The word is on the street: the Chaos Computer Club is hosting 40C3 from 27 to 30 December 2026 – Europe’s biggest hacker party, conference and platform for technology, society and civil liberties. We understand the Congress to be a huge shared stage and therefore invite you to help shape it. The Call for Participation for talks, the entertainment programme, art, punk and music opens today.

Everything is getting bigger, more colourful and more beautiful. Following our moving to the Hamburg Exhibition halls, there is once again plenty of space for creative ideas. Obviously, we want to make the …

TL;DR

• 2 ½ day conference around the Fediverse
• talks, workshops, panels, party
• 11–13 September, Berlin

The Fediverse is not one platform – it’s a universe of its own. It contains microblogging and longreads, videoclips and images, podcasts and music and much much more. It is running on a diversity of software, operated by different communities but all connected by open protocols. What holds it together isn’t a company or a business model — it’s a shared idea about how we communicate online and who holds the control of that.

We are convinced that a decentralised and free network is the best …

Moin! The “Nights of Open Knowledge” (NooK) 2026 will take place on 20–⁠21 November at the Audimax (the largest lecture hall) of the University of Lübeck. The Call for Participation for NooK 2026 is now open. You can submit proposals for talks, workshops, stalls, or meetups. Submissions are open until 28 September.

We would be delighted if you could bring topics that fascinate you to the event and share your knowledge and skills. Whether you’ve engaged with a topic through a hobby, a club, at university, at work, or through political activism, we cordially invite you to submit your proposal. …

The CCC Hansestadt Hamburg and the Wau Holland Foundation are hosting the first Digital Independence Days in Hamburg from October 2 to 4, in collaboration with Hamburg neighborhood initiatives, maker and hackerspaces, and other civil society organizations from the region. You can look forward to a program focused on digital independence: messaging apps, office suites, and your own cloud.

tl;dr: From October 2–4, 2026, there will be three days of DIDAYS at the Kultur Palast Harburg. Find all the details at didays.de

Digital Independence

In December 2025, the Digital Independence Day initiative …

tl;dr: The Congress is staying in Hamburg, but is moving from the CCH to the exhibition centre. With the extra space, we aim to reduce overcrowding and support a return to decentralisation. The best way for us to achieve this is if you form tribes and alliances and help us design the new spaces for 40C3.

An Introspection

Having already rocked eight Congresses together at the CCH, we have to face up to a few realities: the Congress has clearly outgrown the building. We can see this in the people who’d love to take part but can’t get a ticket, or – if they’ve managed to get hold of one – can’t …

GPN24 is happening

Thanks to the fantastic support from the community, we are able to organise GPN again this year. We would like to extend our heartfelt thanks to everyone whose donations have made this event possible. You can find the current status of the fundraising campaign at donate.gulas.ch. We have surpassed the €80,000 target, so GPN24 is now confirmed. We will invest any further support in making GPN even better, in future events and in the GPN storage.

All places for the event are already taken through registrations. On the day, we will still be offering a limited number of free day …

The Chaostreff Backnang proudly presents: FSCK 2026 – Episode IV

Overview

Start: 8 May 2026, 16:00
End: 10 May 2026, 18:00
Genre: Hacking & Networking Event
Venue: Kino Universum, Sulzbacher Straße 32, 71522 Backnang (OpenStreetMap)
Admission price: 56 €

Plot

Grab some popcorn and settle into your seat: FSCK Episode IV is coming to the Universum Cinema in Backnang on 8–10 May 2026! Enjoy exciting talks, hang out at the Hackcenter, and find out what goes on behind the scenes at a movie theater. Rumour has it there will also be an exclusive film screening …

You’ll have the chance to hack …

TL;DR

Chaostreff Tübingen e.V. and Friends invite you to the 5th Digital Freedom Days (TDF) under the motto “Encrypting Free Spaces”!

What: 5th Digital Freedom Days
Who: Chaos and Friends
When: 15–17 May 2026
Where: Westspitze, Eisenbahnstraße 1, Tübingen, Germany

What on earth is that?

The Digital Freedom Days are a free conference and a hacking event, They are organised by Chaostreff Tübingen and friends. The Digital Freedom Days are aimed not only at techies, but at anyone with a passion for discovering new things, meeting people and with the desire to live a free and self-determined life …

gpn24.de – Gulasch at the Scale of Chaos

Entropia cordially invites you to the 24th Gulaschprogrammiernacht under the motto “Gulasch at the Scale of Chaos”!

4–7 June 2026
HfG and ZKM, Lorenzstraße 15, 76135 Karlsruhe

TL;DR:

GPN is an open, donation-funded community event where you can hack together, eat goulash, watch lectures, and more. As with the last GPN, registration is required.

€80,000 – Help us reach this fundraising goal. The GPN is made possible primarily by you and your donations. We need every donation (including yours!) to continue celebrating Goulash Programming Night in the …

The Baltic Sea. Family vacations, nudist beaches, fish sandwiches, sand between your toes and seagulls in the air. For many, it’s a relaxing vacation spot; for us, it’s the best location for the saltiest chaos event in Mecklenburg–Western Pomerania!

After the first InselChaos in 2025 impacted like a seagull on a fish sandwich, we have no choice but to repeat the experience in 2026. Or as visitors would say: “There’s already a postcard waiting for you at C3Post for InselChaos 2026, you have no choice but to come!”

InselChaos 2026 will take place on 4–6 September 2026 at La Grange in Bergen on …

TL;DR: A new year – a new Easterhegg. This year it will be happening at the University of Koblenz on 3–6 April. This year’s Easterhegg motto is “The Bunny is a Lie!”

Call for Participation

To make this a really great event, all we need is your submission! If you want to share your expertise, the latest developments in one of your projects, or maybe even something completely different, you can submit your contribution to us until 27 February. We will be happy to set the stage for your contribution.

In general, when submitting your contribution, please ensure that the description and title are …

39C3 is over. Sadly. We hope that your journey home went well and that you had a good return to reality.

Those four days of living a utopia were far too short. There was so much more that one could have experienced, so many more things to discover, so many more people to meet, so many more talks to see … To our own regret, the length of the event can’t really be changed. But many other things can be! That is why we want to ask for your feedback. Let us know what you liked, but also what you didn’t like. We appreciate both praise and constructive suggestions for improvement! But you need to be …