Create your account and join your class
If your instructor gave you a class code, join the class organization so your progress is visible and you get the right starter access.
Create your account
New to cybersecurity? Start here
No experience needed.
No experience needed.
Just start.
Follow a guided path from your first terminal command to reading real logs and completing beginner labs. Everything runs in your browser, in a safe sandbox that you can reset at any time.
No installation
Safe disposable sandbox
Hints and guided tasks
Reset anytime
Your first path
Follow these steps in order.
Do not jump straight into hard challenges. Build the foundations first, then practise with labs.
Learn the terminal
Start with Linux Fundamentals. You will practise navigation, files, logs, permissions, archives, and your first security habits.
Open Linux FundamentalsBuild confidence with a focused path
Continue with Linux Files & Permissions: short tasks with instant checks, hints, and a private terminal.
Open Linux Files & PermissionsTry your first web lab
Start with Web Basics: Headers & Cookies, IDOR, Trusting the Client, and SQL Injection. Use the hints when you get stuck.
Browse Web Basics labsLearn to read logs
Security work is often investigation. Try Forensics: Triage & Authentication and learn how to follow evidence in real logs.
Open the forensics pathJoin a live class
Learn directly from an instructor in Classroom. Live sessions connect the labs to the topics you are studying this semester.
Explore ClassroomTrack your progress
Your profile, walkthrough progress, lab solves, and class organization report show what you have completed and what to do next.
Open your profileKeep practising every week
Short, regular practice beats one long session. Aim for one walkthrough task or lab per study day, then review your notes.
Browse all walkthroughs
Nothing to install
Open a browser, launch the terminal, and start learning.
Safe to experiment
Each sandbox is disposable. Reset it when you want a clean start.
Clear next step
Tasks are ordered, checked automatically, and include hints.
Built for classes
Instructors can use class organizations, reports, and live Classroom sessions.
Already have a class code?
Join your class organization so your instructor can see your progress and you get the right starter content.
Join your classTeaching this semester?
Use class organizations for join codes and progress reports, and Classroom for live instructor-led sessions. You can align the labs to your weekly syllabus.
Set up a class
Ready to begin?
Start with one walkthrough task today. You do not need to know everything before you begin.