PortSwigger Web Security Academy
Web Security Training

The PortSwigger Web Security Academy is a free, online training platform covering web application security vulnerabilities, exploitation techniques, and defensive measures.
Key Features
- Comprehensive web security coverage
- Interactive labs and challenges
- OWASP Top 10 and beyond
- Burp Suite integration
- Free and regularly updated
- Practical exploitation techniques
Why I Recommend It
Created by the makers of Burp Suite, this academy provides authoritative, hands-on web security training. The labs are excellent and the content is always up-to-date with current vulnerabilities.