API Security Testing Guide by The XSS Rat
Course Overview
About This Free Course
About the course
In this course we will be teaching you a very important way of hacking and building APIs with practical labs and examples you will get a feel for these issues sooner than you can say "API".
With the rise of software and master go golang build scalable web applications we need to make sure to protect them as carefully as possible. This guide will be your handbook in your journey for testers, managers and software developers.
We will bring you from a beginner to an advances level in no time and with our practical examples you will even learn how to use and install an API firewall.
About me
I am the XSS Rat, an experienced ethical hacker who stands for quality and who believes knowledge is a building block we can all use to grow bigger than we ever were. As a software test i have a unique skill set that centers around logic flaws and IDORs which i have not seen very much by other hunters. This gives me the advantage of finding less duplicates and maximising my chance of finding a vulnerability by picking the correct target and applying the correct test strategy.
What will you learn?
- The OWASP API top 10
- Building and hacking an API
- How to install an API firewall
- Hacking APIs with postman
Who is this course for?
I explain everything as clearly as possible in this course so everyone with even a basic understanding of technical topics can understand what can go wrong and how to prevent it.
Who Should Take This Course
"API Security Testing Guide by The XSS Rat" is aimed at people who want a practical, structured introduction to it without paying full price for it. It's a solid fit if you're starting out in it and want a guided course rather than piecing tutorials together yourself, if you've tried free YouTube content on the topic and want something more organized in around 3.5, or if you already work in a related area and want a refresher you can finish at your own pace. Since enrollment happens on Udemy itself, you keep full access to view the lectures, download any provided resources, and revisit the material later — this isn't a stripped-down or time-limited version of the course.
Why This Course Is Worth Taking
Our take: this listing earns a spot on FreeWebCart because the coupon we verified actually brings the price to $0, not just a token discount, and the course carries a 4.5/5 rating on Udemy from 328+ students who've already enrolled. That combination — real reviews plus a working 100% OFF code — is what we look for before publishing a it course. It won't replace hands-on experience or a full degree program, but as a low-risk way to test whether it is worth pursuing further, or to pick up one specific skill, the free price tag makes it an easy yes while the coupon lasts.
Pros & Cons
👍 Pros
- 100% free to enroll via this coupon (normally $19.99)
- Lifetime access on Udemy once enrolled, even after the coupon expires
- Rated 4.5/5 by past students on Udemy
- Self-paced — no fixed schedule or live sessions to attend
👎 Cons
- Coupon is time-limited and can expire before you enroll
- No live instructor support — questions go through Udemy's Q&A, not us
- Certificate is a Udemy completion certificate, not an accredited qualification
Frequently Asked Questions
Is "API Security Testing Guide by The XSS Rat" really free?
Yes — we verified a 100% OFF Udemy coupon for this it course before publishing it. Enroll directly on Udemy using the button below; no credit card is needed while the coupon is active.
How long will this coupon last?
Udemy coupons typically last 1–3 days or expire after roughly 1,000 enrollments, whichever comes first. If the price on Udemy no longer shows $0 when you click through, the coupon has expired since we last checked it.
Do I keep access after the coupon expires?
Yes. Once you enroll while the coupon is live, "API Security Testing Guide by The XSS Rat" is yours to keep on Udemy — including any future updates the instructor makes — even after the coupon runs out.
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