From curious to security researcher
A free, structured path through ethical hacking - deep lessons, hands-on labs, and real HackerOne breach breakdowns. Built like Striver's TUF, but for cybersecurity.
100% free · beginner-friendly · ethics-first
36
Lessons
4
Modules
12
Labs
∞
Free, forever
// why vr4cs
Built to make it actually stick
Structured paths
One clear sequence from zero to researcher. No jumping around, no gaps - depth over breadth.
Hands-on labs
Every concept ends in a safe, legal challenge. You don't learn to hack by reading.
Real breach breakdowns
Disclosed HackerOne reports dissected step by step - and mapped to the skill behind them.
Live playground
An in-browser sandbox to prototype scripts and logic without leaving the page.
// the kill chain you'll master
Think like an attacker
01 Recon
Map the target
02 Exploit
Find the foothold
03 Escalate
User → root
04 Report
Disclose responsibly
// start here
The Fundamentals path
Master the terminal and the network - the two foundations every other security skill is built on. This is where every aspiring hacker should start.
Linux Fundamentals
14 lessons
Live in the terminal like a hacker. From the filesystem to permissions, processes, bash scripting, and the privilege-escalation tricks that win real engagements.
Networking Foundations
3 lessons
You can't attack what you don't understand. IP, TCP/UDP, the handshake, ports, DNS, and HTTP - the plumbing every exploit travels over.
// try it
Curiosity is the first exploit
Poke around a real-feeling Linux shell - no install, no signup. Try: whoami, ip a, ls -la, neofetch, help.
Only hack what you're allowed to
Every technique here is for legal, authorized testing - your own labs, CTFs, and bug-bounty programs. That single discipline is what makes you an ethical hacker.