🔐 Cyber With CJ
Cybersecurity • Penetration Testing • Notes • Labs
Welcome to my personal cybersecurity knowledge base. I write what I learn in simple English so I can understand it, practise it, and find it again later.
Learn → Practise → Write it down → Come back later.
🌐 Networking
Protocols, addressing, and the systems that connect everything. Explore →
🐧 Linux
A practical reference for the command line, permissions, and services. Explore →
⚔️ Penetration Testing
A permission-first workflow for assessing security. Explore →
🌍 Web Security
Foundations for understanding and defending web applications. Explore →
🔌 API Security
Notes on designing, testing, and protecting APIs. Explore →
🏢 Active Directory
Core identity and Windows domain concepts. Explore →
A growing, ethical toolkit reference. Explore →
📋 Cheatsheets
Short references for busy brain days. Explore →
🧪 Labs
Notes from authorised learning environments. Explore →
About these notes
This is a work in progress. Each page starts as a placeholder and becomes more useful as I practise, verify, and document it.