Security Best Practices
Security isn't a feature you add at the end — it's a consideration at every stage of development. This guide covers the security practices we implement as standard and what you should expect from any properly built business application.
Authentication & Authorization
Every application with user accounts implements proper authentication — password hashing with bcrypt, session management with secure tokens, and role-based access control. We don't build custom authentication from scratch when established solutions exist — we use proven libraries and patterns.
Input Validation & Sanitization
Every piece of data entering the system is validated and sanitized. This prevents SQL injection, cross-site scripting (XSS), and other injection attacks. We validate on both the frontend (for user experience) and the backend (for security — frontend validation can always be bypassed).
Data Protection
Sensitive data is encrypted at rest and in transit. Passwords are never stored in plain text. Personal data is handled according to applicable data protection regulations. We minimize data collection — only storing what's necessary for the application to function.
API Security
All API endpoints require appropriate authentication. Rate limiting prevents abuse. CORS is configured to allow only intended origins. Sensitive operations require re-authentication or additional verification. API responses don't expose internal system details in error messages.
Infrastructure Security
Servers are configured with security in mind — firewall rules, minimal exposed ports, disabled unnecessary services, and regular security updates. Environment variables store secrets — never in code repositories. Access to production environments is restricted and logged.
What We Don't Claim
No system is perfectly secure, and we won't claim otherwise. We implement industry-standard practices that significantly reduce risk, but security requires ongoing attention. We recommend periodic security reviews, especially as the system evolves and new vulnerabilities are discovered.
Key Takeaways
- Authentication uses proven libraries, not custom implementations
- All input is validated on both frontend and backend
- Sensitive data is encrypted at rest and in transit
- APIs have authentication, rate limiting, and proper CORS configuration
- Security is ongoing — periodic reviews are recommended
Related Guides
Put This Into Practice
Now that you understand how we work, let's talk about your project.