API Security: Common Mistakes in Modern Web Applications

A review of common vulnerabilities in API security and the actionable design and monitoring practices needed to protect modern web applications.

The Growing Importance of APIs

Modern web and mobile applications communicate largely through APIs, making the API layer an attractive target for attackers.

Frequently Encountered Vulnerabilities

Weak authentication, excessive data exposure, lack of rate limiting, and broken object-level authorization are among the most common issues.

Secure Design Principles

Input validation, least-privilege token management, and regular API security testing form the foundation of a secure API architecture.

Monitoring and Logging

Comprehensive logging and real-time monitoring for anomalous request patterns allow attacks at the API layer to be detected early.