Chapter 3 of 10 · Web Security Basics 30%

🏗️ XSS has been in the OWASP Top 10 for over 20 years because browsers trust HTML they receive, even when they shouldn't

Your browser turns every HTML page into a living structure called the DOM. You'll see how forms submit data, where scripts execute, and why injecting a single tag can hijack a session. 🧬

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Web Security Basics

🏗️ XSS has been in the OWASP Top 10 for over 20 years because browsers trust HTML they receive, even when they shouldn't

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Course Chapters

HTTP requests and responses

URLs, domains, and DNS

HTML and the browser

Cookies and sessions

Authentication mechanisms

HTTPS and TLS

Same-origin policy and CORS

HTTP security headers

Common web vulnerabilities

Browser DevTools for recon