October 27, 2025 - Comprehensive REST API security testing checklist covering authentication, validation, encryption, and monitoring to protect APIs from modern cyber threats.

Web API Pentesting (https://book.hacktricks.xyz/network-services-pentesting/pentesting-web/web-api-pentesting) Resources and tools (https://www.apisec.ai/blog/api-security-checklist) Common end points (https://github.com/danielmiessler/SecLists/blob/master/Discovery/Web-Content/common-api-endpoints-mazen160.txt) A collection of useful resources for building RESTful HTTP+JSON APIs (https://github.com/yosriady/api-development-tools)

August 26, 2026 - TCM Security’s Practical API Hacking course https://portswigger.net/web-security/jwt https://owasp.org/API-Security/editions/2023/en/0x11-t10/ https://cheatsheetseries.owasp.org/cheatsheets/REST_Security_Cheat_Sheet.html https://github.com/shieldfy/API-Security-Checklist https://owasp.org/www-chapter-vancouver/assets/presentations/2020-01_Attacking_and_Securing_JWT.pdf https://owasp.org/www-chapter-belgium/assets/2021/2021-02-18/JWT-Security.pdf ·

Inspecting the application does not reveal the attack surface, I.e. the URLs and parameter structure used by the RESTful web service.

A comprehensive collection of resources designed to help you enhance the security of your APIs. In this repository, you'll find a wide range of wordlists, checklists, vulnerable app setups, Logger++ filters and resources dedicated to REST APIs, ...

API Testing Checklist. ... This challenge is Inon Shkedy's 31 days API Security Tips. ... REST API Tutorial blog entry.

December 12, 2022 - This is the goal of API penetration testing. There is no single checklist for performing API penetration testing, as the process will vary depending on the specific API and its security vulnerabilities.

May 13, 2025 - API Pentesting is essential to uncover vulnerabilities that could lead to data leaks, operation tampering, or unauthorized system control. In this post, you’ll find a practical and technical checklist to help secure your APIs—whether REST, WebSocket, GraphQL, or SOAP—from end to end.

2 days ago - Additional tools like automatic-api-attack-tool, Astra, and restler-fuzzer offer tailored functionalities for API security testing, ranging from attack simulation to fuzzing and vulnerability scanning. Cherrybomb performs API-security checks from an OpenAPI Specification document.[10] OWASP API Security Top 10: Essential reading for understanding common API vulnerabilities (OWASP Top 10). API Security Checklist: A comprehensive checklist for securing APIs (GitHub link).

April 21, 2026 - Assess the API’s defenses against various attack vectors, including SQL, XSS, OS command injection, broken authentication and session management, and denial of service attacks ... Integration testing is vital for REST APIs because it checks how they play with other parts of the system.

A comprehensive checklist for API security assessment, covering REST API, GraphQL, and more.

August 11, 2025 - Verify if the API logs all the incoming requests, errors, and responses. Check if sensitive data is encrypted both in transit and at rest.

April 16, 2026 - Identify exposed or undocumented endpoints: Continuously discover APIs, including internal or deprecated ones. Validate CORS, CSRF, and caching policies: Restrict origins, use anti-forgery tokens, and prevent sensitive data from being cached.

February 26, 2026 - I recently stumbled upon a GitHub repo by Shieldify that contained an API security checklist of the most important countermeasures to consider when designing, testing, and releasing an application programming interface. While it’s not the most comprehensive REST API security testing checklist out there, it does a pretty good job of covering many of the important things that the blue team needs to think about.

October 10, 2024 - Data Privacy and Protection Objective: Review how sensitive data is transmitted and stored within the API. Ensure that sensitive information is encrypted during transmission (using protocols like HTTPS) and adequately protected at rest.

April 23, 2024 - During testing, a pentester discovers an undocumented parameter that allows adding arbitrary data to customer orders. This could be a vulnerability if the additional data isn’t properly sanitized and validated. Many applications rely on external APIs to function. However, if these APIs are not consumed securely, it can introduce vulnerabilities into your application. This checklist point focuses on identifying weaknesses in your application’s interaction with external APIs.

May 10, 2026 - REST APIs are usually tested by reviewing endpoints, HTTP methods, request parameters, JSON bodies, object identifiers, authentication flows, authorization rules, rate limits, and API versioning.

May 18, 2026 - APIs are now a primary attack surface, with a growing share of real-world attacks targeting API endpoints directly. Effective REST API security testing focuses on endpoints, data flows, and authorization – not just user interfaces.

July 8, 2025 - APIs are the backbone of modern applications, yet critical vulnerabilities remain overlooked due to poor implementation. This checklist combines battle-tested methodologies from enterprise pentests and bug bounty programs, with actionable steps to identify high-impact flaws.