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13:37
13:37
60min
Check-in

Check-in time for Hackerhotel 2025

Leonardo Da Vinci
13:37
60min
Check-in

Check-in time for Hackerhotel 2025

Rembrandt
13:37
60min
Check-in

Check-in time for Hackerhotel 2025

Willem van Oranje
13:37
60min
Check-in

Check-in time for Hackerhotel 2025

Boardroom
13:37
60min
Check-in

Check-in time for Hackerhotel 2025

Alfred Nobel
13:37
60min
Check-in

Check-in time for Hackerhotel 2025

Albert Einstein
13:37
60min
Check-in

Check-in time for Hackerhotel 2025

Marco Polo
13:37
60min
Check-in

Check-in time for Hackerhotel 2025

Mozart (OTR)
13:37
60min
Check-in

Check-in time for Hackerhotel 2025

Pub
13:37
60min
Check-in

Check-in time for Hackerhotel 2025

Outside
15:00
15:00
120min
Portrait Photography Studio: "Shoot ALL the Hackers!"
Dennis van Zuijlekom

Need a professional portrait photograph taken for your next event, or talk? Or maybe for your upcoming book's cover? Update your Wikipedia page's profile photo? Become a social media influenza? Visit the studio and have your picture taken!

Marco Polo
15:30
15:30
120min
Fun with Bleach
Moem

Decorating T-shirts with bleach is cool and not difficult. We could choose to make stencils; if you carefully cut or clip you get a positive and a negative template, you can use both and the effect is very different.

Workshops
Outside
16:00
16:00
60min
Abacus workshop
Maja

Get to know the workings of an Abacus. Dedication is key. This workshop requires daily attendance.

Workshops
Alfred Nobel
16:00
60min
Crypto 101
Dirk Maij

A short introduction to cryptography, its past, present and future for the not yet fully initiated.

Talks
Willem van Oranje
16:00
60min
Getting a feel for lockpicking (opening up the world of locksport for the visual impaired)
jos

Lockpicking is a sport where you open locks without force and mostly without keys. While doing this activity nothing much can be seen of the actual process. In stead you need to rely on sound and feel (tactile feedback from the lock).
Therefor a lot of people (including us) think a visual impaired person could be rather good at this (as they are more trained to use the "other" senses)
The firsts steps into locksport however are VERY visually heavy (video's, pictures, diagrams) which makes it rather hard for a visual impaired person to get started.
We believe we fixed that now.

Talks
Rembrandt
16:00
60min
OT Cyberchallenges 2
Elborro, Ad

A year later, we are back at the wonderful company Acme where nice people make beautiful things.

This time we will follow up on that and tell you how the company can improve their own maturity and security levels as explained in the standard.

Talks
Leonardo Da Vinci
17:00
17:00
30min
Android Auto (Flitsmeister)
FrankkieNL

How to make an Android App for Android Auto, a demo of the MapLibre sample app, and stories about Flitsmeister.

Talks
Willem van Oranje
17:00
60min
Automating incident response: scalable & fast, within minutes
Zawadi Done, Mattijs

In today's rapidly evolving digital landscape, the increasing frequency and the scale of security incidents pose significant challenges for incident response teams. The traditional approach, rooted in digital forensics, is no longer sufficient nor is it efficient enough. It's time for a shift towards an automated incident response strategy that combines the investigative prowess of a digital detective with a DevOps mindset.

In this talk, we will present how the incident response process of acquiring data, processing data, and analyzing information can be automated. Based on how we have built our incident response lab using open-source software packages developed by Microsoft (AVML), Google (Timesketch, WinPmem), Rapid7 (Velociraptor), Fox-IT (Dissect), Elastic, KROLL (KAPE) and HashiCorp (Terraform, Vault). We will guide you from using tools manually to using these tools automatically and magically. Well not really magically, but we will emphasise the application of a DevOps mindset to the process that most incident responders execute on a daily basis including ourselves, combined with examples that can be put into practice.

Talks
Rembrandt
17:00
60min
Make WHY2025 awesome! - Workshops/sweatshops/Tiny Tasks.
Nancy Beers

You can visit the WHY room all day to help out making the camp AWESOME! We are organising workshops all day, and if you want to do something feasible, you are very welcome to pick up one of the Tiny Tasks.

Workshops
Marco Polo
17:00
60min
Nerding out over silly machines
Frank Breedijk

You've maybee seen the raking robot that got a CEH (Certified Estetisch Harker) certificate, the Telex linked to Twitter/Telegram or the ASCII foto booth. They are all made by me. If this talk gets accepted I will do a deep dive on these three contraptions and what I learned building them.

Talks
Leonardo Da Vinci
18:00
18:00
60min
Early Dinner
Leonardo Da Vinci
18:00
60min
Early Dinner
Rembrandt
18:00
60min
Early Dinner
Willem van Oranje
18:00
60min
Early Dinner
Boardroom
18:00
60min
Early Dinner
Alfred Nobel
18:00
60min
Early Dinner
Albert Einstein
18:00
60min
Early Dinner
Marco Polo
18:00
60min
Early Dinner
Mozart (OTR)
19:15
19:15
60min
Late Dinner
Leonardo Da Vinci
19:15
60min
Late Dinner
Rembrandt
19:15
60min
Late Dinner
Willem van Oranje
19:15
60min
Late Dinner
Boardroom
19:15
60min
Late Dinner
Alfred Nobel
19:15
60min
Late Dinner
Albert Einstein
19:15
60min
Late Dinner
Marco Polo
19:15
60min
Later Dinner
Mozart (OTR)
20:30
20:30
60min
Openingstalk Hackerhotel 2025
Dimitri

Openingstalk by Dimitri opening Hackerhotel 2025

Talks
Leonardo Da Vinci
21:30
21:30
60min
Surprise keynote

surprise surprise surprise surprise surprise

Talks
Leonardo Da Vinci
22:30
22:30
60min
De validatiecrisis
Brenno de Winter

De opkomst van geavanceerde technologie en kunstmatige intelligentie heeft ongekende mogelijkheden gecreëerd, maar ook een sluimerend probleem blootgelegd: de validatiecrisis. In deze lezing neemt Brenno de Winter, gerenommeerd cybersecurity-expert en auteur van De Validatiecrisis, u mee in de wereld van misleidende aannames, ongeteste technologie, en de gevaren van een gebrek aan kritische evaluatie. Hij toont aan hoe deze crisis niet alleen technologie, maar ook maatschappelijke besluitvorming ondermijnt.

Een belangrijk deel van de lezing is gewijd aan de MIAUW-methodiek (Methodiek voor Informatiebeveiligingsonderzoek met Auditwaarde). Dit gestructureerde framework biedt een oplossing voor de validatiecrisis in informatiebeveiliging door de nadruk te leggen op reproduceerbaarheid, transparantie en auditwaarde. MIAUW stelt organisaties in staat om kwetsbaarheden niet alleen te identificeren, maar ook te documenteren op een manier die zowel controleerbaar als bruikbaar is voor bredere compliance- en risicomanagementstrategieën.

Tijdens de lezing bespreekt Brenno de Winter praktische voorbeelden, biedt hij concrete handvatten om kritisch denken te bevorderen, en illustreert hij hoe MIAUW organisaties kan helpen de kloof tussen complexe technologie en verantwoorde toepassing te overbruggen.

Talks
Leonardo Da Vinci
23:30
23:30
60min
DJ Ze Foxx
Ze Foxx

Party-time ! Party-time ! Party-time !

Talks
Pub
23:30
60min
Workshop fire breathing
Chris van 't Hof, Frank Breedijk

Learn how to breathe fire with Frank and Chris. Frank/Chris will explain the techniques and then we will practise. Ofcourse this will be outside the hotel , around the back/side of hotel on the grass.

Workshops
Outside
08:00
08:00
60min
Early Breakfast
Leonardo Da Vinci
08:00
60min
Early Breakfast
Rembrandt
08:00
60min
Early Breakfast
Willem van Oranje
08:00
60min
Early Breakfast
Boardroom
08:00
60min
Early Breakfast
Alfred Nobel
08:00
60min
Early Breakfast
Albert Einstein
08:00
60min
Early Breakfast
Marco Polo
08:00
60min
Early Breakfast
Mozart (OTR)
09:30
09:30
60min
Late Breakfast
Leonardo Da Vinci
09:30
60min
Late Breakfast
Rembrandt
09:30
60min
Late Breakfast
Willem van Oranje
09:30
60min
Late Breakfast
Boardroom
09:30
60min
Late Breakfast
Alfred Nobel
09:30
60min
Late Breakfast
Albert Einstein
09:30
60min
Late Breakfast
Marco Polo
09:30
60min
Late Breakfast
Mozart (OTR)
10:00
10:00
60min
Hacking with screenreaders as tool or utility
Peter op 't Hof

How to use screenreaders to scan the operatingsystem, building blocks of an application or web-enviroment.

Talks
Willem van Oranje
10:00
60min
Workshop loosing weight
Jeroen Baten

I have been struggling with my weight for over 25 years. After reading the book : The Obesity Code" everything clicked. Since I have lost 13 kg within 6 months. The great thing about this is that it is effortless.

In this workshop we start with the theory of gaining and loosing weight. After that we are going to look at recipes for individual participants. What works, what doesn't.

In the end you will know what should work for you, and how you can loose weight effortlessly.

Workshops
Rembrandt
10:30
10:30
90min
Make WHY2025 awesome! - Workshops/sweatshops/Tiny Tasks.
Nancy Beers

You can visit the WHY room all day to help out making the camp AWESOME! We are organising workshops all day, and if you want to do something feasible, you are very welcome to pick up one of the Tiny Tasks.

Workshops
Marco Polo
11:00
11:00
45min
A (small) history-lesson on ransomware, modern-day tactics and suprising data-recovery options
Mischa Rick van Geelen

Ransomware attacks can feel like a dead end when it comes to data recovery, but not every case requires paying the ransom. In this talk, I’ll share real stories of successful recoveries achieved through attacker mistakes, overlooked system settings, and a strange, unintended effect we discovered and turned into a recovery technique. This method still works because many ransomware groups repeat the same error, and I’ll share it under TLP:RED to prevent attackers from becoming aware and adjusting their tactics. Learn how quick thinking and unexpected opportunities can make recovery possible even in the most challenging cases.

TLP:RED
Boardroom
11:00
60min
Abacus - about the new software for the Dutch Elections
Niels Hatzmann

The Election Council is working on Abacus, the tabulation software for the elections. Come to this workshop to try your hands on the software in a production-like setting and learn more about the choices and concepts behind it.

Workshops
Willem van Oranje
11:00
45min
AiTM: Lessons Learned
Rik van Duijn, Wesley Neelen

"AiTM: Lessons Learned" dives into the evolving threat of AiTM attacks. Our presentation highlights the transition from basic phishing tactics to sophisticated methods that compromise organizational security. The presentation outlines the journey from oldschool phishing attacks, to phishing framework like UADMIN, and the introduction of tools like Evilginx. And now the SaaS providers allowing anyone to buy access to an AiTM platform.

Talks
Leonardo Da Vinci
11:00
60min
I love historical computing. to the moon and back
Jeroen Baten

This talk describes the computer and its interfaces the DSKY (DiSplay-KeYboard) on board the Apollo missions that got us to the moon and back.

I will point out several modern sources of information about this historical project and how it entertains lots of people to this day, including several emulation projects.

Talks
Rembrandt
12:00
12:00
60min
Early Lunch
Leonardo Da Vinci
12:00
60min
Early Lunch
Rembrandt
12:00
60min
Early Lunch
Willem van Oranje
12:00
60min
Early Lunch
Boardroom
12:00
60min
Early Lunch
Alfred Nobel
12:00
60min
Early Lunch
Albert Einstein
12:00
60min
Early Lunch
Marco Polo
12:00
60min
Early Lunch
Mozart (OTR)
13:00
13:00
30min
Don’t judge a vulnerability by its CVSS score
stefan lambregts

The total number of vulnerabilities continues to rise. If we had to rely on just CVSS for prioritizing those vulnerabilities, we have an enormous hard time to remediate all of them. In this talk, we’ll explore the critical gaps in CVSS-based prioritization and discuss why factors like exploitability, asset criticality, and real-time threat intelligence are way more important. Expect real-world examples, a touch of humor, and actionable insights to help you move beyond the CVSS score and toward a smarter, risk-based approach to vulnerability management.

Because let’s face it: a CVSS 7 can be way more critical to your organization then a CVSS 9!

Talks
Leonardo Da Vinci
13:00
30min
How to do vulnerability disclosure in Japan
Chris van 't Hof

With the support of the Dutch embassy in Tokyo, I have researched Coordinated Vulnerability Disclosure (CVD) in Japan for DIVD. Japan’s governmental policy on CVD dates back to 2004. Although Japanese criminal law and jurisprudence do not allow for large-scale intrusive vulnerability research and disclosure, Japanese institutes help citizens disclose zero days to vendors and report vulnerabilities to website operators. Also, the Nation Institute for Information Communication Technology scans and notifies vulnerable IoT, and the Japanese government has adjusted laws to allow this.

Talks
Willem van Oranje
13:00
30min
Prepping for camp or crisis
Anne Jan Brouwer

With more than 30 years of active camping experience and two trips to Ukraine under my belt I would like to share a bit of experience in preparing for the expected and unexpected.

Talks
Rembrandt
13:30
13:30
60min
Late Lunch
Leonardo Da Vinci
13:30
60min
Late Lunch
Rembrandt
13:30
60min
Late Lunch
Willem van Oranje
13:30
60min
Late Lunch
Boardroom
13:30
60min
Late Lunch
Alfred Nobel
13:30
60min
Late Lunch
Albert Einstein
13:30
60min
Late Lunch
Marco Polo
13:30
60min
Late Lunch
Mozart (OTR)
14:00
14:00
120min
Portrait Photography Studio: "Shoot ALL the Hackers!"
Dennis van Zuijlekom

Need a professional portrait photograph taken for your next event, or talk? Or maybe for your upcoming book's cover? Update your Wikipedia page's profile photo? Become a social media influenza? Visit the studio and have your picture taken!

Marco Polo
14:30
14:30
60min
Balloon folding (for kids and adults)
Frank Breedijk

You know those people that take a balloon, inflate it and after some twisting, turning, and some squicky noises they end up with a balloon creature that makes kids really happy?

You could be one!

Because, baloon folding isn't that hard, actually.

I have the balloons, instructions and will actually try to teach during this workshop as well.

Are you an adult and know how to do this, I could sure use some help to survive the chaos ;)

Laguages spoke: Dutch, English
Spoken poorly: German
Barely spoken: French

Workshops
Pub
14:30
90min
Dutch Fun! (damentals)
Dina Tuinhof

This workshop is especially for all attendants who are not Dutch natives. In an exact and logical manner I will guide you through the syntax and semantics of the Dutch language, from sounds (the famous 'ggh' and vowel inventory) to gender of nouns and word order. There will be simple illustrations to help you get a grip on the language and bluff your way into pub talk with locals. Please bring pen and paper for the old school school experience!

Workshops
Willem van Oranje
14:30
120min
Magic Gemstone Jewellery
Moem

Back by popular demand: LED jewellery made from epoxy resin! We will be making brooches this time.

Workshops
Alfred Nobel
15:00
15:00
60min
Aid to Ukraine - what can we do to help?
Niels Hatzmann

Since the start of the war, our community has risen to help friends in Ukraine in many different ways. Roman Kniaziev is coming over from Kharkiv to explain how he works with all the volunteers of ETOC to support his country. Even though the news can be overwhelming, everyone can help. This talk shows you how.

Talks
Leonardo Da Vinci
15:00
60min
Basisbeveiliging / Internet Cleanup Foundation - State of the map 2024
Elger "Stitch" Jonker

The internet cleanup foundation publishes the baseline security of 150.000 domains of 10.000 important organizations in the Netherlands. This talk shows what we've done in 2024 and highlights some of the nice things to come in 2025 maybe spoiling one or two things :) - It had a ton of impact and large banks, internet providers and all kinds of other institutions cleaned up their baseline security issues.

Talks
Rembrandt
16:00
16:00
120min
Make WHY2025 awesome! - Workshops/sweatshops/Tiny Tasks.
Nancy Beers

You can visit the WHY room all day to help out making the camp AWESOME! We are organising workshops all day, and if you want to do something feasible, you are very welcome to pick up one of the Tiny Tasks.

Workshops
Marco Polo
16:00
60min
Meshtastic Fantastic
Elborro

Meshtastic and LoRa, what is it and what can you do with it?

Talks
Willem van Oranje
16:00
45min
Tanmatsu/WHY2025 badge PCB design
Renze Nicolai, Paul Honig

This talk delves into the technical aspects of the Tanmatsu hardware design, the latest creation by the badge team, set to be released alongside the availability of ESP32-P4 chips. It will also form the foundation for the WHY2025 badge. Topics include an exploration of the PCB's high-level design, cost considerations for producing 4000 units, challenges and insights from working with pre-release chip prototypes, and a discussion on the practical aspects of MIPI DSI/SCI interfaces, including LVDS and impedance. The session will share both the hurdles and triumphs encountered during the design process.

Talks
Leonardo Da Vinci
16:00
45min
Van de GHP tot why2025: De geschiedenis en toekomst van de nederlandse hackercamps
Boekenwuurm

De geschiedenis en toekomst van de nederlandse hackercamps

Talks
Rembrandt
16:00
45min
What's that CubeSat Satellite stuff anyhow?
Wouter

CubeSats are small satellites comprised of 10x10x10cm "units" and range in size from very small 1U or smaller PocketQubes to 24U beasts. What can you do with such a platform and why?

Talks
Boardroom
17:00
17:00
60min
Abacus workshop
Maja

Get to know the workings of an Abacus. Dedication is key. This workshop requires daily attendance.

Workshops
Alfred Nobel
17:00
60min
Don't Trust Us
Fleur van Leusden

In The Netherlands, everyone can trust the outcome of elections. That is our mission as The Dutch electoral council.

But you don't have to trust us to be able to trust the outcome of elections. Anyone can verify the results and in this presentation, we aim to explain to you which security measures have been taken in the election process here in The Netherlands to make sure you can trust the outcome of our elections, without having to trust us.

Talks
Leonardo Da Vinci
17:00
60min
Get started with Meshtastic
Elborro

Explore the world of LoRa and Meshtastic in this hands-on workshop! Build your own Meshtastic device in the hacker room to experiment and play with your fellow hackers during the event.

Workshops
Willem van Oranje
17:00
60min
My stairs use 6 IP Addresses and run JavaScript
SchizoDuckie

I spent the past 6 years restoring and upgrading the 2 flights of stairs in my almost 100 years old house in my off time, taking into them into the 21st century while I was at it. The result is a standalone extensible system that supports an unlimited number of sensors and can light up to 256 cheap LED strips on a setup that can run completely off of a simple USB power bank for days and costs under about €40 in parts.

Talks
Rembrandt
18:00
18:00
60min
Early Dinner
Leonardo Da Vinci
18:00
60min
Early Dinner
Rembrandt
18:00
60min
Early Dinner
Willem van Oranje
18:00
60min
Early Dinner
Boardroom
18:00
60min
Early Dinner
Alfred Nobel
18:00
60min
Early Dinner
Albert Einstein
18:00
60min
Early Dinner
Marco Polo
18:00
60min
Early Dinner
Mozart (OTR)
19:15
19:15
60min
Late Dinner
Leonardo Da Vinci
19:15
60min
Late Dinner
Rembrandt
19:15
60min
Late Dinner
Willem van Oranje
19:15
60min
Late Dinner
Boardroom
19:15
60min
Late Dinner
Alfred Nobel
19:15
60min
Late Dinner
Albert Einstein
19:15
60min
Late Dinner
Marco Polo
19:15
60min
Late Dinner
Mozart (OTR)
20:30
20:30
45min
Frank talks AI, keynote style
Frank Breedijk

Frank talks about AI, why it all of a sudden is everywhere and what it means.

Talks
Leonardo Da Vinci
21:30
21:30
60min
Evolution and history of 33.333 years of Hardcore Music
Elger "Stitch" Jonker

The summary that's fun for both outsiders and insiders of this gem of a genre. Talk is in Dutch :)

Talks
Leonardo Da Vinci
22:30
22:30
30min
Wat is data
Lord BugBlue

Sociale constructen gebruikt in software context en alles wat daar entertainment mee maakt :)

Een interactieve presentatie over waarom beperkingen op je dataset zetten onhandig is.

Talks
Leonardo Da Vinci
23:00
23:00
90min
The pubquiz!
Boekenwuurm

In the pub, there is the one and only hacker hotel pubquiz!

Pub
00:00
00:00
90min
Whisky Tasting

Whisky Tasting by RedTeam Cyber Security B.V.

Boardroom
00:30
00:30
60min
DJ Ze Foxx
Ze Foxx

Party-time ! Party-time ! Party-time !

Talks
Pub
08:00
08:00
60min
Early Breakfast
Leonardo Da Vinci
08:00
60min
Early Breakfast
Rembrandt
08:00
60min
Early Breakfast
Willem van Oranje
08:00
60min
Early Breakfast
Boardroom
08:00
60min
Early Breakfast
Alfred Nobel
08:00
60min
Early Breakfast
Albert Einstein
08:00
60min
Early Breakfast
Marco Polo
08:00
60min
Early Breakfast
Mozart (OTR)
09:30
09:30
60min
Late Breakfast
Leonardo Da Vinci
09:30
60min
Late Breakfast
Rembrandt
09:30
60min
Late Breakfast
Willem van Oranje
09:30
60min
Late Breakfast
Boardroom
09:30
60min
Late Breakfast
Alfred Nobel
09:30
60min
Late Breakfast
Albert Einstein
09:30
60min
Late Breakfast
Marco Polo
09:30
60min
Late Breakfast
Mozart (OTR)
10:30
10:30
90min
Make WHY2025 awesome! - Workshops/sweatshops/Tiny Tasks.
Nancy Beers

You can visit the WHY room all day to help out making the camp AWESOME! We are organising workshops all day, and if you want to do something feasible, you are very welcome to pick up one of the Tiny Tasks.

Workshops
Marco Polo
11:00
11:00
60min
A criminal, and victim view of phishing and phishing panels, live of stage.
Karl Lovink

The Dutch Tax and Customs Administration deals with criminals claiming to be representatives of the organization and contacting the public with phishing emails daily. In this presentation, we will take you into the world of the criminals sending phishing emails and the recipients of the phishing mail. A live phishing demo is included.

Talks
Leonardo Da Vinci
11:00
60min
Hacking the international travel system
Anne Ogborn

It's one thing to plan a vacation trip to Cancun if you have a Dutch passport. It's entirely another to find a way to safety if you have an Egyptian passport.

Talks
Willem van Oranje
11:00
60min
How do models like ChatGPT (LLM) work, can you hack them and run them offline?
Anykey

What is an LLM? Can you run it yourself? Can you hack it?

This session will explain high-level how an LLM works, how you can run this yourself (maybe for privacy reasons), Coding with LLMs and the hacking possibilities of these AI systems. Expect many demos and hopefully useful tips and tricks, so you can directly try all this stuff out yourself.

Keyword: Supervised Learning and Reenforced Learning, Hugging Face, Quantization, Ollama, open-webui, Prompt Hacking, Tokens, Context Length

Talks
Rembrandt
12:00
12:00
60min
Early Lunch
Leonardo Da Vinci
12:00
60min
Early Lunch
Rembrandt
12:00
60min
Early Lunch
Willem van Oranje
12:00
60min
Early Lunch
Boardroom
12:00
60min
Early Lunch
Alfred Nobel
12:00
60min
Early Lunch
Albert Einstein
12:00
60min
Early Lunch
Marco Polo
12:00
60min
Early Lunch
Mozart (OTR)
13:00
13:00
30min
Abacus workshop
Maja

Get to know the workings of an Abacus. Dedication is key. This workshop requires daily attendance.

Workshops
Alfred Nobel
13:00
30min
Build your own parametric speaker
Orange_Murker

In this talk I will show you what is involved in making a low-cost directional speaker

Talks
Rembrandt
13:00
60min
The "O" in OT
Jean-Paul Sablerolle

Operational Technology (OT) is vital for industrial processes, yet strategic understanding of OT’s security complexity is often lacking at the executive level. This presentation emphasizes the need for organizations to approach OT as a strategic priority, highlighting its unique challenges—such as legacy systems and non-negotiable uptime—amid rising cyber threats targeting critical infrastructure. By fostering executive insight into OT management, organizations can improve resilience, enhance security, and gain a competitive edge, ultimately positioning OT as an asset in operational stability and corporate strategy.

Talks
Willem van Oranje
13:30
13:30
60min
Late Lunch
Leonardo Da Vinci
13:30
60min
Late Lunch
Rembrandt
13:30
60min
Late Lunch
Willem van Oranje
13:30
60min
Late Lunch
Boardroom
13:30
60min
Late Lunch
Alfred Nobel
13:30
60min
Late Lunch
Albert Einstein
13:30
60min
Late Lunch
Marco Polo
13:30
60min
Late Lunch
Mozart (OTR)
14:00
14:00
120min
Portrait Photography Studio: "Shoot ALL the Hackers!"
Dennis van Zuijlekom

Need a professional portrait photograph taken for your next event, or talk? Or maybe for your upcoming book's cover? Update your Wikipedia page's profile photo? Become a social media influenza? Visit the studio and have your picture taken!

Marco Polo
14:30
14:30
60min
A Communication’s Guide To The Hackerscene
Marieke, Roxane

Wat je als 𝘏𝘰𝘮𝘰 𝘊𝘺𝘣𝘦𝘳𝘯𝘦𝘵𝘪𝘤𝘶𝘴 altijd al hebt willen weten: hoe krijg je het voor elkaar dat de 𝘏𝘰𝘮𝘰 𝘖𝘳𝘥𝘪𝘯𝘢𝘳𝘪𝘶s (= niet hackende mens) ein-de-lijk het belang van jouw werk inziet en een beetje meewerkt.

Talks
Rembrandt
14:30
90min
Operation Check Mate: De Rechtszaak
Brenno de Winter

Tijdens Hacker Hotel krijg je de unieke kans om deel te nemen aan Operation Check Mate, een meeslepende interactieve ervaring waarin je zelf in de schoenen van een rechercheur staat. Deze game is ontwikkeld door experts uit het veld en biedt een fascinerende inkijk in de wereld van strafrechtelijk onderzoek.

Talks
Leonardo Da Vinci
14:30
50min
Thermonuclear Fusion: Controlling the Power of the Stars for a Sustainable Future
Richard Kraaijenhagen

Nuclear fusion promises a clean, safe, and abundant source of power by harnessing the energy released when hydrogen nuclei fuse. This talk will introduce the physics behind fusion, examine large-scale experimental projects like ITER, and explore new methods—ranging from diagnostics to machine-learning-based control—aimed at achieving stable, high-energy-output plasmas.

Talks
Willem van Oranje
15:30
15:30
60min
Helpful hackers preventing evil hackers from crashing the grid
Chris van 't Hof

The European electricity network has become a ‘smart grid.’ This offers many opportunities for sustainability but also makes our energy system more vulnerable to digital attacks. In a time of increasing threat of hybrid warfare, the government and the energy sector realize that we as a society must prepare for possible disruption of the energy system and do everything we can to prevent it.

Various institutions test smart devices, set safety standards, and monitor compliance with these standards. However, parties such as our grid operators only have control over the energy grid equipment up to the front door. They are not allowed to look beyond the electricity meter, where most smart equipment is located. DIVD is allowed to do this and by identifying devices that can form a botnet, DIVD helps to make the smart grid more secure.

DIVD has been conducting research into vulnerabilities in equipment of the energy system, such as charging stations, solar panel inverters, home batteries, and (Home) Energy Management Systems. Previous findings have led to several parliamentary questions and follow-up actions by authorities such as RDI, the Dutch Authority on Digital Infrastructure. With the CVD in the Energy Sector project, DIVD will set up a research and education line with the DIVD.academy in collaboration with the energy sector to reduce the digital vulnerability of our energy system. DIVD will also build a hardware lab to test devices and scenarios. You may join too and help to save the grid.

In this talk, we will demonstrate how we could have generated outages using zero-days we found in solar converters and electric car chargers. But we also did it with just one user-password combination…

Talks
Rembrandt
15:30
45min
How to become your own ISP
Nick Bouwhuis

This talk will take you along with a deep dive on how the internet works at its core and how you can participate yourself. You'll learn all about BGP, AS- numbers, IP-prefixes and more.

Talks
Willem van Oranje
16:00
16:00
30min
Hackerhotel Badge talk

Our workflow, challenges and other fun things

Talks
Leonardo Da Vinci
16:30
16:30
60min
Closing Hackerhotel 2025
Dimitri

Closing talk of Hackerhotel 2025 with NFIR CTF award ceremony.

Talks
Leonardo Da Vinci
20:30
20:30
60min
Late Leave Dinner
Leonardo Da Vinci
20:30
60min
Late Leave Dinner
Rembrandt
20:30
60min
Late Leave Dinner
Willem van Oranje
20:30
60min
Late Leave Dinner
Boardroom
20:30
60min
Late Leave Dinner
Alfred Nobel
20:30
60min
Late Leave Dinner
Albert Einstein
20:30
60min
Late Leave Dinner
Marco Polo
20:30
60min
Late Leave Dinner
Mozart (OTR)