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**Table of Contents**

- [Security Documentation Index (v26.5.19)](#security-documentation-index-v26519)
  - [Overview](#overview)
  - [Quick Links](#quick-links)
  - [Documentation Structure](#documentation-structure)
  - [For New Developers](#for-new-developers)
  - [For Experienced Developers](#for-experienced-developers)
    - [SafePath Usage](#safepath-usage)
    - [QueryBuilder Usage](#querybuilder-usage)
    - [ErrorSanitizer Usage](#errorsanitizer-usage)
  - [For Security Researchers](#for-security-researchers)
  - [For Security Team](#for-security-team)
  - [Documentation by Topic](#documentation-by-topic)
    - [Path Security](#path-security)
    - [Query Security](#query-security)
    - [Template Security](#template-security)
    - [Error Handling](#error-handling)
    - [Rate Limiting](#rate-limiting)
    - [Testing](#testing)
    - [Incident Response](#incident-response)
  - [Security Training](#security-training)
    - [Required Training](#required-training)
    - [Training Materials](#training-materials)
  - [Security Metrics](#security-metrics)
    - [Current Status (v26.5.19)](#current-status-v26519)
    - [Historical Improvements](#historical-improvements)
  - [Roadmap](#roadmap)
    - [v26.5.19 (Q1 2026)](#v26519-q1-2026)
    - [v26.5.19.2.0 (Q2 2026)](#v2651920-q2-2026)
    - [v7.0.0 (Q3 2026)](#v700-q3-2026)
  - [External Resources](#external-resources)
    - [Standards](#standards)
    - [Rust Security](#rust-security)
    - [Tools](#tools)
  - [Contributing](#contributing)
  - [Contact](#contact)

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# Security Documentation Index (v26.5.19)

## Overview

This directory contains comprehensive security documentation for ggen v26.5.19, including architecture, safe coding guidelines, testing procedures, incident response plans, and migration guides.

**Last Updated**: 2026-01-24
**Version**: 26.5.4
**Status**: Production-Ready

---

## Quick Links

- **📋 [Developer Security Checklist](CHECKLIST.md)** - Use this before every commit
- **🔐 [Safe Coding Guidelines](SAFE_CODING.md)** - Required reading for all developers
- **🏗️ [Security Architecture](ARCHITECTURE.md)** - Defense-in-depth design
- **🧪 [Security Testing](TESTING.md)** - Fuzzing, penetration testing, scanning
- **🚨 [Incident Response Plan](INCIDENT_RESPONSE.md)** - What to do when incidents occur
- **🔄 [v26.5.19 Migration Guide](V6_MIGRATION.md)** - Migrating from v26.5.19.x to v26.5.19

---

## Documentation Structure

```
docs/security/
├── README.md                  # This file - Security documentation index
├── CHECKLIST.md               # Developer security checklist (use before commits)
├── SAFE_CODING.md             # Safe coding guidelines (SafePath, QueryBuilder, etc.)
├── ARCHITECTURE.md            # Security architecture (defense-in-depth)
├── TESTING.md                 # Security testing (fuzzing, pen testing, scanning)
├── INCIDENT_RESPONSE.md       # Incident response procedures
├── V6_MIGRATION.md            # Migration guide from v26.5.19.x to v26.5.19
├── WEEK_4_SECURITY_HARDENING_REPORT.md  # Historical: Week 4 security improvements
├── WEEK_4_QUICK_REFERENCE.md           # Historical: Quick reference for v26.5.19.x security
└── WEEK_4_IMPLEMENTATION_SUMMARY.md    # Historical: Implementation details
```

---

## For New Developers

**Start Here**:

1. **Read** [SECURITY.md](../../SECURITY.md) (root) - Security policy and vulnerability reporting
2. **Read** [SAFE_CODING.md](SAFE_CODING.md) - Safe coding patterns (1 hour)
3. **Review** [CHECKLIST.md](CHECKLIST.md) - Pre-commit checklist
4. **Browse** [ARCHITECTURE.md](ARCHITECTURE.md) - Understand defense-in-depth
5. **Try** Write a simple feature with SafePath and QueryBuilder

**Key Concepts to Learn**:
- SafePath (prevents path traversal)
- QueryBuilder (prevents SPARQL injection)
- ErrorSanitizer (prevents information disclosure)
- Rate limiting (prevents DoS)
- Chicago TDD (state-based testing)

---

## For Experienced Developers

**Quick Reference**:

### SafePath Usage
```rust
use ggen_core::security::SafePath;
let path = SafePath::new(user_input)?
    .within_directory(Path::new("templates"))?;
let content = fs::read_to_string(path.as_path())?;
```

### QueryBuilder Usage
```rust
use ggen_core::sparql::QueryBuilder;
let query = QueryBuilder::new()
    .select(&["s", "?p", "?o"])
    .where_clause("?s ?p ?o")
    .filter(&format!("?s = {}", QueryBuilder::escape_literal(user_input)))
    .build()?;
```

### ErrorSanitizer Usage
```rust
use ggen_core::security::ErrorSanitizer;
let sanitized = ErrorSanitizer::file_error("read", path, &err);
log::error!("{}", sanitized.internal_message());
return Err(sanitized.user_message());
```

---

## For Security Researchers

**Reporting Vulnerabilities**:
- Email: `sean@chatmangpt.com`
- Subject: `[SECURITY] ggen v26.5.19 vulnerability - [brief description]`
- Include: Steps to reproduce, affected versions, impact assessment

**Responsible Disclosure**:
- We acknowledge reports within 48 hours
- We fix critical issues within 72 hours
- We credit researchers in release notes (with permission)
- We follow coordinated disclosure timeline

**See**: [SECURITY.md](../../SECURITY.md#reporting-security-vulnerabilities)

---

## For Security Team

**Documentation**:
- [ARCHITECTURE.md](ARCHITECTURE.md) - Security architecture and trust boundaries
- [TESTING.md](TESTING.md) - Security testing strategy (fuzzing, pen testing)
- [INCIDENT_RESPONSE.md](INCIDENT_RESPONSE.md) - Incident response procedures

**Processes**:
- Security review required for all PRs touching security-critical code
- Quarterly security audits
- Weekly penetration testing
- Nightly dependency scanning (`cargo audit`)

**Metrics**:
- Vulnerability count (track over time)
- Time to fix vulnerabilities (P0: 24h, P1: 1 week, P2: 2 weeks)
- Test coverage for security-critical code (>80%)
- Rate limit violations in production

---

## Documentation by Topic

### Path Security

**Files**:
- [SAFE_CODING.md - SafePath Usage Patterns](SAFE_CODING.md#safepath-usage-patterns)
- [V6_MIGRATION.md - SafePath Migration](V6_MIGRATION.md#safepath-migration)

**Key Concepts**:
- Path traversal prevention (`..` detection)
- Symbolic link resolution
- Directory boundary enforcement
- Canonical path resolution

### Query Security

**Files**:
- [SAFE_CODING.md - SPARQL Query Construction](SAFE_CODING.md#sparql-query-construction)
- [V6_MIGRATION.md - SPARQL Builder Migration](V6_MIGRATION.md#sparql-builder-migration)

**Key Concepts**:
- SPARQL injection prevention
- Parameterized queries (future)
- Input escaping (literals, URIs)
- Query complexity limits

### Template Security

**Files**:
- [SAFE_CODING.md - Template Security](SAFE_CODING.md#template-security)
- [ARCHITECTURE.md - Layer 4: Business Logic](ARCHITECTURE.md#layer-4-business-logic)

**Key Concepts**:
- Template sandboxing
- No filesystem access
- No command execution
- Context validation

### Error Handling

**Files**:
- [SAFE_CODING.md - Error Handling](SAFE_CODING.md#error-handling-without-information-leakage)
- [V6_MIGRATION.md - Error Handling Changes](V6_MIGRATION.md#error-handling-changes)

**Key Concepts**:
- Information disclosure prevention
- Path sanitization
- Credential removal
- Dual messaging (user vs. internal)

### Rate Limiting

**Files**:
- [ARCHITECTURE.md - Layer 3: Rate Limiting](ARCHITECTURE.md#layer-3-rate-limiting)
- [V6_MIGRATION.md - Rate Limiting Configuration](V6_MIGRATION.md#rate-limiting-configuration)

**Key Concepts**:
- Token bucket algorithm
- Concurrent operation limits
- Resource quotas
- DoS prevention

### Testing

**Files**:
- [TESTING.md](TESTING.md) - Complete security testing guide
- [CHECKLIST.md - Testing Checklist](CHECKLIST.md#testing-checklist)

**Key Concepts**:
- Fuzzing (AFL, LibFuzzer)
- Penetration testing
- Property-based testing
- Security regression tests

### Incident Response

**Files**:
- [INCIDENT_RESPONSE.md](INCIDENT_RESPONSE.md) - Complete incident response plan
- [SECURITY.md](../../SECURITY.md#security-incident-response) - Summary

**Key Concepts**:
- Detection and analysis
- Containment strategy
- Eradication and recovery
- Post-incident review (5 Whys)

---

## Security Training

### Required Training

**All Developers**:
- Read [SAFE_CODING.md](SAFE_CODING.md) (1 hour)
- Review [CHECKLIST.md](CHECKLIST.md) (30 minutes)
- Complete SafePath tutorial (30 minutes)
- Complete QueryBuilder tutorial (30 minutes)

**Security Team**:
- All developer training (above)
- Read [ARCHITECTURE.md](ARCHITECTURE.md) (1 hour)
- Read [TESTING.md](TESTING.md) (1 hour)
- Read [INCIDENT_RESPONSE.md](INCIDENT_RESPONSE.md) (1 hour)
- Participate in incident response drill (2 hours)

### Training Materials

**Tutorials** (Coming Soon):
- SafePath 101: Preventing Path Traversal
- QueryBuilder 101: Preventing SPARQL Injection
- ErrorSanitizer 101: Preventing Information Disclosure
- Rate Limiting 101: Preventing DoS Attacks

**Videos** (Coming Soon):
- Security Architecture Overview (20 minutes)
- Incident Response Walkthrough (30 minutes)
- Common Security Mistakes (15 minutes)

---

## Security Metrics

### Current Status (v26.5.19)

| Metric | Target | Actual | Status |
|--------|--------|--------|--------|
| Vulnerability Count | 0 | 0 | ✅ |
| Test Coverage (Security) | >80% | 87% | ✅ |
| Time to Fix (P0) | <24h | N/A | ✅ |
| Time to Fix (P1) | <1 week | N/A | ✅ |
| Dependency Audit | 0 issues | 0 issues | ✅ |
| SafePath Coverage | 100% | 100% | ✅ |
| QueryBuilder Coverage | 100% | 100% | ✅ |

### Historical Improvements

**v26.5.19.0 → v26.5.19**:
- Path traversal vulnerabilities: 3 → 0 (100% reduction)
- SPARQL injection risks: 5 → 0 (100% reduction)
- Information disclosure: 7 → 0 (100% reduction)
- Rate limiting: None → Enforced (∞% improvement)
- Test coverage: 64% → 87% (36% improvement)

---

## Roadmap

### v26.5.19 (Q1 2026)
- [ ] API authentication (API keys)
- [ ] Multi-tenant isolation
- [ ] Enhanced audit logging
- [ ] Security dashboard

### v26.5.19.2.0 (Q2 2026)
- [ ] OAuth2 integration
- [ ] Role-based access control (RBAC)
- [ ] Encrypted audit logs
- [ ] Anomaly detection

### v7.0.0 (Q3 2026)
- [ ] End-to-end encryption
- [ ] Hardware security module (HSM) integration
- [ ] Compliance certifications (SOC2, ISO 27001)
- [ ] Bug bounty program

---

## External Resources

### Standards

- [OWASP Top 10 (2021)](https://owasp.org/Top10/)
- [SANS Top 25 (2024)](https://www.sans.org/top25-software-errors/)
- [CWE Top 25](https://cwe.mitre.org/top25/)
- [NIST Cybersecurity Framework](https://www.nist.gov/cyberframework)

### Rust Security

- [Rust Secure Code Guidelines](https://anssi-fr.github.io/rust-guide/)
- [RustSec Advisory Database](https://rustsec.org/)
- [Rust Security Working Group](https://www.rust-lang.org/governance/wgs/wg-security-response)

### Tools

- [cargo-audit](https://github.com/rustsec/rustsec) - Dependency vulnerability scanner
- [cargo-fuzz](https://github.com/rust-fuzz/cargo-fuzz) - Fuzzing tool
- [clippy](https://github.com/rust-lang/rust-clippy) - Linting tool
- [miri](https://github.com/rust-lang/miri) - Undefined behavior detector

---

## Contributing

**Security Documentation PRs Welcome**:
- Fix typos, improve clarity
- Add examples, code snippets
- Update for new vulnerabilities
- Translate to other languages

**Process**:
1. Fork the repository
2. Create a branch (`git checkout -b docs/security-improvements`)
3. Make changes
4. Submit PR with clear description
5. Security team reviews and merges

---

## Contact

**Security Team**:
- Email: `sean@chatmangpt.com`
- GitHub: [@seanchatmangpt](https://github.com/seanchatmangpt)

**Vulnerability Reports**:
- Email: `sean@chatmangpt.com` (Subject: `[SECURITY]`)
- GitHub Security Advisories (private reporting)

**Documentation Feedback**:
- GitHub Issues: [ggen/issues](https://github.com/seanchatmangpt/ggen/issues)
- GitHub Discussions: [ggen/discussions](https://github.com/seanchatmangpt/ggen/discussions)

---

**Last Updated**: 2026-01-24
**Version**: 26.5.4
**License**: MIT
