# Security Audit Checklist

**Version:** 1.0.0
**Date:** January 30, 2026
**Audit Period:** Pre-Production Release

## Executive Summary

This document provides a comprehensive security audit checklist for the TraceRTM application based on OWASP Top 10 2023, CWE Top 25, and industry security best practices.

---

## 1. Authentication & Access Control

### 1.1 Authentication Mechanisms
- [ ] Password requirements enforced (min 12 chars, complexity)
- [ ] No session fixation vulnerabilities
- [ ] Session tokens properly invalidated on logout
- [ ] No hardcoded credentials in code
- [ ] API keys properly secured
- [ ] WorkOS AuthKit properly integrated
- [ ] MFA/2FA available (optional)

**Verification Commands:**
```bash
# Check for hardcoded credentials
grep -r "password\|secret\|key\|token" src/ --include="*.ts" --include="*.tsx" | grep -v "node_modules" | grep -v ".env"

# Verify environment variables
cat .env.example

# Check authentication configuration
grep -r "auth" src/server --include="*.ts" | grep -i "config\|setup"
```

**Files to Review:**
- `/src/server/middlewares/auth.ts`
- `/src/server/routers/auth.ts`
- `/.env.example`

### 1.2 Authorization & Access Control
- [ ] RLS policies enabled on all sensitive tables
- [ ] User isolation verified in database queries
- [ ] Role-based access control (RBAC) implemented
- [ ] Permission checks at API layer
- [ ] No privilege escalation vectors
- [ ] Tenant data isolation verified

**Verification SQL:**
```sql
-- Check RLS policies
SELECT * FROM pg_policies;

-- Verify policies use auth.jwt()
SELECT definition FROM pg_policies WHERE definition LIKE '%auth.jwt()%';

-- Check table RLS status
SELECT tablename, row_security_enabled
FROM information_schema.tables t
JOIN pg_tables p ON t.table_name = p.tablename
WHERE table_schema = 'public';
```

**Files to Review:**
- `/supabase/migrations/` (RLS policies)
- `/src/server/middlewares/` (authorization)

### 1.3 Session Management
- [ ] Session tokens have appropriate expiration
- [ ] Session tokens stored securely (HttpOnly flag)
- [ ] CSRF tokens generated and validated
- [ ] Concurrent session limits enforced
- [ ] Session tracking enabled for audit

**Test Cases:**
```typescript
// Test 1: Session expiration
// - Create session
// - Wait for expiration
// - Verify access denied

// Test 2: CSRF protection
// - Attempt state-changing request without CSRF token
// - Verify request rejected

// Test 3: Session invalidation
// - Create session
// - Logout
// - Verify session invalid
```

---

## 2. Data Protection & Encryption

### 2.1 Encryption in Transit
- [ ] HTTPS/TLS 1.3+ enforced
- [ ] HSTS header set (min 1 year)
- [ ] Certificate valid and up-to-date
- [ ] No mixed HTTP/HTTPS content
- [ ] Secure WebSocket (WSS) used

**Verification:**
```bash
# Check SSL/TLS configuration
openssl s_client -connect api.example.com:443 -tls1_3

# Check HSTS header
curl -I https://api.example.com | grep -i hsts

# Verify CSP header
curl -I https://api.example.com | grep -i content-security
```

### 2.2 Encryption at Rest
- [ ] Database encryption enabled
- [ ] Secrets encryption enabled
- [ ] Backup encryption enabled
- [ ] File storage encryption enabled
- [ ] Keys stored securely
- [ ] Key rotation implemented

**Verification:**
```sql
-- Check database encryption
SELECT * FROM pg_stat_database WHERE datname = 'production';

-- Verify encrypted columns
SELECT column_name, data_type
FROM information_schema.columns
WHERE table_name = 'users' AND column_name LIKE '%encrypted%';
```

### 2.3 Sensitive Data Handling
- [ ] PII encrypted in database
- [ ] Passwords hashed with bcrypt/argon2
- [ ] API keys never logged
- [ ] Credit card data not stored (if applicable)
- [ ] Sensitive data masked in logs
- [ ] Data retention policies enforced

**Code Review:**
```bash
# Find password handling
grep -r "password" src/server/routers --include="*.ts" -A 3 -B 3

# Check for PII in logs
grep -r "email\|phone\|ssn" src/server --include="*.ts" | grep -i "log\|console"

# Verify encryption usage
grep -r "encrypt\|hash\|bcrypt" src/server --include="*.ts"
```

---

## 3. Input Validation & Injection Prevention

### 3.1 Input Validation
- [ ] All inputs validated with Zod schemas
- [ ] Input length limits enforced
- [ ] Input type validation enforced
- [ ] Special characters handled properly
- [ ] File uploads validated
- [ ] Rate limiting on inputs

**Verification:**
```bash
# Check Zod schema usage
grep -r "z\." src/server/routers --include="*.ts" | grep -c "input\|z\."

# Find any input without validation
grep -r "req.body\|query\|params" src/ --include="*.ts" | grep -v "z\.\|schema\|validate"
```

**Files to Review:**
```
/src/server/routers/ - All routers should have input validation
```

**Test Cases:**
```typescript
// Test 1: SQL Injection
const maliciousInput = "'; DROP TABLE users; --";
// Expected: Input rejected or safely escaped

// Test 2: XSS Attack
const xssInput = "<script>alert('XSS')</script>";
// Expected: Output escaped or sanitized

// Test 3: Path Traversal
const pathInput = "../../etc/passwd";
// Expected: Path normalized, traversal prevented

// Test 4: Null Byte Injection
const nullInput = "test\x00.txt";
// Expected: Rejected or sanitized
```

### 3.2 SQL Injection Prevention
- [ ] Parameterized queries used exclusively
- [ ] No string concatenation in queries
- [ ] Prepared statements enforced
- [ ] ORM/query builder used properly
- [ ] Database user permissions least privilege

**Verification:**
```bash
# Check for SQL concatenation
grep -r "SELECT\|INSERT\|UPDATE\|DELETE" src/server --include="*.ts" | grep -i "\\+" | grep -i "string\|template"

# Verify parameterized queries
grep -r "query(" src/server/repositories --include="*.ts" | head -20
```

### 3.3 XSS Prevention
- [ ] Output encoding enabled
- [ ] Content Security Policy (CSP) configured
- [ ] No dangerous HTML methods used
- [ ] Sanitization library for user content
- [ ] Template injection prevented

**CSP Header Verification:**
```bash
curl -I https://api.example.com | grep content-security-policy

# Expected: Restrictive CSP policy like:
# default-src 'self'; script-src 'self' 'unsafe-inline'; ...
```

---

## 4. API Security

### 4.1 API Authentication
- [ ] All endpoints require authentication (except public)
- [ ] API keys properly validated
- [ ] JWT tokens properly validated
- [ ] Token expiration enforced
- [ ] Token refresh mechanism secure

**Test:**
```bash
# Attempt unauthenticated request
curl https://api.example.com/api/projects
# Expected: 401 Unauthorized

# Attempt with invalid token
curl -H "Authorization: Bearer invalid_token" https://api.example.com/api/projects
# Expected: 401 Unauthorized

# Attempt with expired token
curl -H "Authorization: Bearer expired_token" https://api.example.com/api/projects
# Expected: 401 Unauthorized
```

### 4.2 Rate Limiting
- [ ] Rate limiting implemented on all endpoints
- [ ] Different limits for authenticated/unauthenticated
- [ ] Rate limit headers returned (X-RateLimit-*)
- [ ] DDoS protection enabled
- [ ] Graceful degradation under load

**Configuration Verification:**
```bash
# Check rate limiting setup
grep -r "rateLimit\|RateLimit" src/server --include="*.ts" -B 2 -A 2

# Test rate limiting
for i in {1..150}; do
  curl -s https://api.example.com/api/health
done
# Expected: 429 Too Many Requests after limit
```

### 4.3 CORS Configuration
- [ ] CORS properly configured
- [ ] Allowed origins restricted
- [ ] Allowed methods limited
- [ ] Sensitive headers protected
- [ ] Credentials handled securely

**Verification:**
```bash
# Check CORS headers
curl -H "Origin: https://attacker.com" \
     -H "Access-Control-Request-Method: GET" \
     -X OPTIONS https://api.example.com
# Expected: Only whitelisted origins allowed

# Verify allowed origins
curl -H "Origin: https://trusted-domain.com" \
     -I https://api.example.com | grep -i access-control
```

---

## 5. Error Handling & Logging

### 5.1 Error Handling
- [ ] Generic error messages to users
- [ ] Detailed errors only in logs
- [ ] No stack traces exposed
- [ ] Error codes not revealing sensitive info
- [ ] Error handling for all code paths

**Verification:**
```bash
# Check error messages
grep -r "throw\|Error" src/server/routers --include="*.ts" | head -20

# Verify generic error responses
grep -r "error" src/server --include="*.ts" | grep -i "message\|response"
```

### 5.2 Security Logging
- [ ] Authentication events logged
- [ ] Authorization failures logged
- [ ] Data access logged
- [ ] Configuration changes logged
- [ ] Error conditions logged
- [ ] Logs retained for audit (min 90 days)
- [ ] Logs not accessible to unauthorized users

**Verification:**
```bash
# Check logging configuration
grep -r "logger\|log(" src/server --include="*.ts" | wc -l

# Verify sensitive data not logged
grep -r "console.log\|logger" src/server --include="*.ts" | grep -i "password\|secret\|token\|key"
# Expected: No results
```

### 5.3 Monitoring & Alerting
- [ ] Security events monitored
- [ ] Anomalies detected
- [ ] Alerts configured
- [ ] Alert response procedures documented
- [ ] Incident response team designated

---

## 6. Infrastructure Security

### 6.1 Server Security
- [ ] OS security updates applied
- [ ] Unnecessary services disabled
- [ ] Firewall configured
- [ ] SSH hardened (key-based auth only)
- [ ] File permissions properly set
- [ ] Selinux/AppArmor enabled

### 6.2 Network Security
- [ ] VPC/network segmentation
- [ ] Private database access
- [ ] VPN for admin access
- [ ] No direct internet exposure for sensitive services
- [ ] DDoS protection enabled
- [ ] WAF configured

### 6.3 Container Security (if applicable)
- [ ] Base images minimal and updated
- [ ] No secrets in Dockerfile
- [ ] Image scanning for vulnerabilities
- [ ] Runtime security policies
- [ ] Resource limits set

---

## 7. Dependency Management

### 7.1 Dependency Audit
```bash
# Run security audit
npm audit
# Expected: Zero high or critical vulnerabilities

# List all dependencies
bun pm ls

# Check for outdated packages
npm outdated

# Verify lock file is committed
git log --oneline -- bun.lock | head -5
```

### 7.2 Vulnerable Package Handling
- [ ] No known vulnerable packages used
- [ ] Patches applied immediately for critical vulnerabilities
- [ ] Deprecated packages removed
- [ ] Dependency updates tested before deployment

**Files to Review:**
- `/bun.lock`
- `package.json`

---

## 8. OWASP Top 10 2023 Coverage

### A01:2023 Broken Access Control
- [ ] RLS policies comprehensive
- [ ] API authorization enforced
- [ ] User isolation verified
- [ ] Status: **PASS/FAIL**

### A02:2023 Cryptographic Failures
- [ ] Encryption in transit enforced
- [ ] Encryption at rest enabled
- [ ] Key management secure
- [ ] Status: **PASS/FAIL**

### A03:2023 Injection
- [ ] SQL injection prevention verified
- [ ] XSS prevention enabled
- [ ] Input validation comprehensive
- [ ] Status: **PASS/FAIL**

### A04:2023 Insecure Design
- [ ] Security by design implemented
- [ ] Threat modeling completed
- [ ] Security requirements documented
- [ ] Status: **PASS/FAIL**

### A05:2023 Security Misconfiguration
- [ ] Security headers configured
- [ ] Default credentials removed
- [ ] Error messages sanitized
- [ ] Status: **PASS/FAIL**

### A06:2023 Vulnerable & Outdated Components
- [ ] Dependencies up-to-date
- [ ] No known vulnerabilities
- [ ] Update strategy in place
- [ ] Status: **PASS/FAIL**

### A07:2023 Authentication Failures
- [ ] Strong password policies enforced
- [ ] Session management secure
- [ ] Account lockout after failed attempts
- [ ] Status: **PASS/FAIL**

### A08:2023 Data Integrity Failures
- [ ] Data validation enforced
- [ ] Integrity checking implemented
- [ ] Serialization attacks prevented
- [ ] Status: **PASS/FAIL**

### A09:2023 Logging & Monitoring Failures
- [ ] Comprehensive logging
- [ ] Security monitoring enabled
- [ ] Alerting configured
- [ ] Status: **PASS/FAIL**

### A10:2023 SSRF
- [ ] Server-side requests validated
- [ ] URL scheme validation
- [ ] No SSRF vulnerabilities found
- [ ] Status: **PASS/FAIL**

---

## 9. Compliance & Standards

### 9.1 Standards Compliance
- [ ] GDPR compliance (if applicable)
- [ ] CCPA compliance (if applicable)
- [ ] PCI DSS compliance (if handling payments)
- [ ] SOC 2 controls implemented
- [ ] ISO 27001 controls mapped

### 9.2 Data Privacy
- [ ] Privacy policy current
- [ ] Data retention policy defined
- [ ] Data deletion procedures documented
- [ ] User consent mechanisms implemented
- [ ] Data export functionality available
- [ ] Breach notification plan in place

---

## 10. Testing & Verification

### 10.1 Security Testing
- [ ] Penetration testing completed
- [ ] Vulnerability scanning completed
- [ ] DAST (Dynamic Application Security Testing)
- [ ] SAST (Static Application Security Testing)
- [ ] Security code review completed

### 10.2 Automated Testing
- [ ] Security test cases in CI/CD
- [ ] Dependency vulnerability scanning
- [ ] Static code analysis enabled
- [ ] Container scanning enabled

---

## Audit Results Summary

### Overall Security Posture
- **Status:** [PASS/FAIL]
- **Critical Issues:** [Number]
- **High Priority Issues:** [Number]
- **Medium Priority Issues:** [Number]
- **Low Priority Issues:** [Number]

### Critical Issues (Must Fix Before Release)
1. [Issue]: [Description]
   - Impact: [High/Critical]
   - Remediation: [Steps]
   - Due Date: [Date]

2. [Issue]: [Description]
   - Impact: [High/Critical]
   - Remediation: [Steps]
   - Due Date: [Date]

### High Priority Issues (Should Fix)
1. [Issue]: [Description]
   - Impact: [High]
   - Remediation: [Steps]
   - Timeline: [Timeline]

### Medium Priority Issues (Consider Fixing)
1. [Issue]: [Description]
   - Impact: [Medium]
   - Remediation: [Steps]
   - Timeline: [Timeline]

---

## Remediation Plan

### Critical Issues
| Issue | Due Date | Assigned To | Status |
|-------|----------|-------------|--------|
| [Issue] | [Date] | [Person] | [Pending/In Progress/Complete] |

### High Priority Issues
| Issue | Timeline | Assigned To | Status |
|-------|----------|-------------|--------|
| [Issue] | [Timeline] | [Person] | [Pending/In Progress/Complete] |

---

## Sign-off

- [ ] Security Lead: _________________ Date: _______
- [ ] Tech Lead: _________________ Date: _______
- [ ] DevOps Lead: _________________ Date: _______
- [ ] Compliance Officer (if applicable): _________________ Date: _______

---

## References

- OWASP Top 10: https://owasp.org/Top10/
- CWE Top 25: https://cwe.mitre.org/top25/
- NIST Cybersecurity Framework: https://www.nist.gov/cyberframework/
- Supabase Security: https://supabase.com/docs/guides/platform/security
- WorkOS Security: https://workos.com/docs/security

---

**Audit Date:** January 30, 2026
**Next Audit:** [Scheduled Date]
**Status:** In Progress
