# Security Documentation

> ISMS security documentation standards for Hack23 projects

- Skill: `hack23/security-documentation` (Agent Skill)
- Install (CLI): `npx skillmds@latest add hack23/security-documentation`
- Raw SKILL.md: https://api.skillmd.com/api/skills/hack23/security-documentation/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Security
- License: Apache-2.0
- Author: Hack23 (https://skillmd.com/u/hack23)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/hack23/security-documentation

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# Security Documentation Standards


## 🔴 AI FIRST Quality Principle

> **Apply the AI FIRST principle: never accept first-pass quality. Minimum 2 iterations. Read all output, improve every section. No shortcuts.**

## Purpose

Maintain comprehensive security documentation per Hack23 ISMS requirements.

## Required Documents

### Current State
- ✅ **SECURITY_ARCHITECTURE.md** - Implemented security controls
- ✅ **THREAT_MODEL.md** - STRIDE threat analysis
- ✅ **ARCHITECTURE.md** - System design with C4 models
- ✅ **SECURITY.md** - Security policy and vulnerability reporting

### Future State
- ✅ **FUTURE_SECURITY_ARCHITECTURE.md** - Planned security improvements

## Document Structure

**SECURITY_ARCHITECTURE.md:**
```markdown
# Security Architecture

## Executive Summary
## Security Controls
### Network Security
### Application Security
### Access Control
### Data Protection
### Monitoring & Detection
## Compliance Mapping
### ISO 27001:2022
### NIST CSF 2.0
### CIS Controls v8.1
## References
```

**THREAT_MODEL.md:**
```markdown
# Threat Model

## Asset Inventory
## STRIDE Analysis
### Spoofing Threats
### Tampering Threats
### Repudiation Threats
### Information Disclosure Threats
### Denial of Service Threats
### Elevation of Privilege Threats
## Risk Assessment
## Mitigation Controls
## Residual Risks
```

## Quality Standards

- Use C4 diagrams (Context, Container, Component)
- Include Mermaid diagrams for complex workflows
- Map to ISO 27001/NIST CSF/CIS Controls
- Version control metadata (version, date, owner)
- Classification marking (Public, Internal, Confidential)

## References

- **ISMS-PUBLIC**: https://github.com/Hack23/ISMS-PUBLIC
- **Secure Development Policy**: https://github.com/Hack23/ISMS-PUBLIC/blob/main/Secure_Development_Policy.md