Security is a mindset before it's a skill

Defenders ask "how should this work?" Attackers ask "how can I make it work for me?" That flip — questioning every assumption, every input, every trust boundary — is the whole game. This free course takes you from nothing to your first captured flag, and points you at the deep courses for each specialty.

What you'll leave with

The core vocabulary (vuln vs exploit, CIA, threat model).
Comfort in the lab: a real Linux box in your browser.
A taste of every track — web, network, binary, crypto, defense.
Your first flag, and a clear path to go deeper.

🎯 Challenge: No commands yet — just commit to the mindset. As you read on, for every system you meet, ask: "what does it trust, and what happens if that trust is wrong?"

⚖️ Everything you learn here is for authorized testing only — your own lab, or systems you have written permission to test.

Liked it? 9 more lessons are waiting.

10 lessons · knowledge checks · final exam · verifiable certificate · in-browser Live-Lab

Unlock all courses · CHF 9/month Buy only this course · CHF 19

What's in Cybersecurity Fundamentals

1. Welcome — Think Like an AttackerFree
2. How Mobile Security Lab Works (and why no videos)🔒 Start Here
3. Ethics, Authorization & the Law🔒 Foundations
4. Core Concepts — CIA, Vuln vs Exploit🔒 Foundations
5. Your Lab — First Commands🔒 Hands-On
6. The Command Line, Fast🔒 Hands-On
7. Networking — IPs, Ports & Services🔒 Hands-On
8. The Domains of Hacking🔒 Overview
9. How to Actually Get Good🔒 Overview
10. You’re Ready — Choose Your Path🔒 Certification

Continue in the interactive course reader →

Welcome — Think Like an Attacker

Security is a mindset before it's a skill

What you'll leave with

Liked it? 9 more lessons are waiting.

What's in Cybersecurity Fundamentals