Hands-on security challenges in web, cryptography, forensics, industrial control systems and more, scored on a live scoreboard.
Download your own WireGuard configuration and reach the challenge network from your machine.
Many challenges start as your own private copy, with a flag generated just for you. Stop it when you are done.
Follow your solve timeline, first bloods and points, and see your progress across every challenge category.
The top three on the public scoreboard.