# Security Testing TODOs

## Overview
Critical security testing gaps that expose the application to various attack vectors and compliance issues.

---

## 🔴 High Priority Items

### security-csrf-001: Implement CSRF protection with token-based validation and testing
**File Location**: Multiple locations - middleware, forms, API routes
**Current State**: No CSRF protection implementation
**Impact**: Critical - Cross-site request forgery attacks possible
**Estimated Effort**: 24 hours

**Specific Tasks**:
- [ ] Implement CSRF token generation middleware
- [ ] Add CSRF token validation to API routes
- [ ] Integrate CSRF tokens with forms (React forms)
- [ ] Create CSRF token rotation mechanism
- [ ] Add double-submit cookie pattern
- [ ] Implement SameSite cookie attributes
- [ ] Create comprehensive CSRF attack tests
- [ ] Test token expiration and renewal

**Implementation Needed**:
```typescript
// CSRF middleware
export async function csrfProtection(req: Request) {
  // Generate/validate CSRF tokens
}

// Form integration
const csrfToken = await getCsrfToken();
// Include in forms and API requests
```

**Test Cases Needed**:
```typescript
describe('CSRF Protection', () => {
  test('should prevent cross-site requests without token');
  test('should validate CSRF tokens correctly');
  test('should rotate tokens properly');
  test('should handle token expiration');
  test('should prevent token reuse');
});
```

---

### security-xss-001: Add comprehensive XSS prevention and input sanitization testing
**File Location**: Actions, components, API routes
**Current State**: Basic CSP only, no input sanitization
**Impact**: Critical - XSS attacks could steal user data
**Estimated Effort**: 28 hours

**Specific Tasks**:
- [ ] Implement input sanitization library (DOMPurify)
- [ ] Add output encoding for dynamic content
- [ ] Sanitize user-generated content in product reviews
- [ ] Sanitize search parameters and query strings
- [ ] Add content security policy headers
- [ ] Implement HTTP-only cookies for sensitive data
- [ ] Create XSS payload testing suite
- [ ] Test reflected, stored, and DOM-based XSS

**Critical Test Cases**:
```typescript
describe('XSS Prevention', () => {
  test('should sanitize script tags in user input');
  test('should handle event handler injection');
  test('should prevent CSS-based attacks');
  test('should sanitize HTML attributes');
  test('should handle Unicode-based attacks');
  test('should prevent protocol-relative URLs');
});
```

---

### security-sqli-001: Implement SQL injection testing with malicious payloads
**File Location**: All database operations in actions/
**Current State**: Uses parameterized queries but no injection testing
**Impact**: Critical - SQL injection could expose/destroy data
**Estimated Effort**: 20 hours

**Specific Tasks**:
- [ ] Create SQL injection payload test suite
- [ ] Test all parameterized queries with malicious inputs
- [ ] Test UNION-based injection attempts
- [ ] Test blind SQL injection scenarios
- [ ] Test time-based injection attacks
- [ ] Test NoSQL injection in Redis queries
- [ ] Add database privilege validation
- [ ] Test error message information disclosure

**Test Cases Needed**:
```typescript
describe('SQL Injection Prevention', () => {
  test('should prevent classic SQL injection');
  test('should handle UNION-based attacks');
  test('should prevent time-based attacks');
  test('should sanitize search parameters');
  test('should handle quote escaping');
  test('should prevent comment-based attacks');
});
```

---

### security-session-001: Add session security testing (timeout, fixation, concurrent sessions)
**File Location**: Authentication logic, middleware
**Current State**: Basic JWT implementation, no security testing
**Impact**: Critical - Session hijacking and fixation attacks
**Estimated Effort**: 24 hours

**Specific Tasks**:
- [ ] Implement session timeout mechanism
- [ ] Add session ID regeneration on login
- [ ] Implement concurrent session limits
- [ ] Add secure cookie attributes (HttpOnly, Secure, SameSite)
- [ ] Create session fixation attack tests
- [ ] Test session hijacking prevention
- [ ] Implement session invalidation on logout
- [ ] Add session activity monitoring

**Test Cases Needed**:
```typescript
describe('Session Security', () => {
  test('should timeout inactive sessions');
  test('should regenerate session ID on login');
  test('should limit concurrent sessions');
  test('should prevent session fixation');
  test('should invalidate sessions on logout');
  test('should handle session hijacking attempts');
});
```

---

## 🟡 High Priority Items

### security-gdpr-001: Implement GDPR compliance testing (data deletion, export, consent)
**File Location**: User management, data handling
**Current State**: No GDPR compliance features
**Impact**: Medium - Legal compliance issues
**Estimated Effort**: 32 hours

**Specific Tasks**:
- [ ] Implement data portability (export) functionality
- [ ] Create right to be forgotten (deletion) feature
- [ ] Add consent management system
- [ ] Implement data retention policies
- [ ] Add cookie consent management
- [ ] Create data breach notification system
- [ ] Test GDPR compliance workflows
- [ ] Add audit logging for data operations

---

### security-payment-001: Add webhook replay attack and payment state consistency testing
**File Location**: Stripe webhook handlers
**Current State**: Basic webhook signature verification
**Impact**: Medium - Payment fraud and state inconsistencies
**Estimated Effort**: 20 hours

**Specific Tasks**:
- [ ] Implement webhook replay attack prevention
- [ ] Add webhook idempotency checks
- [ ] Test payment state consistency
- [ ] Implement webhook replay detection
- [ ] Add payment state validation
- [ ] Test concurrent payment processing
- [ ] Create payment fraud detection tests
- [ ] Test payment rollback scenarios

---

## Additional Security Gaps Identified

### Authentication Security
- **Missing**: Password complexity requirements
- **Missing**: Account lockout after failed attempts
- **Missing**: Multi-factor authentication
- **Missing**: Password reset flow security

### Authorization Security
- **Missing**: Role-based access control (RBAC)
- **Missing**: Cross-tenant data access prevention
- **Missing**: API rate limiting
- **Missing**: Resource ownership validation

### Infrastructure Security
- **Missing**: Security headers (HSTS, X-Frame-Options, etc.)
- **Missing**: HTTPS enforcement
- **Missing**: Environment variable security
- **Missing**: Dependency vulnerability scanning

---

## Implementation Roadmap

**Phase 1** (Week 1): Immediate Security Fixes
1. security-csrf-001 (CSRF protection) - Prevents common attacks
2. security-xss-001 (XSS prevention) - Protects user data

**Phase 2** (Week 2): Data Protection
3. security-sqli-001 (SQL injection testing) - Protects database
4. security-session-001 (Session security) - Prevents hijacking

**Phase 3** (Week 3): Advanced Security
5. security-payment-001 (Payment security) - Protects revenue
6. security-gdpr-001 (GDPR compliance) - Legal compliance

---

## Security Testing Strategy

### OWASP Top 10 Coverage
```typescript
// A01: Broken Access Control → security-session-001, RBAC testing
// A02: Cryptographic Failures → Payment security testing
// A03: Injection → security-sqli-001
// A05: Security Misconfiguration → Headers and config testing
// A06: Vulnerable Components → Dependency scanning
// A07: Authentication Failures → Session and auth testing
// A10: Server-Side Request Forgery → API security testing
```

### Security Test Categories
```typescript
describe('Security Test Suite', () => {
  describe('Input Validation');
  describe('Authentication & Session Management');
  describe('Authorization & Access Control');
  describe('Cryptographic Storage');
  describe('Error Handling & Logging');
  describe('Data Protection');
  describe('Communication Security');
  describe('Infrastructure Security');
});
```

---

## Tools and Libraries Recommended

### Security Testing Tools
- **OWASP ZAP**: Automated security scanning
- **SQLMap**: SQL injection testing
- **Burp Suite**: Web application security testing
- **Snyk**: Dependency vulnerability scanning

### Security Libraries
- **helmet**: Security headers
- **dompurify**: XSS protection
- **bcrypt**: Password hashing (already used)
- **jsonwebtoken**: JWT handling (already used)
- **csurf**: CSRF protection

---

## Success Metrics

- Security test coverage: 95%+
- OWASP Top 10 compliance: 100%
- Penetration test results: Zero high-severity findings
- Vulnerability scan results: Zero critical vulnerabilities
- Security audit compliance: 100%
- Data breach incidents: 0

---

## Notes for Implementation

1. **Security First**: All security tests should run before functional tests
2. **Fail Fast**: Security test failures should block deployment
3. **Regular Scanning**: Automated daily security scans in CI
4. **Penetration Testing**: Quarterly professional penetration tests
5. **Security Reviews**: Code reviews focused on security implications

This comprehensive security testing plan addresses the most critical vulnerabilities and ensures compliance with industry standards and regulations.