// how it works
From "what's a port?" to capturing your first flag.
You don't need to install anything or set up a lab to begin. Sign up, open a room, and you're learning by doing within minutes. Here's the loop.
Pick a path or a room
New to security? Follow a learning path that orders rooms from basics to advanced. Want something specific? Jump straight to any room.
Learn the concept
Each task explains the idea in plain language with original diagrams — the why, not just the command to copy. Beginners can follow every step.
Do the challenge
Then you apply it: inspect a request, exploit a weakness, read some memory. Hands-on practice is what turns "I read about it" into "I can do it."
Capture the flag
Prove you solved it by submitting the flag. Correct answers earn points and unlock the next task — instant feedback, no guesswork.
Track your progress
Your dashboard shows completed rooms, points, badges and rank on the leaderboard. Everything you finish stays yours.
Free vs Pro
Start free — a set of beginner rooms is open to everyone, forever. Upgrade to a Pro pass when you want the full library, the advanced paths, and every challenge.
- Free — beginner rooms, your profile, points and leaderboard.
- Pro pass — the entire room library, advanced & expert paths, all flags.
- Teams — manage seats, assign rooms, and track your group's progress.
Do I need my own lab?
No. Rooms are self-contained — you work through the material and challenges right here. For topics that benefit from local tools, we tell you exactly what to install and how.
Is it really beginner-friendly?
Yes. If you can use a browser, you can start. We assume no prior knowledge and build up from first principles.
Ready to try it?
It takes about thirty seconds to make an account.