Pwn.college
Pwn.college is a free, open-source cybersecurity education platform developed by Arizona State University that teaches hacking fundamentals through hands-on challenges organized in a progressive "belt" system. The platform is used in university curricula worldwide and is available to anyone globally, with content organized into modules and challenges designed to build core computing and cybersecurity skills from beginner to advanced levels. The creators ask users not to post solutions online to preserve the platform's educational integrity, while also offering educators the ability to integrate the material into their own courses.