/$$$$$$ /$$
/$$__ $$ | $$
| $$ \__/ /$$ /$$| $$$$$$$ /$$$$$$ /$$$$$$
| $$ | $$ | $$| $$__ $$ /$$__ $$ /$$__ $$
| $$ | $$ | $$| $$ \ $$| $$$$$$$$| $$ \__/
| $$ $$| $$ | $$| $$ | $$| $$_____/| $$
| $$$$$$/| $$$$$$$| $$$$$$$/| $$$$$$$| $$
\______/ \____ $$|_______/ \_______/|__/
/$$ | $$
| $$$$$$/
\______/
/$$$$$$
/$$__ $$
| $$ \ $$ /$$$$$$ /$$$$$$$ /$$$$$$ /$$$$$$$ /$$ /$$ /$$$$$$/$$$$
| $$$$$$$$ /$$__ $$ /$$_____/ |____ $$| $$__ $$| $$ | $$| $$_ $$_ $$
| $$__ $$| $$ \__/| $$ /$$$$$$$| $$ \ $$| $$ | $$| $$ \ $$ \ $$
| $$ | $$| $$ | $$ /$$__ $$| $$ | $$| $$ | $$| $$ | $$ | $$
| $$ | $$| $$ | $$$$$$$| $$$$$$$| $$ | $$| $$$$$$/| $$ | $$ | $$
|__/ |__/|__/ \_______/ \_______/|__/ |__/ \______/ |__/ |__/ |__/
Start your cybersecurity journey here — whether you’re brand new or levelling
up.
125 interactive lessons with real terminals, story-driven challenges, and a Kali Linux playground
with
your own AI hacking mentor in your browser.
125 lessons free forever. No credit card required.
No installs. No setup. No experience needed. Just open your browser and start learning.
New to cybersecurity? Start with a learning path. Already have some skills? Jump straight into a story-driven experience or the Kali Linux playground.
Every lesson runs in a real terminal in your browser. Type real commands, write real code, and see the results instantly — at your own pace.
Apply what you’ve learned in timed challenges, interactive scenarios, and real-world simulations. Compete on leaderboards and track your progress.
Structured routes from complete beginner to confident practitioner. Every lesson is free.
The foundations every cybersecurity professional needs — Linux, networking, hardware, and the fundamentals that underpin everything.
Learn to code from scratch with hands-on interpreters. Write, run, and debug real programs in your browser.
Offensive security techniques — web exploitation, privilege escalation, and penetration testing.
β‘ Super UserStory-driven cybersecurity challenges. Learn skills through real scenarios, not slideshows.
A T-Rex is escaping containment after a power failure. Diagnose the network, fix the firewall rules, and restore the electric fences before the keeper becomes lunch.
A hidden file is buried deep in the system. Navigate the file system, use search tools, and submit the secret code before the clock runs out. Compete on the leaderboard.
A stickman trapped inside the terminal claims to be you. Help them find scattered fragments of their identity and guide them home through the file system.
A digital city has gone dark. Restore it district by district — assign IP addresses, configure subnets, set gateways, and bring the network back online.
In a post-apocalyptic shelter, a damaged computer is the only way to call for help. Identify and assemble hardware components onto a motherboard to send the signal.
Your rocket’s liveness cron job has failed twice. Fix the broken cron, permissions, crashed service, and corrupted logs before the third check triggers self-destruct.
A defence contractor’s website has been compromised by the Weavers hacker group. Investigate the source code, HTTP traffic, cookies, and hidden endpoints to trace the full attack chain.
A coronal mass ejection has crippled the research vessel Meridian. Write a bash script from scratch to restore five critical systems and transmit a distress signal before power runs out.
Get your own sandboxed Kali Linux desktop — full GUI, real tools, vulnerable target machines. Practice penetration testing without installing anything.
ArcanumAI: Nice — three targets to tear apart.
ArcanumAI: Let's start by identifying services.
Try: nmap -sV 10.10.1.20
βββ(kaliγΏcyberarcanum)-[~]
ββ$ nmap -sV 10.10.1.20
PORT STATE SERVICE VERSION
21/tcp open ftp vsftpd 2.3.4
80/tcp open http Apache 2.2.8
ArcanumAI: Oh hell yes — that vsftpd
version is famously backdoored!
Let me show you how to exploit it…
β
All learning content is free, forever. Super Users get unlimited playground time and exclusive content.
Not sure where to begin? Pick a topic that interests you. Each lab is self-contained with guided lessons and hands-on challenges.
File system, permissions, text editing, and shell fundamentals.
The OSI model, TCP/IP, DNS, HTTP, subnetting, and TLS from the ground up.
Variables, loops, functions, classes — with a live interpreter in your browser.
Tables, chains, rules, and real-world filtering scenarios.
Pointers, memory, structs, and the language that powers the kernel.
DOM, async/await, closures, and OOP — the language of the web.
ip, curl, dig, netstat — essential networking commands.
Network diagnostics, TTL, ICMP deep-dive, and troubleshooting.
CPU, RAM, storage, motherboards — every component inside a computer and how they work together.
Create a free account and start your first lab in under a minute. No experience required.
Taking you to your dashboard…