Cross-Site Scripting from Reflected to DOM-based. BeEF Framework, session hijacking, keyloggers and CSP bypass.
Why this matters right now
XSS — the most common web vulnerability
After the course you will be able to
Not abstract knowledge — concrete skills you can demonstrate in an interview
Real attacks in the course
Every lesson is built on real incidents — not made-up examples
Twitter XSS Worm 2010
The «onmouseover» XSS worm spread through Twitter in minutes, infecting 6 million tweets. Users automatically retweeted malicious content.
British Airways 2018
A payment data skimmer was injected via XSS into the airline's website. Data of 500,000 passengers was stolen, resulting in a $230M fine.
Google $20k for XSS
A researcher found an XSS vulnerability directly on google.com and received a record $20,000 reward through the Bug Bounty program.
Course Program
3 modules · 15 lessons · from basics to BeEF Framework and CSP bypass
Where this course leads
MC-02 — an essential skill for three in-demand cybersecurity specializations
Web Pentester
Test web applications for penetration, find XSS, SQLi and other OWASP Top 10 vulnerabilities.
Bug Bounty Hunter
Find XSS vulnerabilities in major companies and get rewarded. Google pays $20k+.
AppSec Engineer
Embed security into development, implement CSP and other defensive mechanisms.
Who this course is for
Developers
Want to understand how XSS attacks work in practice and how to protect the frontend
Pentesters
Expanding web attack skills and looking for advanced defense bypass techniques
Bug Bounty
Specializing in XSS in bounty programs — a single bug can be worth $20k+
Master XSS Mastery
at a professional level
today
15 lessons, BeEF Framework, Burp Suite and practice on real vulnerable targets.
XSS Mastery
Level: advanced