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Security Implementation Guide
Comprehensive security documentation covering authentication, authorization, monitoring, and best practices.
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Updated 2 days ago
# Security Implementation Guide
## Authentication & Authorization
### Multi-layered Authentication
The WorkPulse platform implements comprehensive authentication:
#### 1. Web Authentication
- Laravel Sanctum for SPA authentication
- Session-based authentication for web interface
- Remember me functionality with secure cookies
- Multi-factor authentication ready
#### 2. API Authentication
- Bearer token authentication for desktop apps
- JWT tokens for mobile applications
- API key authentication for third-party integrations
- Scoped permissions for different access levels
#### 3. Desktop App Authentication
```cpp
// Secure token storage in desktop app
QSettings settings("CaptureSystem", "CaptureApp");
QString encryptedToken = encryptToken(authToken);
settings.setValue("authToken", encryptedToken);
// Token validation before API calls
void MainWindow::addAuthHeaderIfNeeded(QNetworkRequest &request) {
if (!authToken.isEmpty()) {
request.setRawHeader("Authorization", "Bearer " + authToken.toUtf8());
}
}
```
### Role-Based Access Control (RBAC)
#### Permission System
Using Spatie Laravel Permission package:
```php
// Define permissions
Permission::create(['name' => 'manage_projects']);
Permission::create(['name' => 'view_reports']);
Permission::create(['name' => 'system_admin']);
// Assign to roles
$adminRole = Role::create(['name' => 'admin']);
$adminRole->givePermissionTo(['manage_projects', 'view_reports', 'system_admin']);
// Check permissions in controllers
public function index()
{
$this->authorize('manage_projects');
// Controller logic
}
```
#### Feature-Based Access Control
```php
// Middleware for feature access
class CheckFeatureAccess
{
public function handle($request, Closure $next, $feature)
{
$tenant = tenant();
if (!$tenant->hasFeature($feature)) {
return response()->json([
'error' => 'Feature not available in current plan',
'required_feature' => $feature,
'upgrade_url' => route('subscription.plans')
], 403);
}
return $next($request);
}
}
```
## Data Protection
### Encryption
#### At Rest Encryption
- Database encryption for sensitive fields
- File storage encryption with AES-256
- Encrypted backups with rotating keys
- Secure configuration storage
```php
// Model attribute encryption
class User extends Model
{
protected $casts = [
'social_security_number' => 'encrypted',
'bank_account' => 'encrypted',
];
}
```
#### In Transit Encryption
- HTTPS enforced for all communications
- TLS 1.3 minimum for API connections
- Certificate pinning in desktop application
- Secure WebSocket connections (WSS)
### Data Anonymization
```php
// GDPR compliance - data anonymization
class AnonymizeUserData
{
public function handle(User $user)
{
$user->update([
'name' => 'Anonymized User',
'email' => 'anonymized_' . $user->id . '@deleted.com',
'phone' => null,
'address' => null,
]);
// Anonymize related data
$user->timeEntries()->update([
'description' => '[Anonymized]',
'notes' => null
]);
}
}
```
## Security Monitoring
### Login Activity Tracking
```php
class TrackLoginActivity
{
public function handle($user, $request)
{
LoginActivity::create([
'user_id' => $user->id,
'ip_address' => $request->ip(),
'user_agent' => $request->userAgent(),
'location' => $this->getLocationFromIP($request->ip()),
'successful' => true,
'timestamp' => now()
]);
// Check for suspicious activity
$this->checkSuspiciousActivity($user, $request);
}
}
```
### Failed Attempt Monitoring
```php
class MonitorFailedAttempts
{
public function handle($email, $request)
{
$attempts = FailedLoginAttempt::where('email', $email)
->where('created_at', '>', now()->subMinutes(15))
->count();
if ($attempts >= 5) {
// Block IP temporarily
BlockedIP::create([
'ip_address' => $request->ip(),
'reason' => 'Too many failed login attempts',
'blocked_until' => now()->addHours(1)
]);
// Send security alert
$this->sendSecurityAlert($email, $request);
}
}
}
```
### IP-Based Security
```php
class BlockedIPMiddleware
{
public function handle($request, Closure $next)
{
$blockedIP = BlockedIP::where('ip_address', $request->ip())
->where(function($query) {
$query->whereNull('blocked_until')
->orWhere('blocked_until', '>', now());
})
->first();
if ($blockedIP) {
return response()->json([
'error' => 'Access denied',
'reason' => $blockedIP->reason
], 403);
}
return $next($request);
}
}
```
## Audit Logging
### Comprehensive Audit Trail
Using Laravel Auditing package:
```php
class Project extends Model
{
use \OwenIt\Auditing\Auditable;
protected $auditEvents = [
'created', 'updated', 'deleted', 'restored'
];
protected $auditInclude = [
'name', 'description', 'status', 'budget'
];
}
```
### Security Event Logging
```php
class SecurityEventLogger
{
public function logSecurityEvent($type, $details, $severity = 'medium')
{
SecurityEvent::create([
'type' => $type,
'user_id' => auth()->id(),
'tenant_id' => tenant()?->id,
'ip_address' => request()->ip(),
'details' => $details,
'severity' => $severity,
'timestamp' => now()
]);
// Send alerts for high severity events
if ($severity === 'high') {
$this->sendSecurityAlert($type, $details);
}
}
}
```
## Input Validation & Sanitization
### Request Validation
```php
class ProjectRequest extends FormRequest
{
public function rules()
{
return [
'name' => ['required', 'string', 'max:255', 'regex:/^[a-zA-Z0-9\s\-_]+$/'],
'description' => ['nullable', 'string', 'max:1000'],
'budget' => ['nullable', 'numeric', 'min:0', 'max:9999999.99'],
'team_members' => ['array', 'max:50'],
'team_members.*' => ['exists:users,id']
];
}
public function sanitize()
{
$input = $this->all();
// Sanitize string inputs
$input['name'] = strip_tags($input['name']);
$input['description'] = strip_tags($input['description']);
$this->replace($input);
}
}
```
### File Upload Security
```php
class SecureFileUpload
{
private $allowedMimes = [
'image/jpeg', 'image/png', 'image/gif',
'application/pdf', 'text/plain'
];
public function validateFile(UploadedFile $file)
{
// Check file size (max 10MB)
if ($file->getSize() > 10 * 1024 * 1024) {
throw new ValidationException('File too large');
}
// Check MIME type
if (!in_array($file->getMimeType(), $this->allowedMimes)) {
throw new ValidationException('File type not allowed');
}
// Scan for malware (if antivirus available)
if ($this->scanForMalware($file)) {
throw new SecurityException('Malicious file detected');
}
return true;
}
}
```
## CSRF Protection
### Token Validation
```php
// Automatic CSRF protection for all forms
// API endpoints with CSRF exemption
class VerifyCsrfToken extends Middleware
{
protected $except = [
'api/desktop/v3/*', // Desktop app API
'webhooks/*' // Webhook endpoints
];
}
```
## Database Security
### SQL Injection Prevention
```php
// Always use parameterized queries
$projects = DB::table('projects')
->where('tenant_id', $tenantId)
->where('name', 'like', '%' . $searchTerm . '%')
->get();
// Eloquent ORM provides automatic protection
$projects = Project::where('name', 'like', '%' . $searchTerm . '%')->get();
```
### Database Access Control
```php
// Tenant data isolation
class TenantScope implements Scope
{
public function apply(Builder $builder, Model $model)
{
if (tenant()) {
$builder->where('tenant_id', tenant()->id);
}
}
}
```
## Security Headers
### HTTP Security Headers
```php
// Middleware to add security headers
class SecurityHeaders
{
public function handle($request, Closure $next)
{
$response = $next($request);
$response->headers->set('X-Content-Type-Options', 'nosniff');
$response->headers->set('X-Frame-Options', 'DENY');
$response->headers->set('X-XSS-Protection', '1; mode=block');
$response->headers->set('Strict-Transport-Security', 'max-age=31536000; includeSubDomains');
$response->headers->set('Content-Security-Policy', $this->getCSPPolicy());
return $response;
}
}
```
## Incident Response
### Automated Response
```php
class SecurityIncidentResponse
{
public function handleSuspiciousActivity($user, $activity)
{
// Lock user account temporarily
$user->update(['locked_until' => now()->addMinutes(30)]);
// Send notification to user
$user->notify(new SuspiciousActivityNotification($activity));
// Alert security team
$this->alertSecurityTeam($user, $activity);
// Log incident
SecurityIncident::create([
'user_id' => $user->id,
'type' => 'suspicious_activity',
'details' => $activity,
'status' => 'investigating'
]);
}
}
```
## Compliance
### GDPR Compliance
- Right to access: User data export functionality
- Right to rectification: Profile editing capabilities
- Right to erasure: Account deletion with data anonymization
- Data portability: JSON/CSV export formats
- Privacy by design: Minimal data collection
### SOC 2 Compliance Preparation
- Access controls and authentication
- Data encryption and protection
- System availability monitoring
- Processing integrity validation
- Confidentiality controls
This comprehensive security implementation ensures robust protection across all system components while maintaining usability and compliance with industry standards.
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