Helpful resources
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Helpful resources
- Security is a deep field. Here are trustworthy places to read more and to practise safely.
Practise legally and safely
- picoCTF — beginner-friendly "capture the flag" challenges that teach real skills.
- TryHackMe — guided, hands-on rooms for every level.
- Only ever attack systems you own or are given permission to test. Anything else is illegal.
Learn the web risks
- OWASP Top 10 — the ten most common web security mistakes, clearly explained.
- Have I Been Pwned — check whether your email has appeared in a known data breach.
Revise for your exam
- This site's A-Level CS handouts cover Security, Ethics, and Encryption (topics 6, 7, 17).
- The IGCSE CS handouts cover Encryption (2.3) and Cyber security (5.3).
- Open them from the Resources button on this course, and use these lessons as practice.