What Hackers Yearn
From Wikipedia, the free encyclopedia
| What Hackers Yearn | |
|---|---|
| Genre | Hacker con |
| Begins | August 8, 2025 |
| Ends | August 12, 2025 |
| Frequency | Quadrennial (every 4 years) |
| Locations | Oudkarspel, Netherlands |
| Inaugurated | 1989 |
| Previous event | May Contain Hackers (2022) |
| Next event | Name not yet announced |
| Attendance | 3753 tickets sold |
| Website | https://why2025.org/ |
What Hackers Yearn (WHY2025) was held on August 8-12, 2025 at Geestmerambacht, Oudkarspel (42km north of Amsterdam).[1]
It was a nonprofit outdoor hacker conference and festival in The Netherlands. This conference was part of a sequence of quadrennial hacker camps that began with the Galactic Hacker Party in 1989, followed by Hacking at the End of the Universe in 1993, Hacking In Progress in 1997, Hackers At Large in 2001, What the Hack in 2005, Hacking at Random in 2009, Observe. Hack. Make. in 2013, Still Hacking Anyway in 2017, and May Contain Hackers in 2022.[2]
The camp took place from 8 to 12 august at Geestmerambacht in Oudkarspel. More than 3750 hackers and technology minded people from 50 countries participated in workshops and discussions. During the camp, lectures and workshops were held in conference tents, with over 179 speakers presenting including Dutch Government employees.[3]
The conference had 344 sessions, 176 talks, 104 workshops, and 62 entertainment sessions (music performances, movie watching, etc.). All scheduled talks were live-streamed and recorded, and published online at the streaming Portal of the Chaos Computer Club, at media.ccc.de/c/WHY2025.
Infrastructure
Participants had Gigabit Ethernet through Datenklos (repurposed new chemical toilets with Ethernet switches).[4] A network with 400 GB uplink/downlink provided high-speed network covering the entire camp, with both Public, Encrypted, and Eduroam service. The camp also featured a local DECT phone network, with optional SIP service SIP for app-based calling from modern devices like Android, iPhone, and laptops. Also found on all fields of the camp are the field phones that could be used by those without a DECT or smartphone.
Volunteering

The camp operated an extensive network of volunteering by participants (also called "Angels", using the shift-planning system "Engelsystem",[5] developed by the German computer club Chaos Computer Club. Volunteers were rewarded with free meals for every two hours worked, with 1141 volunteers spending a total of 9477 hours (or 56.4 weeks) in the span of 5 days. Besides all the registered angel hours, many additional volunteers helped with buildup and tear-down.
