Imported from skill-one/skills-sh-mirror (skills/wshobson/agents/security-requirement-extraction/SKILL.md). Install upstream with npx skills add skill-one/skills-sh-mirror --skill security-requirement-extraction. Copyright stays with the author.

Security Requirement Extraction

Name: security-requirement-extraction
Author: skill-one

Transform threat analysis into actionable security requirements.

When to Use This Skill

Converting threat models to requirements
Writing security user stories
Creating security test cases
Building security acceptance criteria
Compliance requirement mapping
Security architecture documentation

Core Concepts

1. Requirement Categories

Business Requirements → Security Requirements → Technical Controls
         ↓                       ↓                      ↓
  "Protect customer    "Encrypt PII at rest"   "AES-256 encryption
   data"                                        with KMS key rotation"

2. Security Requirement Types

Type	Focus	Example
Functional	What system must do	"System must authenticate users"
Non-functional	How system must perform	"Authentication must complete in <2s"
Constraint	Limitations imposed	"Must use approved crypto libraries"

3. Requirement Attributes

Attribute	Description
Traceability	Links to threats/compliance
Testability	Can be verified
Priority	Business importance
Risk Level	Impact if not met

Templates and detailed worked examples

Full template library lives in references/details.md. Read that file when you need concrete templates for this skill.

Best Practices

Do's

Trace to threats - Every requirement should map to threats
Be specific - Vague requirements can't be tested
Include acceptance criteria - Define "done"
Consider compliance - Map to frameworks early
Review regularly - Requirements evolve with threats

Don'ts

Don't be generic - "Be secure" is not a requirement
Don't skip rationale - Explain why it matters
Don't ignore priorities - Not all requirements are equal
Don't forget testability - If you can't test it, you can't verify it
Don't work in isolation - Involve stakeholders

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