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Learn cyber security for free

Cyber security is protecting computers, networks and data. These courses cover the foundations employers and certifications (such as CompTIA Security+ and CCNA) expect: how networks work, common attacks and how to defend against them, Linux, encryption and safe, legal practice labs. Everything here is defensive and educational; only test systems you own or have written permission to test.

Cyber security in EnglishBest free cyber security courses, ranked

Our top picks

  1. #1

    CompTIA Security+ SY0-701 Training Course (Professor Messer)

    Complete, exam-aligned Security+ training: the standard first certification.

  2. #2

    Google Cybersecurity Certificate Videos (Grow with Google)

    Google's own introduction to security jobs, tools and practice.

  3. #3

    Free CCNA 200-301 Complete Course (Jeremy's IT Lab)

    Networking first: the foundation every security role builds on.

All 4 courses

Questions

How do I start a career in cyber security?
Learn networking and Linux first, then security fundamentals. An entry certification such as Security+ helps, and many people start in IT support or a security operations (SOC) role.
Is learning ethical hacking legal?
Learning is. Using it on someone else's system without permission is a crime in Pakistan under PECA 2016. Practise only in your own lab or on platforms built for practice.