Security Library
Think like a defender: how networks work, common weaknesses, and the ethics that come first.
- What Is a Vulnerability?
Why weaknesses exist and how defenders think about them.
- Ports & Protocols
The doors and languages services use to talk (HTTP, TCP, ports).
- How Networks Work
How data travels between machines — packets, addresses, routes.
- The Security Mindset
Thinking like a defender: assume nothing, verify everything.
- Ethical Hacking Ethics
Authorization, disclosure, and doing security work responsibly.