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security-review

OWASP secure design review for code and architecture. Checks input validation, authentication, authorization, data protection.

plugins/mycelium/skills/security-review/SKILL.md

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# Security Review

Language-agnostic security review based on OWASP Secure by Design.

## Step 0: Scope the review to what the product holds and does (v0.271.0)

**Record the scope first, then apply only the sections it calls for.** Every product has threats,
but not every product has a login, code, or personal data. Founder, 2026-09-26: "2fa and so on
might not be applicable for all products." A bookkeeping service delivered by hand was reviewed
against this web checklist (CORS, SQL parameters, security headers, multi-factor login), most of
which has nothing to act on there. Write in `.claude/canvas/threat-model.yml`, under its own key
(`scope` stays the threat model's own sentence on what is being modelled; 0.271.0 reused that name and
broke every threat model that had one):
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