API Penetration Testing

API Penetration Testing involves testing application programming interfaces (APIs) for vulnerabilities such as authentication flaws, data exposure, rate-limiting issues, and improper access control. The goal is to identify weaknesses in the communication between systems.

Testing Standards:

• OWASP API Security Top 10
• NIST SP 800-204A (Building Secure Microservices-Based Applications)

Tools:

• Postman: For API testing and security validation.
• Burp Suite: For intercepting and modifying API requests and responses.
• OWASP ZAP: For scanning APIs for vulnerabilities.

Techniques:

• Testing for broken authentication and session management
• Fuzzing API endpoints for input validation issues
• Analyzing rate-limiting and throttling mechanisms
• Testing for improper error handling and sensitive data exposure