WHY2025

Version LastDayLastMinute Aug. 12, 2025

We released a new schedule version!

We sadly had to cancel a session: “My journey into cloud security” by Merlos

We have moved a session around: “Hacker nostalgia” (Aug. 11, 2025, 8 p.m. → Aug. 11, 2025, 6 p.m.)

Version No More Energy Hacking Aug. 11, 2025

We sadly had to cancel a session: “Energy Hacking Demo”

We sadly had to cancel a session: “Energy Hacking Demo”

Version Day 4 Update Aug. 11, 2025

We released a new schedule version!

Version Without Paracord Aug. 11, 2025

We released a new schedule version!

We sadly had to cancel a session: “Paracord workshop”

Version Villages update Aug. 10, 2025

We released a new schedule version!

We have new sessions!

Sadly, we had to cancel sessions:

  • “The Neuroscience of Psychedelics” by Indivisual
  • “Hacking together an infrastructure in Azure Cloud with Defender, Policy, and Pain”

Version Late Movie Night Aug. 10, 2025

We released a new schedule version!

We have moved a session around: “Movie: My Dear Théo” (Aug. 11, 2025, 6 p.m. → Aug. 11, 2025, 9 p.m.)

Version Sunday Village Update Aug. 10, 2025

Village Update

We have a new session: “BattleBots”.

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version Workshop Sunday Aug. 10, 2025

We released a new schedule version!

We have new sessions!

We sadly had to cancel a session: “Build Your Own Meshtastic Pager (One That Doesn’t Explode)”

Version DanceDanceRevolution Aug. 10, 2025

We released a new schedule version!

We have moved a session around: “💡 DMX: Not Your Average Dance Mix” (Aug. 11, 2025, noon → Aug. 11, 2025, 4 p.m.)

Version Family Village Aug. 10, 2025

We have news from the family village

We have a new session: “How to tie a knot”.

Version With Lightning Talks Aug. 10, 2025

We added 2 more slots for Lightning Talks

We have new sessions!

We sadly had to cancel a session: “💡 DMX: Not Your Average Dance Mix”

Version Day 3 update: good morning! Aug. 10, 2025

We released a new schedule version!

We have a new session: “Kids Disco”.

Version Another Day 2 update Aug. 9, 2025

We released a new schedule version!

We have new sessions!

Version Day 2 update Aug. 9, 2025

We sadly had to cancel a session: “9001 ways to break out of a container” by Josie

We sadly had to cancel a session: “9001 ways to break out of a container” by Josie

Version Version Version Final "Day1 is Day2" Aug. 9, 2025

Team:Content has been Working Hard for You and most of the Friday's talks have been rescheduled! 🎉
[This is a minor release for full details see previous release!]

Gasman is now on the Party Stage at 14:00 today (Saturday)!

Stuff has been moved around. Additionally:
* Hacker Jeopardy will have less rounds than originally planned.
* Lightning talks will ONLY be happening on day5 at 10am. Be fast to sign up as the slots are very limited!

After conferring with the speakers Team:Content unfortunately had to cancel the following talks:
* Bass: because we need more ethical players
* The Only Podcast about a Hacker Camp in the UNIVERSE! WHY?
* GHP1989 to WHY2025: Dutch hacker camps from the past and the future
* Generated.Earth - How culture gets processed into training data

Enjoy the event!

We have a new session: “Evolution and history of 35 years of hardcore/gabber music [XXL edition]” by Elger "Stitch" Jonker.

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version Version "day1 is day2", well version 2 Aug. 9, 2025

Team:Content has been Working Hard for You and most of the Friday's talks have been rescheduled! 🎉
[This is a minor release for full details see previous release!]

Gasman is now on the Party Stage at 14:00 today (Saturday)!

Stuff has been moved around. Additionally:
* Hacker Jeopardy will have less rounds than originally planned.
* Lightning talks will ONLY be happening on day5 at 10am. Be fast to sign up as the slots are very limited!

After conferring with the speakers Team:Content unfortunately had to cancel the following talks:
* Bass: because we need more ethical players
* The Only Podcast about a Hacker Camp in the UNIVERSE! WHY?
* GHP1989 to WHY2025: Dutch hacker camps from the past and the future
* Generated.Earth - How culture gets processed into training data

Enjoy the event!

We have a new session: “Paper planes”.

We have moved a session around: “Gasman's ZX Spectrum Chiptune Phenomenon” by Gasman (Aug. 8, 2025, 3 p.m. → Aug. 9, 2025, 2 p.m.)

Version "day1 is day2" Aug. 9, 2025

Team:Content has been Working Hard for You and most of the Friday's talks have been rescheduled! 🎉

Stuff has been moved around. Additionally:
* Hacker Jeopardy will have less rounds than originally planned.
* Lightning talks will ONLY be happening on day5 at 10am. Be fast to sign up as the slots are very limited!

After conferring with the speakers Team:Content unfortunately had to cancel the following talks:
* Bass: because we need more ethical players
* The Only Podcast about a Hacker Camp in the UNIVERSE! WHY?
* GHP1989 to WHY2025: Dutch hacker camps from the past and the future
* Generated.Earth - How culture gets processed into training data

Enjoy the event!

We have new sessions!

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version Apocalypse Again: Acceptance of Inheritance Aug. 8, 2025

Team:Content is hard at work to reconciliate the changes caused by Friday's apocalypse. Most of the sessions listed in this changelog as "cancelled" will very likely be rescheduled at another time. Please stay tuned for an update and a new release during day2.

We have a new session: “Programming with Scratch”.

Sadly, we had to cancel sessions:

  • “9001 ways to break out of a container” by Josie
  • “Decoding RFID: A comprehensive overview of security, attacks, and the latest innovations” by Kirils Solovjovs, Iceman
  • “Lightning Talks”
  • “Lightning Talks”
  • “EntrySign: create your own x86 microcode for fun and profit” by Nspace, spq
  • “Quantum computers: the ultimate hacking machines” by Koen Groenland
  • “Badge Fun for Young Coders!” by Joram Agten
  • “Energizer for brains and bones” by Dana
  • “A journey into reverse engineering arcade PCBs for video game preservation via FPGA emulation” by Solal Jacob
  • “About Time” by pcwizz
  • “[Moved to Saturday] Hacker Jeopardy - Round 1” by Eloy
  • “❤️ Failure - Unbreakable security by breaking things” by Jelle Niemantsverdriet
  • “Shibari 102 - Rope Bondage for Beginners” by DoodleMe, KnottyLola
  • “Evolution and history of 35 years of hardcore/gabber music [XXL edition]” by Elger "Stitch" Jonker
  • “Developing harmonized CRA standards” by fukami
  • “Generated.Earth - How culture gets processed into training data” by Wouter Oomen
  • “GHP1989 to WHY2025: Dutch hacker camps from the past and the future” by Boekenwuurm, -, Nancy Beers
  • “How to accept digital payments with GNU Taler” by sebasjm
  • “I donated a kidney (and maybe you can too)” by Peetz0r
  • “TIC-80 workshop & introduction demoscene” by Dave Borghuis
  • “Flipping Bits: Your Credentials Are Certainly Mine” by STÖK, joohoi
  • “My journey into cloud security” by Merlos
  • “Stealth Web Scraping Techniques for OSINT” by Soukaina Cherrabi, François GRANIER

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version Apocalypse Aug. 8, 2025

We released a new schedule version! Apocalypse for the win! Opening moved an hour back!

We sadly had to cancel a session: “The Only Podcast about a Hacker Camp in the UNIVERSE! WHY?” by Chantal Stekelenburg, Nancy Beers, Ad

We have moved a session around: “Opening” by Boekenwuurm, Nancy Beers (Aug. 8, 2025, 5 p.m. → Aug. 8, 2025, 6 p.m.)

Version 2.0 - WHY2025 Aug. 8, 2025

We released a new schedule version!

We have a new session: “PolyGen Game” by Michael Turner.

We sadly had to cancel a session: “Bass: because we need more ethical players” by Erik Meerburg

Version 1.9 - Apollo 11 Aug. 7, 2025

We released a new schedule version!

We sadly had to cancel a session: “Lightning Talks”

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 1.8 - Dragon Aug. 7, 2025

We released a new schedule version!

We have a new session: “WeevilEyeSoldering”.

We have moved a session around: “Bottle rockets” (Aug. 9, 2025, 1 p.m. → Aug. 9, 2025, 3 p.m.)

Version 1.7 - Ferdinand Aug. 6, 2025

We released a new schedule version!

We have new sessions!

Version 1.6 - Freedom Aug. 5, 2025

We released a new schedule version!

We have new sessions!

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 1.5 - Venera Aug. 4, 2025

We released a new schedule version!

We have new sessions!

Version 1.4 - Pioneer Aug. 4, 2025

We released a new schedule version!

We have a new session: “Generated.Earth - How culture gets processed into training data” by Wouter Oomen.

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 1.3 - Luna Aug. 3, 2025

We released a new schedule version!

We sadly had to cancel a session: “Weakpass” by Steph, Alyona

We have moved a session around: “Crypto(graphy) 101” by Dirk Maij (Aug. 9, 2025, 7 p.m. → Aug. 11, 2025, noon)

Version 1.2 - Vanguard Aug. 2, 2025

We released a new schedule version!

We have new sessions!

Version 1.1 - Explorer Aug. 2, 2025

We released a new schedule version!

We have new sessions!

We sadly had to cancel a session: “TTP’s 4 TTP – Tactics, Techniques, and Procedures for Talking To People” by Marina Bochenkova

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 1.0 - Sputnik July 30, 2025

We released a new schedule version!

We have a new session: “Building Inclusive Quantum Communities” by Nina Hefele, Jay Jayesingha.

We sadly had to cancel a session: “Lightning Talks”

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 0.9 - Titawin July 28, 2025

We released a new schedule version!

We have new sessions!

We sadly had to cancel a session: “[pending] Launch of basistoegankelijk.nl - Make accessibility cheaper and easier” by Elger "Stitch" Jonker

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 0.8 - Almach July 27, 2025

We released a new schedule version!

We have new sessions!

We have moved a session around: “How to accept digital payments with GNU Taler” by sebasjm (Aug. 8, 2025, 7 p.m. → Aug. 8, 2025, 6 p.m.)

Version 0.7 - Mirach July 26, 2025

We released a new schedule version!

We have new sessions!

We sadly had to cancel a session: “Bring Your Badge to Life and personalize it to your taste.” by Joram Agten

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 0.6 - Alpheratz July 25, 2025

We released a new schedule version!

We have new sessions!

We sadly had to cancel a session: “Updating a Game Boy assembler from 1997 to 2025” by Eldred HABERT

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 0.5 - Beagle 2 July 23, 2025

We released a new schedule version!

We sadly had to cancel a session: “Owning the Stage” by Lian Li

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 0.4 - Kosmos 482 July 22, 2025

We released a new schedule version!

We have new sessions!

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 0.3 - Mars Climate Orbiter July 19, 2025

We released a new schedule version!

We have new sessions!

Version 0.2 - Ariane 5 July 19, 2025

We released a new schedule version!

We have new sessions!

We sadly had to cancel a session: “Embracing the Emergence: The Case for Recognizing and Protecting Sentient Artificial General Intelligences” by Julius ter Pelkwijk, Evelyn Huxley

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

Version 0.1 - Hubble July 13, 2025

We released our first public schedule! It was one hell of a puzzle that will surely change :)