Thijs Bosschert
Thijs Bosschert is a technically-strong and creative security professional focused on solving any incident or challenge he comes across. Thijs has been active in the security field since the early 2000s, and has a background in incident response, gamification, red/purple-teaming and penetration testing.
Thijs has been an active CTF player for many years with teams such as Eindbazen, Jobless Hackers, Hack.ERS and Spotless. With those teams he won multiple large CTFs including the Hack in the Box CTFs in Amsterdam. Thijs has been the lead organizer of the CTFs at OHM2013, SHA2017, MCH2022 and WHY2025. Thijs was also the head of the digital detective team at the headquarters of the second and third seasons of the Hunted TV show (2017 & 2018).
Session
The Dutch WHY2025 hacker camp (held in August 2025) contained a lot of activities and entertainment for the attendees. This presentation focuses on two of these activities, namely the CTF (Capture The Flag) and Secret Token Game. These activities entertained a large amount of the visitors, including seasoned hackers, inspired newcomers and even the youngest generation. The goal of the activities was to entertain, learn and train the visitors, but also to inspire the next generation of hackers.