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27 September 2021 | 10.00-17.30 CEST

On Monday 27 September, the municipality of The Hague and cybersecurity company Cybersprint organise the 4th edition of hacking competition: Hâck The Hague. 200 international professional and student hackers get the opportunity to hack the live IT systems, applications and websites of the municipality of The Hague & her suppliers to put their digital security to the test.

Alongside the hacking competition, the public is offered an interactive side programme during the day. In this programme, hackers, experts, suppliers of the municipality, and other relevant organisations will talk about various cybersecurity topics.

Event Setup

  • 200 hackers will be invited to compete. We strive for a mix of both (inter)national professional / experienced and student hackers.
  • New! Teams of 1-4 people.
  • Much bigger scope than previous editions.
  • An interactive side-programme for the public with status updates on the event, interviews with contestants, secret expert talks, a sneak peak in the control room, a live award ceremony, and more!


12 prizes ranging from €500-€2000 available in four different categories:

  • Most Creative Hack
  • Most Advanced Hack
  • Most Impactful Hack
  • New for students! Hâckademic Award.
    Aside from cash, the three winning student-teams in this category will also receive a recommendation letter to boost their careers, signed by our renowned jury members.
  • First-prize winners in every category will receive tickets for the ONE Conference on 28 and 29 September.

Technical details

We’ll be using an online platform which will allow you to communicate with each other and the organisation during the event. The Zerocopter platform will be used to submit vulnerabilities you find during the event.

Do you have any questions regarding the event, or are you interested in #HTH21 for press-related requests, contact us at hackthehague@cybersprint.com.

Do you want to hack the municipality of the hague?

Even though official registration closed, you are still welcome to register for the event.  Your team will be added to the waiting list. In case places become available due to cancellations, we'll send the team captain an email inviting your team to participate in the competition.

Register for HTH21 >>

Information for Schools Information for Students

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View our Hâck The Hague playlist on YouTube for all videos about the event!

Cybersecurity and the
Municipality of The Hague

As the international city of Peace & Justice, cybersecurity remains crucial to the municipality of The Hague. With regular internal and external assessments, we’re constantly working on our digital security. The Responsible Disclosure aims to better protect the city’s residents, companies and systems by mitigating vulnerabilities. People who report such vulnerabilities via the Responsible Disclosure policy are allegeable to receive a reward.

Hâck The Hague helps to map and assess the municipality’s digital footprint, a necessary step in strengthening the cyber-resilience. In addition, it contributes to raising awareness among residents, entrepreneurs and employees about digital security. Hackers discovered 102 vulnerabilities during last year’s edition, most of which have since been resolved.

Hâck The Hague
is Supported by