Quote from SunHyuk

Mr.Radio (mrradio.kr) is a radio frequency (RF) and satellite signal security wargame platform. Players learn RF basics through progressively difficult challenges — from simple modulation to satellite signal decoding. The site provides a custom ground station simulator (Virtual Satellite Antenna) that simulates a real satellite signal receiving environment, allowing players to experience the full flow of satellite hacking from signal acquisition to data extraction.

The site was founded by SunHyuk Hwang, a graduate student in South Korea researching satellite security. There was no existing platform focused specifically on RF signal analysis challenges, so mrradio.kr was built to fill that gap. The goal is to make radio and satellite security hands-on and accessible to anyone with curiosity.

Quote from anna42

Some time ago, I was commissioned to offer a computer science station for an open house day. The target audience was students. I thought back to my childhood and what fascinated me at the time – and it was, above all, the puzzle website hacker.org that transported me to a magical world.

I decided to develop a simplified version for children and teenagers. I called it Hack The Web. I had no idea what kind of response the project would receive. Teachers soon inquired whether they could use Hack The Web in their classes. The number of users increased, and since 2019 I have been continuously further developing the platform.

My goal is for every interested person to be able to engage in hacking successfully for 30 minutes while having fun – even a 7th grader. And perhaps even a professional might discover a few new tricks here and there.

Quote from rekter0

A collection of students, hobbyists and professionals deeply interested in Cyber Security playing CTFs and doing info-sec research.
We are committed to deliver an interesting and most of all a fun learning experience.