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Perform STRIDE threat modeling for new features, APIs, and architecture changes
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
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Perform STRIDE threat modeling during Sprint Planning for new features and APIs
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| name | threat-modeling |
| description | Perform STRIDE threat modeling for new features, APIs, and architecture changes |
Invoke when designing new features, APIs, or reviewing architecture changes that affect the threat surface.
# Threat Model: [Feature Name]
**Date:** [YYYY-MM-DD]
**Author:** [Security Champion / Team]
**Phase:** [Requirements / Design / Implementation]
## Feature Description
[Brief description of the feature being threat-modeled]
## Data Flow Diagram
[Describe: User → Frontend → API Gateway → Service → Database]
## STRIDE Analysis
| # | Threat | Category | Component | Likelihood | Impact | Risk | Mitigation |
|---|--------|----------|-----------|-----------|--------|------|------------|
| 1 | [desc] | Spoofing | [Component] | H/M/L | H/M/L | H/M/L | [control] |
| 2 | [desc] | Tampering | [Component] | H/M/L | H/M/L | H/M/L | [control] |
| 3 | [desc] | Repudiation | [Component] | H/M/L | H/M/L | H/M/L | [control] |
| 4 | [desc] | Info Disclosure | [Component] | H/M/L | H/M/L | H/M/L | [control] |
| 5 | [desc] | Denial of Service | [Component] | H/M/L | H/M/L | H/M/L | [control] |
| 6 | [desc] | Elevation of Privilege | [Component] | H/M/L | H/M/L | H/M/L | [control] |
## Trust Boundaries
- External → API Gateway (TLS termination, JWT validation)
- API Gateway → Internal Services (service mesh)
- Service → Database (encrypted connection, read-only app accounts)
## Residual Risks
| Risk | Justification for Acceptance | Review Date |
|------|------------------------------|-------------|
| [Risk] | [Why accepted] | [YYYY-MM-DD] |
## Action Items
| # | Action | Owner | Due | Status |
|---|--------|-------|-----|--------|
| 1 | [Action] | [Name] | [Date] | Open |
#[[file:docs/threat-models/threat-model-template.md]]