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

Defending against API business-level attacks

Finally, let us conclude this chapter by looking at the two business-level vulnerabilities included in the OWASP API Security Top 10 2023.

Unrestricted access to sensitive business flows

This vulnerability results when an attacker can abuse the standard flow of an API-based application to subvert the original business intent to their benefit. Typical examples include abuse of airline ticket booking systems, online event ticketing systems, or various online retailers.

The exact nature of the abuse will depend on the specifics of the industry and how their API design maps to their business flows. Unfortunately, this is one of the hardest vulnerabilities to defend against because, unlike many of the others covered already, there is no single point of fix. In fact, the APIs themselves may be flawless, but by being used in a nefarious fashion, they expose the business to risk.

Typically, risk minimization involves both the business...