Security Documentation Standards

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:

# 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:

# 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