I like how the progression from basic concepts to more advanced topics feels natural. Even complex ideas are easy to understand thanks to the structured learning process. The interactive environments are robust, and you really learn by doing. Furthermore, the platform is beginner-friendly, which makes it accessible for anyone who’s new to the subject.

I like that CMD+CTRL Training takes over all the technical aspects of hosting a competition, so I don't have to worry about tasks, their deployment, registration, the leaderboard, etc. I appreciate that the tasks are well-prepared for a general technical audience, making them easy to understand and not overly complex. The participator's webpage is intuitive and easy to use, with features like restarting a CTF application and checking the leaderboard just a few clicks away. I also love the automatic scoring system where points are credited as soon as a vulnerability is triggered, eliminating the need to enter any flags manually. From a participant's perspective, the initial setup is really easy.

Needed creativity and flexibility to solve. Was easy to start but hard to finish. So challenge for every one.