What problem does it solve? This Skill addresses the need to systematically identify, analyze, and document security threats before development begins, producing a structured threat model with risk ratings and mitigations. Note: this Skill is deprecated and its content is now consolidated into Section 9 (Security Architecture) of the Software Architecture Document skill. ## Core Features & Use Cases - STRIDE Threat Analysis: Catalogs threats across Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, and Elevation of Privilege categories. - Risk Assessment: Scores threats using likelihood and impact matrices, producing a prioritized threat list and heat map. - Mitigation & Compliance Mapping: Defines mitigation strategies, security controls, and compliance mappings (GDPR, PCI-DSS, SOC 2) with sign-off workflows. - Use Case: A security architect documenting threats for a new web application would normally use this to produce a threat model and threat register, but should now use the Software Architecture Document skill instead. ## Quick Start Ask the agent to generate the Software Architecture Document for your system, since threat model content now lives in Section 9 of that document.