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

Summary

At this point, you understand all the elements of how an API is constructed. We looked at the different types of APIs in common use today and then focused on the specifics of the REST API, namely the HTTP protocol. API security is built on two foundational elements of access control, namely authentication (who is using the API) and authorization (what are they allowed to do with the API). From the origins of simple username/password authentication, we arrived at the OAuth2 framework, which is the workhorse of API access control.

Most API security vulnerabilities have their origins in poorly implemented authentication and authorization controls. We covered a number of high-level recommendations for avoiding these common pitfalls. Finally, we looked at the humble JWT, which forms the basis of API authorization, acting as your digital passport.

In the next chapter, we are going to look at how things can go wrong in practice by taking a deep dive into the most common API...