Building Secure REST APIs: A Comprehensive Guide

APIs are increasingly targeted by attackers. Here's how to secure them.

Authentication and Authorization

•Use JWT tokens with proper expiration

•Implement OAuth 2.0 for third-party access

•Use role-based access control (RBAC)

•Validate all input on the server side

•Use parameterized queries to prevent SQL injection

•Implement rate limiting

Never transmit sensitive data over HTTP. Use TLS 1.3 wherever possible.

Properly version your APIs and implement sunset policies for old versions.

Log all API calls, especially authentication attempts, and monitor for anomalies.