Welcome to BrunnerCTF 2026™
Classification: Danish Operations
This is our separate Danish competition, with its own scoreboard and the official BrunnerCTF 2026 prize pool.
At least one team member must have their permanent or primary residence in Denmark, and AI assistance is strictly prohibited. To access this platform, please open a ticket on our Discord.
LOOKING FOR THE GLOBAL COMPETITION? →After last year's tremendous success, our small home-bakery startup has entered a period of extreme exponential growth. With fresh capital from our stakeholders, an increasingly ambitious roadmap, and absolutely no pressure to deliver shareholder value, we are proud to welcome you to Brunnerne Inc.™
"Following extensive market analysis, we have successfully segmented Denmark into its own business unit. But the security team keeps telling me that wasn't what they meant with segmentation." — CISO, Brunnerne Inc.
This is Danish Operations: our local competition for Danish teams, with its own scoreboard, dynamic scoring, and prize pool. Keeping the division separate means international solves with AI allowed do not affect Danish rankings or challenge values.
Participation requires at least one team member whose permanent or primary residence is in Denmark, and the competition operates under a strict no-AI policy. Please read the Rules & AI Policy before starting. If your team is not eligible, or you want to compete using AI, please use the Global competition instead.
Want CTFtime points too? The Danish competition does not award CTFtime points, but you are welcome to also create a team on the Global platform and submit your flags there. All challenge work contributing to your Danish solves must still comply with the Danish no-AI policy.
Whether you are joining as a new intern or an experienced senior consultant, we hope you achieve exceptional returns on your invested weekend. And yes - despite the restructuring, there will still be cake.