Best Places to Learn Cyber Security: 10 Free and Paid Options Compared

The best places to learn cyber security in 2026 depend on two things: how much you can spend and how much setup you can handle. You can now get from zero to job-ready skills for free, using browser labs, free web-security academies and capture-the-flag challenges, and pay only when you want a certification that employers filter for.

We compared ten platforms on cost, how much hands-on practice they offer, what you need to install and which stage of learning they suit. Prices and course details were checked on each provider’s own website on October 27, 2026.

Disclosure: VulnTech News is part of VulnTech, which runs the VulnTech learning platform ranked first below. We placed it first because it is free and needs no setup, which matters most to beginners, and we explain its limits as plainly as anyone else’s. Every other platform here is independent of us, and none paid to be included.

The best places to learn cyber security at a glance

1. VulnTech: free courses with real labs in your browser

VulnTech is built for people who want to practise from the first lesson without fighting with virtual machines, VPN files or tool installs. When you open a lab, a real Linux machine (or a deliberately vulnerable web server, or a network simulator for the networking labs) starts inside the browser tab. You type real commands, read real logs and attack a real target, and the lab checks your work on the machine itself.

Its security and IT courses are free, and each course page says you can start without signing up. A free account saves your progress across devices. The courses and their lab counts, as listed on VulnTech’s course pages:

The Web Pentesting course moves from recon and HTTP basics through SQL injection, cross-site scripting, IDOR, path traversal, SSRF, server-side template injection, XXE, JWT flaws, request smuggling and cache poisoning, and ends with writing a findings report. Each module pairs the attack with a lesson on how to fix it. On the defensive side, SOC Analysis has you work through Linux auth logs, web access logs, Windows events, packet captures and IDS alerts, then triage, correlation, incident response and reporting.

Why it is our top pick for beginners: three things that usually stop newcomers are gone. It costs nothing, there is nothing to install, and every topic ends with practice on a real system rather than a quiz. That also makes it one of the few options that works on a Chromebook, a school or library computer, or a locked-down work laptop. If you want to try it before committing, the free online Linux terminal opens a real Linux shell in your browser.

Where it falls short: VulnTech’s labs are guided and teach one technique at a time. It does not offer large multi-machine corporate networks or Windows Active Directory attack labs, and the bigger platforms below have far more content in total. Once you have the basics, add open-ended challenges from Hack The Box, picoCTF or OverTheWire.

2. PortSwigger Web Security Academy: the deepest free web security training

PortSwigger, the company behind the Burp Suite testing tool, describes its Web Security Academy as “100% free”. It covers 31 topics, from SQL injection (16 labs) and cross-site scripting (30 labs) to newer areas such as web LLM attacks and API testing. PortSwigger says the material is produced by a team led by the author of The Web Application Hacker’s Handbook.

Best for: anyone serious about web application testing or bug bounty hunting. Watch out for: it assumes you understand HTTP and are comfortable with Burp Suite, so complete beginners will get more out of it after a foundation course.

3. TryHackMe: guided rooms with a large community

TryHackMe teaches through short guided “rooms” grouped into learning paths, and says more than 9 million people have joined. The free tier includes introductory rooms, limited access to learning paths and one hour a day of the in-browser AttackBox. Premium, listed from €10.50 a month on an annual plan, adds full beginner paths, a certificate for each path you complete and unlimited AttackBox time. Prices are shown in local currency, so they vary by region.

Best for: beginners who like step-by-step guidance and a sense of progress. Watch out for: many of the most useful paths need Premium.

4. Hack The Box: realistic targets and serious certifications

Hack The Box is known for realistic vulnerable machines that you have to work out without much help, and runs a separate training platform, HTB Academy, with modules, paths and its own certifications, such as the HTB Certified Penetration Testing Specialist and Defensive Security Analyst. Labs run in an in-browser machine called Pwnbox. Under new Academy pricing that took effect on October 12, 2026, a student plan costs $10 a month and the Silver plan $30 a month.

Best for: learners ready to be stuck for a while and work things out. Watch out for: it is a steep start for absolute beginners.

5. OverTheWire: learn Linux by playing

OverTheWire’s Bandit wargame is, in the site’s words, “aimed at absolute beginners”. Each level is a small Linux puzzle reached over SSH, and finding the password unlocks the next level. It is free and builds exactly the command-line fluency that every security role needs.

Best for: testing your Linux skills. Watch out for: it is a set of challenges, not a course, so you will need to look things up elsewhere when you get stuck.

6. picoCTF, now CyLab Security Academy

Carnegie Mellon University’s picoCTF, a capture-the-flag program popular with students, has become CyLab Security Academy, which CMU describes as “the same team, new mission”. It remains a free learning platform, and picoCTF accounts created before May 8, 2026, carry over with their progress. Challenges cover areas such as web exploitation, cryptography, forensics and reverse engineering.

Best for: school and college students, and anyone who enjoys puzzles. Watch out for: like OverTheWire, it is better at testing skills than teaching them from scratch.

7. Cisco Networking Academy: free introductory courses

Cisco Networking Academy offers a free, self-paced Introduction to Cybersecurity course, along with other networking and security courses. Networking knowledge is the foundation of most security work, and Cisco’s material explains it clearly.

Best for: understanding concepts and networking basics. Watch out for: it is a course rather than a lab platform, so pair it with a hands-on platform, such as VulnTech’s CCNA course labs.

8. Professor Messer: free CompTIA Security+ videos

Professor Messer’s Security+ SY0-701 course is 121 videos and just over 15 hours long, and the site says all of its training videos are “completely free”. Course notes and practice exams are sold separately, and the CompTIA exam itself is paid.

Best for: preparing for Security+, a widely recognised entry-level security certification. Watch out for: videos alone will not give you hands-on skill.

9. Google Cybersecurity Professional Certificate

Google’s Cybersecurity Professional Certificate on Coursera needs no prior experience. Coursera estimates six months at seven hours a week, and lists more than 1.6 million people as enrolled. In the US and Canada it costs $49 a month after a seven-day free trial, and the course FAQ says most learners finish for less than $300.

Best for: people who want a structured, recognisable credential to put on a CV. Watch out for: the certificate is paid, and it is broad rather than deep.

10. OffSec PEN-200 (OSCP+): the paid professional benchmark

OffSec’s PEN-200 course prepares students for the OSCP+ exam, a 24-hour proctored test against three standalone machines and an Active Directory set. The course plus one exam attempt starts at $1,749, and the Learn One subscription costs $2,749 a year with two exam attempts. OffSec says the OSCP+ expires three years after it is issued unless renewed, while the OSCP awarded alongside it does not expire.

Best for: people aiming for penetration testing jobs who already have solid fundamentals. Watch out for: it is expensive and not designed for beginners.

What changed in 2026: ISC2’s free CC offer has closed

For several years, ISC2’s One Million Certified in Cybersecurity program gave newcomers free training and a free exam for its entry-level Certified in Cybersecurity (CC) credential. ISC2 says it closed new enrollments on May 20, 2026. People who already hold an unexpired exam code must schedule and take the exam by December 31, 2026. Everyone else now pays $199 for the exam, plus a $50 annual maintenance fee after passing.

How to choose: a free learning path

No single platform does everything best. A path that costs nothing until you choose to pay for a certification:

1. Linux and the command line: work through VulnTech’s Learn Linux course, then test yourself on OverTheWire’s Bandit.
2. Networking: Cisco’s introductory courses for theory, and VulnTech’s CCNA course for hands-on router and switch labs.
3. Pick a direction. For offence, take VulnTech’s Web Pentesting course and then go deeper on each topic in PortSwigger’s Academy. For defence, take SOC Analysis, Blue Team Defense and Network Traffic Analysis.
4. Test yourself on Hack The Box, TryHackMe or CyLab Security Academy challenges.
5. Add a certification when you start applying for jobs: Security+ (with Professor Messer’s free videos) or the Google certificate for entry-level roles, and OSCP+ later for penetration testing.

Whatever you use, practise only on systems built to be attacked or that you have written permission to test. Testing other people’s websites or networks without permission is illegal in most countries.

Free vs paid: is it worth paying to learn cyber security?

You can build most of the practical skills employers look for with free resources alone, especially if you combine a structured course with hands-on labs and challenges. Paying makes sense for two things: certifications that recruiters filter for, and advanced, realistic lab environments once you have outgrown beginner material. Arriving at a paid platform with the fundamentals already done also means you get much more out of the subscription.

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