HALON 2025

About the 2025 HALON Competition

Together with my team, I participated once again this year in Hack All Education in the Netherlands (HALON), organized by SURF. We achieved strong results again: out of 62 verified vulnerabilities, 15 were found by our team, including 4 rated as high or critical severity. Among these vulnerabilities were a Remote Code Execution (RCE) and a 0-day vulnerability in an open-source software suite (name to be disclosed once it can be made public). These findings earned us first place. Proud of the team and of the contribution we’re making to a safer digital education landscape!

HALON 2025 — SURF

Competition Impact

The vulnerabilities identified were responsibly disclosed to the affected parties and contributed to improving the security of critical educational infrastructure.