Book Image

Defending APIs

By : Colin Domoney
Book Image

Defending APIs

By: Colin Domoney

Overview of this book

Along with the exponential growth of API adoption comes a rise in security concerns about their implementation and inherent vulnerabilities. For those seeking comprehensive insights into building, deploying, and managing APIs as the first line of cyber defense, this book offers invaluable guidance. Written by a seasoned DevSecOps expert, Defending APIs addresses the imperative task of API security with innovative approaches and techniques designed to combat API-specific safety challenges. The initial chapters are dedicated to API building blocks, hacking APIs by exploiting vulnerabilities, and case studies of recent breaches, while the subsequent sections of the book focus on building the skills necessary for securing APIs in real-world scenarios. Guided by clear step-by-step instructions, you’ll explore offensive techniques for testing vulnerabilities, attacking, and exploiting APIs. Transitioning to defensive techniques, the book equips you with effective methods to guard against common attacks. There are plenty of case studies peppered throughout the book to help you apply the techniques you’re learning in practice, complemented by in-depth insights and a wealth of best practices for building better APIs from the ground up. By the end of this book, you’ll have the expertise to develop secure APIs and test them against various cyber threats targeting APIs.
Table of Contents (19 chapters)
1
Part 1: Foundations of API Security
6
Part 2: Attacking APIs
10
Part 3: Defending APIs

Attacking APIs

In the previous chapter, we explored the passive and active techniques that can be used to discover APIs. The focus in this chapter moves on to actively attacking and exploiting those APIs using various methods to exploit vulnerabilities in the API design or implementation. By the end of this key chapter of the book, you will be able to attack APIs on your own using various techniques. As a builder of APIs, one of the best ways to test their defense is to attack them yourself.

Secure APIs rely on strong authentication and authorization. In the first topic, we will learn how to attack by identifying design and implementation weaknesses. Fuzzing and brute force attacks are among the easiest to perform, and you will learn how to use automated attacks to crack open an API. Next, the focus turns to data-based attacks: either learning how to trick an API into accepting more data than expected (often leading to injection-based attacks) or finding APIs that leak excessive...