BSides Amsterdam CTF

Join our limited-edition, BSides Amsterdam-themed Capture-The-Flag competition!

Created by nerds, for nerds, this CTF will have 15 challenges ranging from beginner to insanely hard. Think you’ve got what it takes to solve ‘em all?

We are also proud and excited to announce SANS as a BSides Amsterdam CTF sponsor! The first place winner receives a SANS course of their choosing.

Prizes

🥇1st place: SANS course of choosing

🥈2nd place: Hack the Box Labs 1 year subscription

🥉3rd place: Picopad DIY video game console

Rules

  1. Individual participation – no teams.

  2. Participation is global, however only in-person attendees are eligible to win prizes.

  3. 18+ attendees only.

  4. No hacking the CTF infrastructure (duh).

  5. No flag hoarding or flag sharing.

  6. No using LLM’s or agentic AI to solve challenges – you will be immediately disqualified if we find out you are doing this.

  7. Space is limited – first come, first serve.

Registration:

If you are attending the conference as well, please make sure to add your ticket number when registering. We have a maximum of 35 in-person spots, so those signing up too late will be put on a waiting list. If a spot opens up for you due to a cancellation or no-show, we can use your ticket number to find you on the conference floor.

Important Information

We have a dedicated CTF area on the upstairs balcony overlooking the main track of the conference. Unfortunately, it is not sound-proof or visually segregated from the rest of the conference. If you are sensitive to stimuli such as noise or light, we recommend you bring noise-cancelling headphones, earplugs, or any other appropriate gear you might need.

There is also a limited number of power plugs. Please come with a charged laptop and bring a powerbank if you have one.

If you have registered but find out you are no longer able to make it, please contact us so we can give your spot to someone on the waiting list.

Please speak to a BSides Amsterdam organizer or email us at ctf@bsidesams.org if you have any accessibility requirements or questions about the competition.