PolyU CTF Qualifier 2025/2026 has ended

Thanks for your participation in the PolyU CTF Qualifier 2025/2026! It has finally ended and we have recruited 10+ members to the team.

This 48-hours long CTF qualifier spans from 03-Oct-2025 (Fri) 18:00 to 05-Oct-2025 (Sun) 18:00, and this year we have flag hoarders!

We have also successfully brought together participants from all around the world to solve challenging cybersecurity problems and showcase their skills. We would like to extend our heartfelt gratitude to all participants for making this event a success. This year is the first year that we had a player exceeding 10K scores, truly great work guys! You have well demonstrated your enthusiasm and dedication in tackling the challenges, and it was truly inspiring!

Let’s re-visit the moments of the qualifier: