About Cyber Revision

Cyber Revision is a free cybersecurity revision platform. It pairs the theory you need to learn with hands-on practice you can do in the browser. There is no paywall, nothing to install, and you do not need an account to try a challenge.

Why it exists

Most major free cybersecurity materials are from money-hungry corporations that show a glimpse of the content before putting the rest behind a paywall. I wanted somewhere to revise that was accurate, written plainly, and tied back to the standards the field actually uses. So I built it. It's specifically made to be concise and accessible, with a focus on practical application. Every topic is checked against primary sources rather than copied from whatever ranked first, and the content is kept current with OWASP Top 10:2025, NIST CSF 2.0, and MITRE ATT&CK v19.

The approach

A few things set it apart.

• You learn by doing. Challenges are built on real artifacts, like forging a token, cracking a cipher, or reading an auth log, and they are graded instantly using SHA-256 hashing. Hints and walkthroughs are there when you get stuck.
• The writing is plain. Terms are defined the first time they appear, and explanations say what something is and why it matters without padding.
• It stays accurate. Content is written from primary sources and updated as the standards change, not left to drift.

What is here

There is a structured course running module by module from M0 to M10, with notes, flashcards and quizzes for each topic. On top of that there are 19 hands-on challenges, 8 cheat sheets for quick reference, and an 84-term glossary. Each module ends in a practical exam, and passing one earns a free certificate for that module, with 10 practical exams in total.

It suits anyone revising cybersecurity: students, career changers, and people brushing up before an interview or a certification such as CompTIA Security+.

Your privacy

There are no tracking cookies and no ads. The notes, flashcards, quizzes and challenges run in your browser, and that progress is saved on your own device with no login needed. The course offers an optional account so your progress and certificates can follow you across devices, and that is the only part that stores anything about you.

Who maintains it

Cyber Revision is run independently by Jack Ghafari. It has no affiliation with any school, employer, vendor, or certification body. If you spot something wrong or out of date, I would rather know, so please send corrections to jackghx@proton.me.