# Security Recommendations for myCRM

## Implemented Security Measures

### 1. Authentication & Authorization
- ✅ Session-based authentication (stateless: false)
- ✅ Role-based access control (RBAC)
- ✅ API endpoints protected with `is_granted()` checks
- ✅ User can only edit own profile or requires ROLE_ADMIN
- ✅ System roles protected via SystemRoleProtection validator

### 2. Password Security
- ✅ Passwords hashed via Symfony PasswordHasher
- ✅ Plain passwords erased after hashing
- ✅ No passwords in serialization groups

### 3. XSS Prevention
- ✅ Vue.js automatic escaping
- ✅ No v-html or innerHTML usage
- ✅ All user input properly escaped

### 4. CSRF Protection
- ✅ Session-based API (SameSite cookies)
- ✅ credentials: 'same-origin' in fetch calls

## Recommended Additional Measures

### 1. Rate Limiting
Consider implementing rate limiting for API endpoints:
```bash
composer require symfony/rate-limiter
```

Configuration example in `config/packages/rate_limiter.yaml`:
```yaml
framework:
    rate_limiter:
        api_login:
            policy: 'sliding_window'
            limit: 5
            interval: '1 minute'
        api_general:
            policy: 'fixed_window'
            limit: 100
            interval: '1 hour'
```

### 2. HTTPS Only (Production)
Ensure HTTPS is enforced in production:
```yaml
# config/packages/framework.yaml (when@prod)
framework:
    session:
        cookie_secure: true
        cookie_samesite: 'strict'
```

### 3. Content Security Policy
Add CSP headers via `nelmio/security-bundle`:
```bash
composer require nelmio/security-bundle
```

### 4. Input Validation
- ✅ Email validation (Symfony built-in)
- ✅ Required field validation
- Consider adding: max length validation, sanitization

### 5. Audit Logging
Consider logging sensitive operations:
- User creation/deletion
- Role assignment changes
- Permission modifications

### 6. Database Security
- ✅ Prepared statements via Doctrine (SQL injection protected)
- ✅ Unique constraints on email/role+module combinations
- Consider: Database encryption for sensitive fields

### 7. Error Handling
Current: Errors exposed in dev mode
Production: Ensure debug mode is disabled and errors are logged securely

## Security Checklist for Deployment

- [ ] Set `APP_ENV=prod` and `APP_DEBUG=0`
- [ ] Enable HTTPS with valid SSL certificate
- [ ] Set secure session cookie settings
- [ ] Implement rate limiting
- [ ] Set up security headers (CSP, X-Frame-Options, etc.)
- [ ] Regular dependency updates (`composer update`)
- [ ] Database backups configured
- [ ] Error logging to secure location
- [ ] Monitor authentication failures
- [ ] Review and rotate secrets in `.env`