- Email/Password Sign-In Method Enabled
- Google Sign-In Method Configured
- Authorized Domains Set Up
- Email Verification Enabled
- Proper read/write permissions
- Authentication checks implemented
- Validate user data structure
- All Firebase config variables present
- Secure storage of sensitive information
- Different configs for dev/prod environments
- Enable Multi-Factor Authentication
- Set up IP address restrictions
- Monitor authentication events
- Implement rate limiting
- Check Firebase Console for any warnings
- Verify network connectivity
- Validate authentication flow
- Review error logs
- Enable offline persistence
- Implement caching strategies
- Minimize unnecessary network calls
- Regenerate API keys periodically
- Use Firebase Security Rules
- Implement proper error handling