model, do a security design review, document security risks, identify attack surface, or apply STRIDE to a design. Produces a structured threat model: assets, trust boundaries and data flows, threats enumerated by category (STRIDE), risk scores, prioritized mitigations, and residual-risk sign-off. Defensive security for systems you own or are authorized to assess.
skills/threat-model/SKILL.md
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# Threat Model Skill
Security bugs are cheapest to fix at design time. Threat modeling asks, systematically, "what can go wrong
here?" — before code exists. This skill runs a structured pass: map what you're protecting and the trust
boundaries, enumerate threats with **STRIDE**, and prioritize mitigations by risk. It's for systems you own or
are authorized to assess.
## Required Inputs
Ask for these only if they aren't already provided:
- **The system/feature** — what it does, its components, and how data flows through it.
- **Assets** — what's worth protecting (data, credentials, funds, availability, reputation).
- **Trust boundaries** — where control changes hands (internet↔app, app↔DB, tenant↔tenant, user roles).