Security researcher and anti-cheat engineer
Stijn van den Dool is a security researcher and anti-cheat engineer working on game security, reverse engineering and detection. He is nineteen, and has spent five of those years inside other people's software.
The current work is defensive: anti-cheat and detection engineering, kernel-level development, machine learning applied to behavioural detection, and the front of the stack that has to carry it — software, frontend, interface and motion design. The offensive history is documented publicly because it is where the instinct came from, not because it is what he sells.
Published work includes Shroud, a correctness-first source-to-source obfuscator for Python, JavaScript and Lua that verifies its own output behaviourally, and a Lua anti-cheat running in production. Everything on stijn.tf is drawn from real repositories; nothing is embellished.
The defensive side is the current work: anti-cheat and detection engineering, kernel-level development, and machine learning applied to behavioural detection. The offensive history is documented on the home page because it is where the instinct came from — a decade of taking other people's software apart is what makes the defensive half worth anything.
Everything below is a real repository. No invented stars, no invented CVEs, no invented clients.
The interactive version of all of this is on the home page. This page exists so that the same facts are readable without JavaScript, by people and by machines that do not run it.