Question 1

What are the most common API security vulnerabilities?

Accepted Answer

The OWASP API Security Top 10 highlights broken object-level authorization (BOLA/IDOR), broken authentication, excessive data exposure, lack of rate limiting, broken function-level authorization, mass assignment, security misconfiguration, injection, improper asset management, and insufficient logging. APIs are particularly vulnerable because they expose application logic and data directly.

Question 2

How can APIs be secured against attacks?

Accepted Answer

Best practices include implementing strong authentication (OAuth 2.0, API keys with rotation), enforcing authorization at every endpoint, validating and sanitizing all input, applying rate limiting and throttling, using TLS for all communications, returning only necessary data fields, logging all access for monitoring, versioning APIs properly, and conducting regular security testing with tools like Burp Suite or OWASP ZAP.

API Security

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