After the halfnarp is before the schedule. Thanks to you, and thanks to the many helping hands of the content teams, we can now present to you the first version of the 39C3 Fahrplan!

The official stage programme at the 39th Chaos Communication Congress starts on 27 December, 10:30 with the opening ceremony and shines with a total of 165 talks. These have been lovingly sorted and curated for you into seven topical tracks. There is definitely something for everyone!

To those of you who now have counted manually or even found the gaps in the schedule: That’s right, because we have a few surprise …

Hinweise für Mithelfende und Veranstalter am Ende des Textes!

Junghacker:innen-Tag - sei dabei!

Zu unserer Freude haben sich in den letzten Jahren immer mehr Junghacker:innen auf dem Congress eingefunden. Daher bieten wir auch diesmal, wie schon in den Vorjahren, einen speziell auf Kinder und Jugendliche zugeschnittenen Junghacker:innentag an. Am zweiten Congresstag, dem 28. Dezember 2025, organisieren Freiwillige aus vielen Assemblies von etwa 10 bis 17 Uhr ein vielseitiges Workshop-Programm für angehende Hacker:innen.

Wer schon immer mal löten, programmieren, einen 3D-Drucker ausprobieren, …

TL;DR

What has changed, in short: In response to the very clear reactions to the exception, the project “Creature ChroniCles” will now be governed by the photo policy in its familiar form. Before every photo, everyone involved will be asked for their consent.

Creature ChroniCles reloaded

In the pre-Congress stress, some things and details unfortunately get lost that seem natural for the people involved, while for others they are far from clear and unambiguous. That did happen to us with the blog article on the “Creature ChroniCles” project. We were too much trapped in our inside view. Most of …

Planning for Congress, unsure what to do there, interested in applying your impressive language skills? If you are multilingual and fluent in German, English and maybe other languages, please consider joining the interpreters team, c3lingo.

We interpret ALL talks in the four main halls live and in real-time. German talks are interpreted into English, and vice versa. Our work is streamed to the Internet and transmitted as audio-only streams in the halls, and recordings are published on media.ccc.de. We have another channel where we interpret into more languages, this is transmitted and …

39C3 needs your help! No Congress would be possible without the many volunteers, called Angels (German: Engel).

Whether you’re participating for the first time or have already experienced many cycles, helping as an Angel is always a great way to meet new beings, get a look behind the scenes, and create unforgettable experiences for yourself and others.

If you’d like to help, register in the Engelsystem. After your arrival at Congress, come to the Angel registration on the right side of the entrance hall. There you’ll receive your Angel badge and can then freely sign up for shifts for upcoming …

Update

There is an update to this post available.

Original

This year at 39C3, there will be photos of the Congress with hand-drawn figures. All persons will be digitally overdrawn and thus anonymized. This is an exception to the photo policy. “Creature ChroniCles” is an artistic pictorial documentation of Congress events. Graphic designer Stella (known for her Congress designs for 33C3 and 35C3 and for Camp23) will take photos of interesting scenes and nice interactions/installations throughout the entire duration of 39C3 and then anonymize all persons represented in the photos by painting …

Once again, the Haecksen will be enhancing the Congress programme with a workshop room! The Haecksen are a group of FLINTA people with an interest in technology, aiming to promote intersectional feminist perspectives within the hacker scene and STEM professions. The Call for Participation for the Haecksen workshop programme is already live. Now is the time to submit your concepts for workshops, discussion groups or evening events.

Especially FLINTA persons and marginalised beings are invited to submit their workshop ideas. For your inspiration, here are the four tracks:

• Diversity & …

Once again this year, the Chaos Mentors are joining the Chaos Communication Congress in Hamburg!

Interested mentors and mentees can register on our Chaos Mentors platform until 25 November 2025, 23:59 UTC+1.

We’re excited to meet lots of new people who want to experience the colorful, fascinating chaos for the first time, maybe that includes you!

If you’re looking for a bit of support or a small group to connect with during your first Congress, you’ve come to the right place.

Who are the Chaos Mentors for?

Are you curious about Congress but not sure if you’ll feel at home there? Maybe you have …

tl;dr: halfnarp.events.ccc.de

In eager anticipation of 39C3, the dozens of curators in our six content teams have been working hard over the past few weeks: they have sent out invitations, evaluated submissions, written letters, researched, compared, created and discarded common themes, refined and tied up their loose ends, sorted, evaluated, and discussed submissions. Finally, they were able to distill the 763 submitted and invited talk proposals down to 164 and put together a plan that we are all convinced will provide us with an informative, entertaining, and memorable program on stage.

But …

tl;dr: please register your assembly over at the Hub no later than Sunday, 23 November, 23:42 (CET).

There will once again be tables, chairs and spaces in several areas and on several floors of the CCH during 39C3 waiting to be filled with your ideas, topics, and projects. Bring along whatever excites and inspires you in your communities, hackspaces, Erfas and Chaos spaces. Collaborate on projects and ideas, get in touch with interested parties, teach and learn, show, explore, and discover new things – and rediscover old ones.

In keeping with this year’s motto, Power Cycles, there will be some …

Earlier than ever before, the design team is giving us the opportunity to adorn flags, circuit boards, sunglasses, and websites with the hot Congress partner look. To this end, the two designers of 39C3, Nina Bender and Bernd Volmer, have lovingly crafted a design guide with a matching font that should spur our creativity and enable many playful and nerdy interpretations.

We have been provided with a professionally designed variable font to play with. Using only a few cleverly placed lines of CSS as in the examples here, blinking …

TL;DR:

This year, the Heralds will once again guide you through the 39C3 program. Unlike previous years, there have been some changes.

Would you like to join the Herald team? Then please contact 39c3-heralds@cccv.de by December 1 with the following information:

• Which Herald category you see yourself in (experienced Herald/mentor, Herald mentee)
• Link to a recording of your moderation (if available)
• Language skills (de/en/fr)
• Preferred topics/tracks (e.g., security, hardware, politics & society, art & beauty)
• Availability (day x, mornings, afternoons, evenings, nights)

The Heralds …