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War-games can be used to teach the basics of web attacks and web security, giving participants a better understanding of how attackers exploit security vulnerabilities.

HackTheBox Join a dynamically growing hacking community and take your cybersecurity skills to the next level through the most captivating, gamified, hands-on training experience!

Hacker101 CTF The Hacker101 CTF is a game designed to let you learn to hack in a safe, rewarding environment. Hacker101 is a free educational site for hackers, run by HackerOne.

picoCTF picoCTF is a free computer security education program with original content built on a capture-the-flag framework created by security and privacy experts at Carnegie Mellon University.

websec This is a war-game site providing various web-based challenges. It was originally created because we felt that there was a lack of good and non-trivial web challenges available.

PWNABLE Here you will find pwnables for beginners. Most of the challenges were created for an internal event at our ctf team OpenToAll. Eventually I grew fond of the idea of hosting them publicly, so this website was born.

OverTheWire Bandit The Bandit war-game is aimed at absolute beginners. It will teach the basics needed to be able to play other war games. If you notice something essential is missing or have ideas for new levels, please let us know!

Newbie Contest We offer you a series of challenges covering several areas ranging from the exploitation of flaws to crackmes, through stenography, cryptography, programming... and in the most total legality!

Root Me The fast, easy, and affordable way to train your hacking skills.

Blue Team Labs Online A gamified platform for defenders to practice their skills in security investigations and challenges covering; Incident Response, Digital Forensics, Security Operations, Reverse Engineering, and Threat Hunting.

CTF TIME There are a lot of Capture The Flag (CTF) competitions in our days, some of them have excellent tasks, but in most cases they're forgotten just after the CTF finished. We decided to make some kind of CTF archive

OSINT CTF Trace Labs is designed to be a catalyst for improving the state of missing persons location and family reunification. We provide a modern, cost-effective and transparent solution to a problem that is destroying families.

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