• SECRET_KEY: Moved Django secret key to environment variable
• Firebase Config: All Firebase credentials moved to environment variables
• Database URL: Database connection string moved to environment variable
• CORS Origins: Restricted CORS to specific domains

• Key Sanitization: Database keys are sanitized to prevent injection attacks
• Input Size Limits: Added 10KB limit on input data to prevent abuse
• Type Validation: Enhanced input validation with proper type checking
• Directory Traversal Protection: Prevents ../ and similar patterns

• X-Content-Type-Options: Prevents MIME type sniffing
• X-Frame-Options: Prevents clickjacking attacks
• X-XSS-Protection: Enables browser XSS protection
• Referrer-Policy: Controls referrer information
• HSTS: HTTP Strict Transport Security headers

• IP-based Rate Limiting: 100 requests per hour per IP
• DRF Throttling: Additional rate limiting through Django REST Framework
• Anonymous Rate Limit: 100 requests/hour
• User Rate Limit: 1000 requests/hour

• Restricted Origins: Only specific domains allowed
• Credentials: CORS credentials properly configured
• Removed Wildcard: No more CORS_ORIGIN_ALLOW_ALL = True

• Generic Error Messages: No sensitive information in error responses
• Proper HTTP Status Codes: Correct status codes for different error types
• Exception Logging: Errors are logged (implement proper logging in production)

• DRF Authentication: Session and Token authentication configured
• Permission Classes: Default authentication required (temporarily disabled for API endpoints)
• Password Validation: Enhanced password requirements

Create a .env file with the following variables:

# Django Settings
DJANGO_SECRET_KEY=your-secure-secret-key-here
DEBUG=False
ALLOWED_HOSTS=your-domain.com,www.your-domain.com

# CORS Settings
CORS_ALLOWED_ORIGINS=https://your-frontend-domain.com

# Database
DATABASE_URL=your-production-database-url

# Firebase Configuration
FIREBASE_API_KEY=your-firebase-api-key
FIREBASE_AUTH_DOMAIN=your-firebase-auth-domain
FIREBASE_PROJECT_ID=your-firebase-project-id
FIREBASE_STORAGE_BUCKET=your-firebase-storage-bucket
FIREBASE_MESSAGING_SENDER_ID=your-firebase-messaging-sender-id
FIREBASE_APP_ID=your-firebase-app-id
FIREBASE_DATABASE_URL=your-firebase-database-url

1. Use HTTPS: Always use HTTPS in production
2. Database: Use a production database (PostgreSQL recommended)
3. Redis: Implement Redis for rate limiting in production
4. Logging: Set up proper logging with rotation
5. Monitoring: Implement application monitoring
6. Backup: Regular database backups
7. Updates: Keep dependencies updated

The application now includes these security headers:

• X-Content-Type-Options: nosniff
• X-Frame-Options: DENY
• X-XSS-Protection: 1; mode=block
• Referrer-Policy: strict-origin-when-cross-origin
• Strict-Transport-Security: max-age=31536000; includeSubDomains; preload

• IP-based: 100 requests per hour per IP address
• DRF Throttling: Additional rate limiting through Django REST Framework
• Anonymous: 100 requests/hour
• Authenticated: 1000 requests/hour

• All user inputs are validated and sanitized
• Database keys are sanitized to prevent injection
• Input size is limited to prevent abuse
• Type checking is enforced

1. ✅ Hardcoded Secrets: Moved to environment variables
2. ✅ CORS Misconfiguration: Restricted to specific origins
3. ✅ Missing Security Headers: Added comprehensive security headers
4. ✅ No Rate Limiting: Implemented rate limiting
5. ✅ Input Injection: Added input sanitization
6. ✅ Error Information Disclosure: Generic error messages
7. ✅ Directory Traversal: Protected against path traversal attacks

1. Dependency Updates: Run pip list --outdated and update packages
2. Security Audits: Regular security assessments
3. Log Review: Monitor application logs for suspicious activity
4. Backup Verification: Test backup restoration procedures

Consider implementing:

• Django Security: python manage.py check --deploy
• Bandit: Python security linter
• Safety: Check for known security vulnerabilities
• OWASP ZAP: Web application security scanner

1. Immediate Actions:

   • Change all API keys and secrets
   • Review logs for unauthorized access
   • Check for data exfiltration
   • Update all passwords

2. Investigation:

   • Preserve logs and evidence
   • Identify attack vector
   • Assess impact

3. Recovery:

   • Restore from clean backup
   • Implement additional security measures
   • Monitor for repeat attacks

For security issues, please contact the development team immediately.