APIs are the backbone of modern applications — and a prime target for attackers. Whether you're building internal APIs or exposing data to external partners, security must be a top priority from day one.
In this guide, we cover the essential API security practices every team should implement.
1. Use Strong Authentication
Never expose an API endpoint without authentication. The most common methods are:
- API Keys — Simple, effective for server-to-server communication
- OAuth 2.0 — Best for user-facing applications
- JWT (JSON Web Tokens) — Stateless authentication for microservices
ApiBanana supports all three methods out of the box, configured through the visual dashboard.
2. Encrypt Everything
All API traffic should use TLS 1.2+ (ideally TLS 1.3). This encrypts data in transit and prevents man-in-the-middle attacks.
For stored credentials and sensitive data, use AES-256 encryption at rest. At ApiBanana, we encrypt all database credentials with AES-256-CBC — they're never stored in plain text.
3. Implement Rate Limiting
Rate limiting prevents abuse and DDoS attacks. Configure limits based on your use case:
- Public APIs — 60-100 requests/minute per IP
- Authenticated APIs — 300-1,000 requests/minute per key
- Internal APIs — Higher limits with monitoring
4. Validate All Input
Never trust client input. Validate data types, lengths, ranges, and formats on every request. Use parameterized queries to prevent SQL injection.
5. Configure CORS Properly
Cross-Origin Resource Sharing (CORS) controls which domains can call your API from a browser. Never use Access-Control-Allow-Origin: * on authenticated endpoints.
6. Monitor and Log Everything
Implement comprehensive logging for:
- All authentication attempts (success and failure)
- Request volume, error rates, and latency
- Data access patterns and anomalies
ApiBanana includes built-in analytics dashboards and audit logging for all API calls.
7. Keep APIs Updated
Regularly review and update your API security configuration. Remove unused endpoints, rotate API keys, and monitor for vulnerabilities.
Conclusion
API security isn't optional — it's foundational. By implementing these practices, you protect your data, your users, and your business.
Get started with ApiBanana — enterprise-grade security is included in every plan, from free to business.