The vulnerabilities that account for the overwhelming majority of real breaches, explained from first principles, with the specific code changes that fix each one.
One-time access
$19
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project-based
build · ship · explain
Curriculum
Work through 4 lessons across a structured 9 hour course designed around practical application.
The vulnerability class that has topped the OWASP list for over a decade.
Passwords, sessions, and the attacks that target them.
CSRF, CORS, and the headers that limit what an attack can do.
Projects
Complete focused builds that connect individual lessons into demonstrable development workflows.
Build 01
Rebuild a login system with Argon2id hashing, rotating sessions and server-side authorization checks.
Build 02
Find and fix every injection vector in a sample application, then verify the fixes with tests.
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Refund, privacy, terms and disclaimer pages are public and written in plain language before you buy.
Questions about billing, access or course fit go to support@devtoolchain.store and are answered directly.
Course FAQ
Yes. The Full-Stack Web Development Bootcamp and the Web Development Freelancing course both start from absolute first principles and assume no prior coding experience. The AI-Powered Web Development course is written for developers who already ship code, and states its prerequisites on the course page before you buy.
Not for the beginner courses. You need a computer with an internet connection, a code editor, and the willingness to build things that do not work yet. If you have never written code before, start with the Full-Stack Web Development Bootcamp.
Completely. There are no live sessions, no cohort schedule and no deadlines. Lessons are unlocked the moment your purchase is confirmed and you can work through them in any order you prefer, on any device.
Yes. Every purchase is a one-time payment for lifetime access to that course, including future updates to its lessons. We do not run subscriptions, renewals or automatic charges.
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The vulnerabilities that account for the overwhelming majority of real breaches, explained from first principles, with the specific code changes that fix each one.