Resources

CTF Sites

OverTheWire

Series of games that teach security with practical challenges.

TryHackMe

Learn and practice hacking skills in a safe, gamified environment.

picoCTF

Engaging CTF-style challenges, making learning fun and practical.

Ring Zer0 CTF

A wide variety of different challenges for all skill levels.

HackTheBox

Hands-on challenges from fundamentals to advanced.

CTFtime

Index of public CTF challenges.

Learning/Tools

Hacktricks

Collection of in-depth tutorials on various exploits.

Hacker101

Free online course for ethical hacking and security fundamentals.

Hitchhiker's Guide

An introduction to various online tracking techniques.

CTF 101

CTF Tutorial for absolute beginners.

Cyberchef

A web app for encryption, encoding, compression, and data analysis.

SecTools

Curated list of security tools across different categories.