pajowu, Stella
Power On! Lasst uns gemeinsam an diesem magischen Ort ankommen und alles vorbereiten, um die nächsten vier Tage in einer fröhlich-kreativen, fantastischen Wunderwelt zu verbringen und Kraft zu tanken.
Kliment
Building electronics has never been easier, cheaper, or more accessible than the last few years. It's also becoming a precious skill in a world where commercially made electronics are the latest victim of enshittification and vibe coding. And yet, while removing technical and financial barriers to building things, we've not come as far as we should have in removing social barriers. The electronics and engineering industry and the cultures around them are hostile to newcomers and self-taught practitioners, for no good reason at all. I've been teaching advanced electronics manufacturing skills to absolute beginners for a decade now, and they've consistently succeeded at acquiring them. I'm here to tell you why it's not as hard as it seems, how to get into it, and why more people who think they can't should try.
Antonio Vázquez Blanco (Antón)
Despite how widely used the ESP32 is, its Bluetooth stack remains closed source. Let’s dive into the low-level workings of a proprietary Bluetooth peripheral. Whether you are interested in reverse engineering, Bluetooth security, or just enjoy poking at undocumented hardware, this talk may inspire you to dig deeper.
Marc-Uwe Kling, Linus Neumann
Marc-Uwe Kling liest neues vom Känguru vor.
Severin von Wnuck-Lipinski, Hajo Noerenberg
Almost everyone has a household appliance at home, whether it's a washing machine, dishwasher, or dryer. Despite their ubiquity, little is publicly documented about how these devices actually work or how their internal components communicate. This talk takes a closer look at proprietary bus systems, hidden diagnostic interfaces, and approaches to cloud-less integration of appliances from two well-known manufacturers into modern home automation systems.
Max, Julian
In this talk, we will give an introduction into the project (i.e. how it all started at 38c3 and why we are here now), provide an in-depth review of how the development process of our pager worked and what our future goals are. In our introduction, we will talk about the origin and exploration phase of the inital pager idea (i.e. how we went from the idea of bringing POCSAG Pager transmitter to 38c3, over a cable-bound prototype, to a first working pager on a proper PCB). We will also present our plans of connecting our POCSAG transmitter infrastructure to THOT (CERTs own dispatch software). For our in-depth review about the project, we explain how we encountered major reception problems, how we analyzed them at easterhegg22 and conducted experiments there, and why we are opting for a custom HF frontend design instead of an already-made one from chinese vendors. Moreover, we provide an overview of our transmitter devices and give some advice on how to replicate those. Lastly, we will discuss further challenges and what our next goals are. If we are reaching our milestone until 39c3, we will also give a live demo of the system.
Henri Jäger
This talk presents Apple's link-layer protocol Low-Latency WiFi and how it achieves its real-time capabilities to enable Continuity features like Sidecar Display and Continuity Camera. We make more kernel logging available on iOS and build a log aggregator that combines and aligns system- and network-level log sources from iOS and macOS.
Constanze Kurz, khaleesi, Matthias Marx, Linus Neumann, erdgeist
Das war nicht das Jahr 2025, das wir bestellt hatten.
Augustin Bielefeld, Alexander Willer
Why is electronics manufacturing hard? Can it ever be made easy and more accessible? What will it take to relocate industrial production to Europe? We share with you what we learned when we spent more than 1 year setting up our own production line in our office in Hamburg. Turns out a lot of the difficulties are rarely talked about or hidden behind "manufacturing is high CAPEX". Come and learn with us the nitty gritty details of batch reflow ovens, stencil printing at scale, and how OpenPnP is a key enabler in our process. While we are far from done with this work, we hope to see others replicate it and collectively reclaim the ownership of the means of electronics production.
bunnie, Sean "xobs" Cross
Xous is a message-passing microkernel implemented in pure Rust, targeting secure embedded applications. This talk covers three novel aspects of the OS: hardware MMU support (and why we had to make our own chip to get this feature), how and why we implemented the Rust standard library in Rust (instead of calling the C standard library, like most other Rust platforms), and how we combine the power of Rust semantics with virtual memory to create safe yet efficient asynchronous messaging primitives. We conclude with a short demo of the OS running on a new chip, the "Baochip-1x", which is an affordable, mostly-open RTL SoC built in 22nm TSMC, configured expressly for running Xous.
Hanno Böck
Data about greenhouse gas emissions, both from countries and individual factories, is often publicly available. However, the data sources are often not as accessible and reliable as they should be. EU emission databases contain obvious flaws, and nobody wants to be responsible.
Trammell Hudson
Learn how to find your position using a sextant and a custom slide rule, almost no math required!
Martin Lellep, Georg Balke, Felix Waldner
Bike- and e-bike-sharing promise sustainable, equitable mobility - but what makes these systems successful? Despite hundreds of cities operating thousands of shared bikes, trip data is rarely public. To address this, we built a geospatial analysis pipeline that reconstructs trip data from publicly accessible system status feeds. Using this method, we gathered **43 million km** of bike-sharing trips across **268 European cities**. Combined with over **100 urban indicators** per city, our analyses reveal how infrastructure, climate, demographics, operations, and politics shape system performance. We uncover surprising insights - such as why some e-bike systems underperform despite strong demand - and highlight how cities can design smarter, fairer mobility. All data and code are open-source, with an interactive demo at bikesharingflowmap.de.
Christoph Wiedmer
Nicht zuletzt durch die Werbung in den sozialen Medien werden in Deutschland immer mehr Nahrungsergänzungsmittel verkauft. Einige Influencer bringen sogar ihre eigenen Präparate auf den Markt. Gleichzeitig häufen sich Fälle, in denen die Einnahme von vermeintlich harmlosen „Supplements“ zu Gesundheitsschäden geführt hat. Der Vortrag will daher die Mechanismen hinter dem Supplement-Hype aufzeigen, zudem erklären, warum aktuell ein ausreichender Verbraucherschutz insbesondere im Internet nicht gewährleistet werden kann, wo Handlungsbedarf für die Politik besteht und wie man sich selbst vor fragwürdigen Produkten schützen kann.
sven
In this talk, you will learn how Apple Silicon hardware differs from regular laptops or desktops. We'll cover how we reverse engineered the hardware without staring at disassembly but by using a thin hypervisor that traces all MMIO access and then wrote Linux drivers. We'll also talk about how upstreaming to the Linux kernel works and how we've significantly decreased our downstream patches in the past year. As an example, we will use support for the Type-C ports and go into details why these are so complex and required changes across multi subsystems. In the end, we'll briefly talk about M3/M4/M5 and what challenges we will have to overcome to get these supported.
FantasticMisterFux
How can we predict soil moisture by measuring cosmic ray products and what have trains to do with it? Ever wondered how this Dürremonitor works, that you heared about in ther german news? These question and some more I will try to answer while I give an overview of some of the research that is done by the Helmholtz Centre for Environmental Research (UFZ).
Constanze Kurz, Ron
Was hat sich im Jahr 2025 im Bereich IT-Sicherheit getan? Welche neuen Methoden, Buzzwords und Trends waren zu sehen? Was waren die fiesesten Angriffe und die teuersten Fehler?
Stella, pajowu
Power off! Nach vier wunderbaren Tagen kommt der Congress nun langsam zum Ende. Lasst uns zurückblicken, die Eindrücke sortieren und diese inspirierte Stimmung nach draußen tragen.
Addison
Despite how it's often portrayed in blogs, scientific articles, or corporate test planning, fuzz testing isn't a magic bug printer; just saying "we fuzz our code" says nothing about how _effectively_ it was tested. Yet, how fuzzers and programs interact is deeply mythologised and poorly misunderstood, even by seasoned professionals. This talk analyses a number of recent works and case studies that reveal the relationship between fuzzers, their inputs, and programs to explain _how_ fuzzers work.
Elke Smith
Die Legalisierung des Online-Glücksspiels in Deutschland im Jahr 2021 und die zunehmende Normalisierung von Glücksspiel und Sportwetten in den Medien haben ein Umfeld geschaffen, in welchem Glücksspielprodukte leichter zugänglich und gesellschaftlich stärker akzeptiert sind als je zuvor. Diese weit verbreitete Exposition birgt erhebliche Risiken für vulnerable Personen, insbesondere da die Grenzen zwischen Spielen und Glücksspiel zunehmend verwischen. Seit einiger Zeit ist beispielsweise ein deutlicher Anstieg von Spielen zu beobachten, die Glücksspiel-ähnliche Items wie Loot-Boxen beinhalten. Komplexe Designmerkmale in elektronischen Glücksspielprodukten, z.B. Glücksspielautomaten und Online-Slots, sind gezielt darauf ausgerichtet, Individuen zu verlängerten Spielsitzungen zu motivieren, um den Umsatz zu maximieren. Während Glücksspiel für viele Menschen eine Form der Unterhaltung darstellt, kann das Spielverhalten bei manchen eskalieren und schwerwiegende Folgen für das Leben der Betroffenen haben. Dieser Vortrag wird Mechanismen in Glücksspielprodukten und Loot Boxen beleuchten und aufzeigen, weshalb diese Merkmale das Suchtpotenzial fördern können. Hierbei spielen Mechanismen des sogenannten Verstärkungslernens (engl. Reinforcement Learning) eine Rolle, die das menschliche Belohnungssystem aktivieren, also dopaminerge Bahnen, welche an der Vorhersage von Belohnungen beteiligt sind. Besonderes Augenmerk liegt auf dem Reinforcement-Learning, einem Framework zur Modellierung von Lernen durch belohnungsbasiertes Feedback, welches sowohl in der Psychologie zur Beschreibung menschlichen Lernens und Entscheidungsverhaltens als auch zur Optimierung von Machine-Learning-Algorithmen eingesetzt wird. Im Vortrag werden auch Ergebnisse aus eigener Forschung am Labor der Universität zu Köln vorgestellt. Ziel ist es, Mechanismen des Glücksspiels zu erklären, sowie das Bewusstsein für potenzielle Schäden für Individuen und die Gesellschaft zu schärfen und die Notwendigkeit von Regulation sowie verantwortungsbewussten Designpraktiken zu diskutieren.
Ingwer Andersen
Ihr macht eine Veranstaltung für viele Menschen? Dann haben viele Menschen auch viel Hunger. Jetzt wird euch gezeigt wie man für viele (mehr als 75) Menschen Essen zubereitet. Es braucht nur etwas Vorbereitung und Motivation!
Oliver Ettlin
With PTP 1588, AES67, and SMPTE 2110, we can transmit synchronous audio and video with sub-millisecond latency over the asynchronous medium Ethernet. But how do you make hundreds of devices agree on the exact same nanosecond on a medium that was never meant to care about time? Precision Time Protocol (IEEE 1588) tries to do just that. It's the invisible backbone of realtime media standards like AES67 and SMPTE 2110, proprietary technologies such as Dante, and even critical systems powering high-frequency trading, cellular networks, and electric grids.
Tony Wasserka
Presenting FEX, a translation layer to run x86 apps and games on ARM devices: Learn why x86 is such a pain to emulate, what tricks and techniques make your games fly with minimal translation overhead, and how we are seamless enough that you'll forget what CPU you're using in the first place!
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 2024, organisieren Freiwillige aus vielen Assemblies von etwa 10 bis 17 Uhr ein vielseitiges Workshop-Programm für angehende Hacker:innen.
Paul Koetter
It is 1976 and the USA long stopped going to the Moon when a Soviet automatic landing station called Luna 24 descends to the Lunar surface. It touches down on 3.3 Billion year old rock formations at a place no mission has ever gone before. What exactly happened remains a mystery to this day, but the space probe managed to take a 2.3 m long drill core from the Lunar regolith, packaged the sample in a genius way and launched it for its voyage to Earth. Some days later the sample entered earths atmosphere and landed in remote Siberia and ended up in our hands more than 50 Years later. We tell the story of the sample, the people that brought it to Earth and how we analyzed it with the newest methods including µm sized high intensity X-ray beams, 30kV electron beams and LN2 cooled infrared spectrometers.
Anne Lüscher
**Over the past few decades, nucleic acids have increasingly been investigated as alternative data storage media and platforms for molecular computing. This talk builds on past research and introduces another branch to the field: DNA cryptography based on random chemistry. This technology provides a platform for conceiving new security architectures that bridge the physical with the digital world.**
PhD (Philipp)
Factorio ist ein Fabriksimulationsspiel mit integriertem Logiksystem. Dies ermöglichte mir den Bau einer CPU, die unter anderem aus einer 5-stufiger Pipeline, einer Forwarding Logikeinheit, Interrupt Handling sowie einem I/O Interface besteht. Über einen selbst geschriebenen Assembler konnte ich ein eigenes Betriebssystem und Programme wie Minesweeper oder Snake integrieren. Der Talk soll euch zeigen, wie sich klassische Computerarchitektur in einem völlig anderen technischen Kontext umsetzen lässt und wo dabei überraschend echte Probleme der CPU-Entwicklung auftreten. Kommt mit auf die Reise: Vom Blick auf den gesamten Computer bis hinunter zu den einzelnen Logikgattern ist es nur eine Mausradbewegung entfernt!
Salacidre, JulianeB
Amidst gloomy headlines, extreme weather, and climate anxiety, the good stories often get lost. Yet they exist - inspiring people, clever engineering, real breakthroughs. And that's exactly what we bring you – the positive power cycles of the energy transition in action. And real energy on stage.
octoprog
Textiles are everywhere, yet few of us know how they’re made. This talk aims to give you an overview over the complete transformation from fiber to finished textile. We'll be exploring fiber properties, spinning, and techniques like weaving, knitting, crochet, braiding, and knotting, followed by finishing methods such as dyeing, printing, and embroidery. You’ll learn why not only fiber but also structure matters, and how to make or hack textiles on your own without relying on fast fashion or industrial tools.
willem
The TitanM2 chip has been central to the security of the google pixel series since the Pixel 6. It is based on a modified RISC-V design with a bignum accelerator. Google added some non standard instructions to the RISC-V ISA. This talk investigates the reverse engineering using Ghidra, and simulation of the firmware in python.
Jedes Jahr zwischen Weihnachten und Neujahr treffen sich tausende Hacker*innen zum Chaos Communication Congress in Hamburg. Der Azubi-Tag ist eine günstige Gelegenheit für Auszubildende, den Congress zu besuchen, den CCC kennenzulernen und viel über IT-Security, Technik und Gesellschaft zu lernen. Wir freuen uns, diesen Tag nun zum dritten Mal anbieten zu können.
rahix
3D-Printers have given us all the unprecedented ability to manufacture mechanical parts with a very low barrier to entry. The only thing between your idea and its physical manifestation is the process of designing the parts. However, this is actually a topic of incredible depth: Design engineering is a whole discipline to itself, built on top of tons and tons of heuristics to produce shapes that are functional, strong, and importantly: well-manufacturable In this talk, I will present the rules for designing well-printable parts and touch on other areas of design considerations so you can learn to create parts that work first try and can be reproduced by others on their 3d-printers easily.
Keno, Darius Auding
Die Teckids-Gemeinschaft bringt Kinder, Jugendliche und Erwachsene zusammen, um gemeinsam aktiv für eine verstehbare (digitale) Welt zu sein.
Elena
Humanity has already crossed the point where simply reducing emissions will no longer be enough to keep global warming below 2°C. According to the IPCC (AR6, WGIII), it is now essential to actively remove greenhouse gases from the atmosphere in order to meet global climate targets, maintain net-zero (or even net-negative emissions), and address the burden of historical emissions. At the same time, degraded soils and the climate crisis are a threat to global food security. Two years ago, I presented an overview of different methods available for carbon dioxide removal. Today, I want to show you an example of how CO₂ can be removed from the atmosphere while simultaneously improving the lives of local communities: Human shit. Human shit is a high abundant biomass, contains critical nutrients for global food security, and causes serious health and environmental issues from poor or non-existent treatment outside industrial countries. Converting shit into biochar presents a powerful solution: the process eliminates contaminants, stabilizes and locks away carbon, and can be used to improve agricultural soils. The challenge is that most nutrients in this biochar are not accessible to plants. To overcome this, I mixed human and chicken shit and produced a “Superchar” that releases far more nutrients. It’s not magic, it’s just some chemistry and putting aside your prejudices and disgust. I’ll show you how I did some shit experiments in Hamburg and Guatemala and how you can do it too.
manuel
*What are atoms doing in space anyways?* This talk will provide a brief overview of applications of quantum technologies in space ranging from precise timing and inertial measurements to fundamental physics.
Mikolai Gütschow, signum
Willkommen in der Zukunft: Beim LUG Camp in Wipperfürth und bei den Datenspuren in Dresden wurde digital bezahlt - mit GNU Taler als Event-Bezahlsystem. Noch einfacher als Bargeld, billiger als Kartenzahlung und ohne Eingriff in die Privatsphäre der Besucher*innen. Wir zeigen euch, wie auch ihr das bei eurer nächsten (Chaos-)Veranstaltung anbieten könnt!
Harald "LaF0rge" Welte
Like 39C3, the last CCC camp (2023) and congress (38C3) have seen volunteer-driven deployments of legacy ISDN and POTS networks using a mixture of actual legacy telephon tech and custom open source software. This talk explains how this is achieved, and why this work plays an important role in preserving parts of our digital communications heritage.
Michael Weiner
This project transforms a classic rotary phone into a mobile device. Previous talks have analyzed various aspects of analogue phone technology, such as rotary pulse detection or ringing voltage generation. Now this project helps you get rid of the cable: it equips the classic German FeTAp 611 with battery power and a flyback SMPS based ringing voltage generator - but still maintains the classical look and feel. The talk demonstrates the journey of bridging analog and digital worlds, explaining how careful design connects a vintage phone to today’s mobile environment - in a way that will make your grandparents happy.
Dennis Özcelik
Did you ever wonder where all the drugs, which you can get at a pharmacy, come from? Who makes them, and how? Well, there is no easy answer, because the process of drug discovery and development is a very complex, expensive, and challenging journey, riddled with many risks and failures. This holds true for all types of drugs, from a simple pill to an mRNA vaccine or a gene therapy. Today, scientists support this process with a variety of AI applications, cutting-edge technologies, automation, and a huge amount of data. But can the race for new medicines and cures succeed only through more technology, or do we need to rethink the entire process? Let’s take a look at how the drug discovery and development process has worked so far, and how this entire process is changing – for better or worse.
elfy
A 595€ wheelchair remote that sends a handful of Bluetooth commands. A 99.99€ app feature that does exactly what the 595€ hardware does. A speed upgrade from 6 to 8.5 km/h locked behind a 99.99€ paywall - because apparently catching the bus is a premium feature. Welcome to the wonderful world of DRM in assistive devices, where already expensive basic mobility costs extra and comes with in-app purchases! And because hackers gonna hack, this just could not be left alone.
MarKuster
Science advances by extending our senses beyond the limits of human perception, pushing the boundaries of what we can observe. In photon science, imaging detectors serve as the eyes of science, translating invisible processes into measurable and analysable data. Behind every image lies a deep understanding of how detectors see, respond and perform. At facilities like the European XFEL, the world's most powerful X-ray free-electron laser located in the Hamburg metropolitan area, imaging detectors capture ultrashort X-ray flashes at MHz frame rates and with high dynamic range. Without these advanced detectors, even the brightest X-ray laser beam would remain invisible. They help to reveal what would otherwise stay hidden, such as the structure of biomolecules, the behaviour of novel materials, and matter under extreme conditions. But how do we know they will perform as expected? And how do we design systems capable of “seeing” the invisible? I will take a closer look how imaging technology in large-scale facilities is simulated and designed to make the invisible visible. From predicting detector performance to evaluating image quality, we look at how performance simulation helps scientists and engineers understand the “eyes” of modern science.
lilly
Learn from our mistakes during the first iteration of Network Operations for Europe's largest furry convention, Eurofurence. Dieses Jahr hat ein kleines Team aus dem Chaos, Furries und Chaos-Furries ein neues Netzwerk-OC gegründet, um die Eurofurence mit gutem premium 👌 Internetz auszustatten. Wir erzählen von unseren Erfahrungen und den sozialen sowie technischen Herausforderungen.
Bonnie, keldo, Andi Bräu
Lightning Talks - Tag 2
akira25, flx, Gato
Wir geben Einblicke in zwei intensive Wochen Planung, Koordination und Aufbau, den Betrieb einer (improvisierten) Bodenstation, sprechen über technische Hürden, Antennendesign und Organisation – und wie wir schließlich mit Astronautin Rabea Rogge im Weltraum gefunkt haben.
Jan Pleskac
The talk will be about our experience from building an open-architecture secure element from the ground up. It explains why openness became part of the security model, how it reshaped design and development workflows, and where reality pushed back — through legal constraints, third-party IP, or export controls. It walks through the secure boot chain, attestation model, firmware update flow, integration APIs, and the testing framework built for external inspection. Real examples of security evaluations by independent researchers are presented, showing what was learned from their findings and how those exchanges raised the overall security bar. The goal is to provoke discussion on how open collaboration can make hardware more verifiable, adaptable, auditable and while keeping secure.
breakingbread
This talk explores the internals of Overwatch which make the game work under the hood. The end goal is to democratise development of Overwatch. Being able to host your own servers and modify the game client to your liking should not be up for discussion for a game many people have paid money for.
Axel Böttcher
Der Vortrag beschreibt, wie eine Gruppe von Begeisterten eine Sammlung von ca. 100 Flipperautomaten (Pinball Machines) am Leben und in spielbereitem Zustand erhält.
Bonnie, keldo, Andi Bräu
Lightning Talks - Tag 3
Tobias Höller
Science is hard and research into the usage of the Tor network is especially so. Since it was designed to counter suveillance, it gathering reliable information is difficult. As a consequence, the studies we do have, have yielded very different results. This talk investigates the root causes of contradicting studies by highlighting how slight changes in methodology or data selection completely change the results and thereby our understanding of what the Darknet is. Whether you consider it the last bastion of freedom or a haven of crime, this talk will tell you where to look and what to ignore in order to confirm your current opinion. And in case you are open to changing it, we have some food for thought for you.
Maarten W
The Dutch railways have been operating an increasingly complicated network of trains for over 80 years. The task of overseeing it is far too complex for a single human. As such, a network of specifically scoped humans has been connected. Over time, computers and software have been introduced into the system, but today there is still a significant role for humans. This talk describes the network of "human microservices" that is involved in the Dutch Railways' day to day operation from the eyes of a software developer.
Joseph P. De Veaugh-Geiss, Carolina Silva Rode, Bettina Louis
The end of free support for Windows 10 was 14 October 2025. Well, sort of. Microsoft moved the date to 2026, one more year the FOSS community can introduce users to sustainable software. 14 October is also KDE's birthday, International E-Waste Day, with International Repair Day following on 18 October. The irony is deep, but what is not ironic is that millions of functioning computers will end up becoming security risks or discarded as e-waste. This means manufacturing and transporting new ones, the biggest waste of all: hardware production accounts for over 75% of a device's CO2 emissions over its lifespan. The FOSS community had an opportunity and we took it! In 2024, KDE Eco's Opt Green project began a global, unified campaign across FOSS and repair communities to upgrade unsupported Windows 10 computers to Linux. We held BoFs at SFSCon, CCC, and FOSDEM. We thought big and acted boldly. In this talk End Of 10 contributors will discuss the campaign, what has worked and what the challenges have been, and how FOSS provides a solution to software-driven resource and energy consumption.
David, LK Seiling
We explore what happens when Europe’s ambitious data access laws meet the messy realities of studying major digital platforms. Using YouTube as a central case, we show how the European Union’s efforts to promote transparency through the GDPR, the Digital Services Act (DSA), and the Digital Markets Act (DMA) are reshaping the possibilities and limits of independent platform research. At the heart of the discussion is a paradox: while these laws promise unprecedented access to the data that shape our digital lives, the information researchers and citizens actually receive is often incomplete, inconsistent, and difficult to interpret. In this talk, we take a close look at data donations from over a thousand Danish YouTube users, which at first glance did not reveal neat insights but sprawling file structures filled with cryptic data points. Still, if the work is put in, these digital traces offer glimpses of engagement and attention, and help us understand what users truly encountered or how the platform influenced their experiences. The talk situates this challenge within a broader European context, showing how data access mechanisms are set up in ways that strengthen existing power imbalances. Application processes for research data vary widely, requests are rejected or delayed without clear justification, and the datasets that do arrive frequently lack the granularity required for meaningful analysis. Yet the picture is not purely bleak. Citizens, researchers, and civil society already have multiple legal levers to demand greater transparency and accountability. The fundamental question is no longer whether democratic oversight is possible, but how we can use the tools at hand to make it real.
nicoduck
Infrastructure teams present what they did for this years congress and why they did it that way.
Kauz
OpenAutoLab, an open source machine, that is capable of processing contemporary color and black-and-white films for analogue photography, is being presented here. It made its first public appearance at 37C3 and was already seen there in action, but had no organized talk or proper presentation. Now it is better documented, waits to be built by more people and to be further developed by the community. This talk is about motivation behind developing OpenAutoLab and about the technical decisions made during it. It is argued that any dedicated film photographer is able to get one built.
Beata Hubrig, Nuri Khadem-Al-Charieh
Zur Überraschung Vieler sind Juristen Wissenschaftler, die nach wissenschaftlichen Maßstäben arbeiten sollten und ihre Schriftsätze und Urteile auch nach stringenten wissenschaftlichen Kriterien gestalten und untereinander diskutieren sollten. Doch nur in einigen Rechtsgebieten funktioniert dies. Wie jede Wissenschaft ist auch die Rechtswissenschaft nur so gut wie das ihr zugrundeliegende Quellenmaterial – in diesem Fall sind das meist Urteile. Empirische Untersuchungen über diese Daten sind nur möglich, wenn sie der Forschung auch zur Verfügung stehen. Doch wissenschaftliche Arbeit im juristischen Feld ist aktuell nicht wirklich möglich, da die wenigsten Urteile veröffentlicht werden, da sich die Gerichte meist vor der dadurch anfallenden Arbeit scheuen. Wir betrachten, warum dies Grundsätze der Rechtsstaatlichkeit infrage stellt und warum Player aus der Wirtschaft mehr über deutsche Rechtsprechung wissen, als unsere Gerichte – und wie sie das zu Geld machen.
Deanna
Neben dem Congress gibt es noch viele andere Chaos-Events, die über das ganze Jahr verteilt stattfinden. Das Easterhegg, die GPN und die MRMCD kennen vermutlich die meisten Chaos-Wesen. Aber was ist eigentlich mit den ganzen kleineren Veranstaltungen?
giulioz
Have you ever wondered how the chips and algorithms that made all those electronic music hits work? Us too! At The Usual Suspects we create open source emulations of famous music hardware, synthesizers and effect units. After releasing some emulations of devices around the Motorola 563xx DSP chip, we made further steps into reverse engineering custom silicon chips to achieve what no one has done before: a real low-level emulation of the JP-8000. This famous synthesizer featured a special "SuperSaw" oscillator algorithm, which defined an entire generation of electronic and trance music. The main obstacle was emulating the 4 custom DSP chips the device used, which ran software written with a completely undocumented instruction set. In this talk I will go through the story of how we overcame that obstacle, using a mixture of automated silicon reverse engineering, probing the chip with an Arduino, statistical analysis of the opcodes and fuzzing. Finally, I will talk about how we made the emulator run in real-time using JIT, and what we found by looking at the SuperSaw code.
Erwin Ernst "eest9" Steinhammer, lasii, Daniel, Niklas
Auf der Insel Rügen und in Österreich tut sich was - und zwar neue Chaos Events. Wir möchten über Anforderungen, Herausforderungen, Hürden, Erfahrungen und Glücksmomente aus unserer Sicht der Orga erzählen. Das InselChaos fand im LaGrange e.V. im September 2025 statt und bildet den Auftakt für weitere kreative, informative und chaotische Events auf der Insel Rügen. Das Håck ma’s Castle wird mit etwas Humor auch über Herausforderungen sprechen, welche unter anderem durch dezentrale Teams aus diversen Hackspaces entstehen.
Kohlenpod, kater, Stephan
Aus einem Barwitz wurde ein Projekt! Blumenthal7 ist die letzte vollständig erhaltene Schachtanlage des ehemaligen Steinkohlebergwerks General Blumenthal in Recklinghausen im nördlichen Ruhrgebiet. Nach diversen Startschwierigkeiten ist aus einer im Dornröschenschlaf liegenden Industriebrache ein Projekt geworden, das bereits jetzt einer Vielzahl von Entitäten und Gruppen eine Heimat und einen großen, nahezu grenzenlosen Spielplatz bietet. Begleitet uns gerne beim Power Cycle B7…!
Hendrik Ballhausen
Der Trend geht dahin, aus Gesundheitsdaten große zentralisierte Datenbanken aufzubauen. Eine datensparsame Alternative dazu ist, in einem verschlüsseltem Netzwerk gemeinsam auf verteilten privaten Daten zu rechnen, ohne sie miteinander teilen zu müssen. Perspektivisch können so demokratischere Datenströme geschaffen werden, die Patient:innen als aktiv Teilhabende statt als passive Datenquellen einbinden. Kommt mit auf eine Reise, die vor sechs Jahren in Deutschland gestartet ist und jetzt die erste europäische klinische Studie mit Secure Multiparty Computation (SMPC) realisiert hat.
Marco Wähner
Der Vortrag diskutiert Herausforderungen dezentraler Netzwerke aus soziologischer Perspektive. Als dezentrale Netzwerke werden technische Infrastrukturen verstanden, die nicht von einer zentralen Autorität, sondern verteilt über Instanzen zur Verfügung gestellt werden. Nutzer:innen profitieren von dieser Infrastruktur, nutzen beispielsweise das Fediverse oder das Tor-Netzwerk, ohne zur Infrastruktur beizutragen. Zugleich können dezentrale Netzwerke nur dann bestehen, wenn hinreichende Ressourcen von Personen oder Organisationen mobilisiert werden, um das Netzwerk überhaupt zur Verfügung zu stellen. Dies führt zur originären Instabilität dezentraler Netzwerke, wenn nicht der Weg der Kommodifizierung des Nutzer:innenverhaltens eingeschlagen wird. Aufbauend auf dieser Zustandsbeschreibung, werden Bedingungen erörtert, um Kollektivgüter wie dezentrale Netzwerke organisatorisch (und nicht technisch) herzustellen. Hierzu zählen Partizipation oder die Idee einer öffentlichen Grundfinanzierung. Der Vortrag wird neben soziologischen Ideen und harten Zahlen auch durch eine ordentliche Portion Idealismus zu Fragen der Souveränität und Autonomität in der Digitalisierung motiviert.
cyanic
The Vital Bracelet series is an ecosystem of interactive fitness toys, content on memory chips, and apps that talk via NFC. In this talk, we'll explore the hardware and software of the series, from its obscure CPU architecture, to how it interacts with the outside world, from dumping OTP ROMs and breaking security, to making custom firmware.
girst (Tobi)
Over the last half year I have explored the Motorola mc14500 - a CPU with a true one-bit architecture - and made it simulate Conway's Game of Life. This talk gives a look into how implementing a design for such a simplistic CPU can work, and how it's possible to address 256 LEDs and half a kiloword of memory with just four bits of address space.
Moritz Zeising (er/he)
Die Arktis ist eine Region, in der die Sonne monatelang weg ist, dickes Meereis den Weg versperrt und deshalb Forschungsdaten ziemlich rar sind. Kompliziert also, herauszufinden was im Wasser blüht! Mit einer Kombination aus Satellitenbildern, Expeditionen und Modellsimulationen auf Hochleistungsrechnern versuche ich, das Verborgene sichtbar zu machen: die faszinierende, farbenfrohe Welt des arktischen Phytoplanktons.
Kire, Rahel
Auch in der Schweizer Netzpolitik ging es im auslaufenden Jahr drunter und drüber. Wir blicken mit gewohntem Schalk auf das netzpolitische Jahr 2025 zwischen Bodensee und Matterhorn zurück - und diskutieren jene Themen, die relevant waren und relevant bleiben.
sjaelv, MultisampledNight
The Spectrum is a newly founded queer-feminist, intersectional hackspace centering FLINTA+, disabled, and marginalized beings. We see hacking as playful exploration—of technology, art, and ideas—to reimagine what inclusion and collaboration can be. At 39C3, we share how awareness, accessibility, and transdisciplinary creation can transform community and hack the norm.
Patch, Sam. Beaumont (PANTH13R)
Stored memory in hardware has had a long history of being influenced by light, by design. For instance, as memory is represented by the series of transistors, and their physical state represents 1's and 0's, original EPROM memory could be erased via the utilization of UV light, in preparation for flashing new memory. Naturally, whilst useful, this has proven to be an avenue of opportunity to be leveraged by attackers, allowing them to selectively influence memory via a host of optical/light-based techniques. As chips became more advanced, the usage of opaque resin was used as a "temporary" measure to combat this flaw, by coating chips in a material that would reflect UV. Present day opinions are that laser (or light) based hardware attacks, are something that only nation state actors are capable of doing Currently, sophisticated hardware labs use expensive, high frequency IR beams to penetrate the resin. This project demonstrates that with a limited budget and hacker-and-maker mentality and by leveraging more inexpensive technology alternatives, we implement a tool that does laser fault injection, can detect hardware malware, detect supply chain chip replacements, and delve into the realm of laser logic state imaging.
Trikkitt
Keeping old projects working can be an uphill battle. This talk explores how the laser tag system Q-Zar (Quasar in the UK) has been kept alive since the company behind it failed in the 90s. The challenges encountered, the lessons learnt, and how those can be applied to our own future projects to maximise the project lifetime.
CooperfrauMelissengeist
Ein geschlossener Kreislauf aus Klang und Störung. Kein Instrument, kein Ursprung, nur das Rauschen, das sich selbst gebiert. Frequenzen kratzen an der Grenze zum Bewusstsein, Feedback wird zum Atem einer Maschine ohne Körper. Aus dem Dunkel des Signals erhebt sich ein sirrendes Mantra — chaotisch, unheilig, autark. Eine Beschwörung der Leere durch elektrische Selbstzerstörung.
tippel radio
Das "tipple radio" ist eine Collage von Singer-Songwriter-Konzert und szenischer Lesung. Es trägt gecoverte und selbstgeschriebene Songs und Medleys von Punk über Hamburger Schule bis Schlager mit Gitarre und Gesang vor und verknüpft die Inhalte der Songs miteinander. Es entsteht ein Geflecht von Musik und Text, dass Aufbrüche in Abgründen aufzeigt und Hoffnung macht sich gegen die Faschisierung in der Gesellschaft zusammen zu schließen.
Einschiss
Einschiss ist DER Ausnahmekünstler zwischen den Stationen Paracelsus Bad und Rathaus Reinickendorf der U8. Gefangen im Körper eines Mannes mit Charaktermodell German_default_3_bearded.obj macht Einschiss Musik gegen die Dinge die nerven: Nazis, Arbeit und Consent Forms (und Arbeit). Dabei setzt er modernste Technologien ein, um einen Typen so klingen zu lassen, als wäre es ein Typ mit Backing Track. Für mehr Musiker:innen hat das Bier nicht gereicht. Sorry.
elenos
Das Konzept ist simpel: Wir singen zusammen. Im Angebot haben wir vier Kategorien: Politische Classics, Punkrock-Hymnen, Antifaschistische Jodler und Umverteilungs-Hits des Quartiersmanagements Grunewald in der ansprechenden Karaoke-Variante. Man muss nichts können. Mit charmanter Anleitung manövrieren wir uns zusammen durch kollektive Dissonanzen!
tomate, anna
Kultivierte Personen rezitieren Punkrock-Songtexte mit der ganzen Ernsthaftigkeit und dem dramatischen Pathos, wie sonst nur von Goethe-Abenden im Literaturhaus bekannt. Anarchie meets Bildungsbürgertum. Chaos meets Chaiselongue.
Pianostein
Klassiker des antifaschistischen Deutschpunk-Liedguts – von Die Ärzte über Die Toten Hosen bis WIZO und Terrorgruppe – neu interpretiert auf dem Akkordeon. Laut, links und garantiert mitgröltauglich.
Kurt Tucholsky, Bertolt Brecht, Friedrich Hollaender, Claire Waldoff: Sie alle waren feste Größen des Berliner Kulturlebens. Es war wild, es war queer, es war jüdisch. Dann kamen die Nationalsozialisten an die Macht. Wer anders dachte – und sang! – wurde systematisch aus dem Land getrieben. Wer konnte, flüchtete ins ungewisse Exil.
Der Untergang*
Späti Punk Karaoke Special mit Der Untergang* Wir sind der Untergang*. Wir sind Julia Wilton (Das Bierbeben, Pop Tarts) und Thies Mynther (Das Bierbeben, Superpunk, Phantom Ghost, Chaos Communication Choir). Wir werden ein kleines Konzert spielen, tragen aber auch gern etwas zum sehr guten Punk Karaoke bei. Zum Mitsingen und Mikrophonhijacking wird unbedingt eingeladen. Eventuell schaut auch der Chaos Communication Choir dabei.
Takakalle
Schrammelpunk aus Hamburg
Steuerkarten für Freunde
Minimal bis Post-Punk Cringe aus dem Bedroom. Endlich mal wieder aus sich heraus- und einander näher kommen. Für die Friends von den Friends mit guten Texten, meistens Punk, manchmal sanft, aber Hauptsache Spaß.
Oliotronix
Gaylienz is the new project of 3 gayliens coming from various universes. They got united to bring us an audio-visual glitch rave experience where we surf with an alien cats thru chaos and love cosmos. The audience is invited to participate too and of course to dance. Expect acid basslines, circuit bent, gayboy noise, beat constructions and analog glitch and videogame visuals - by Yelo555, Oliotronix and Maria Mam. https://www.instagram.com/gali3nz/ https://www.instagram.com/yelough.strobez/
Keks
Finally a drag show at the chaos! Blinking lights, colorful outfits, and queers everywhere already seems normal at the congress. So how can it be, that all of this did not come together as drag on stage?! It is time for a really awesome, great drag show at the 39c3! And to show right away how divers drag is, a wonderful cast of drag artists of various genders and expressions can spread their queer joy and art for the audience. The show is hosted by Milky Gay, the nerdiest drag king from NRW, who does not only want to throw glitter at the congress incognito this year. And he is bringing an amazing cast with him Bingus Bongus (Drag Queen, Hamburg) Neuro Spicy (Drag King, NRW) Missass Nostalgia (Drag Queen, NRW) and Kaín Mensch (Drag Thing, Hamburg) will bring their queer art to finally merge chaos and drag! Everyone is welcome, we are trying to have as little barriers as possible to come and watch. No blinking lights during the show (no guarantee for the path there and acts before and after), Music Club accessible with mobility aids and wheel chairs (ask assigned angles). Mostly standing room, few seats at the side might not allow for a good view of the show. Content notes for certain parts of the show include death, cancer, violence, fake weapons, and sexual violence, and will be announced in time so people can leave and come back afterwards. Cheering is encouraged, so it might get loud. (more details tba). Please be nice to each other and especially help short people as well as queers to find a spot where they can see enough. Also, as drag is expensive, there will be a tipping round in the end - please bring some cash if you consider tipping the artists, but of course you are also welcome either way.
Kenji Tanak
In my improvised live set, my random generators and I bounce ideas off each other. This approach allows previously created loops to flow into endless new combinations.
Denise Frey
Denise Frey macht elektroakustische Ambient-Musik – ruhig, vielschichtig, atmosphärisch. Mit Saxophon, MPC, Effektgeräten und einem feinen Gespür für Klang formt sie in ihren Konzerten Klanglandschaften, die einladen zum Loslassen, Lauschen, Entspannen. Ihre Musik entsteht live – improvisiert, organisch, unmittelbar.
Tinabel
Tinabel (Tina Belmont) plays a set of her punky electronic rock songs using "Rhythm Core Alpha 2", software which she created herself, on the Nintendo DSi & 3DS game consoles. See http://www.tinabelmont.com and http://www.whitecollarpunk.com to hear the music, or http://rhythmcorealpha.com to learn about the software!
Jan Dalvik
Techno. Live. Modular.
ARKIFEL
Dance to an internet tanuki playing live upbeat techno on a Gameboy Advance using nanoloop two, a software sequencer cartridge. Everything you hear is coming from one GBA!
Christian Faubel
The Uncontrolled Manifold works with electronics and machines that possess autonomy and obstinacy. These machines are brought into interaction with each other, creating danceable polyrhythms and, at the same time, a fascinating shadow play, because the machines are mounted on an overhead projector and their interaction is projected. Analog oscillators generate self-organizing coordination dynamics and organic patterns, while motors strike rubber strings producing deep, resonant bass sounds reminiscent of shamanic drumming. Supported by the visuals spectators may feel like being dragged into the vortex of a living clock, compelled to join the performance through movement and dance.
Lila-Zoé Krauß
L Twills aka Lila-Zoé Krauß ist Musikerin, Performerin und Multimedia-Künstlerin. In ihrer Arbeit entwickelt sie eine transdisziplinäre Opernpraxis, um Fragen zur (post-)moderner Subjektivität und ihrer Beziehung zu Medien, Trauma und Erinnerung zu thematisieren. Sie studierte Bildende Kunst an der HFBK Hamburg und dem CalArts Los Angeles sowie Sound Studies an der UdK Berlin. In ihrer Musik kombiniert sie Elemente aus Downtempo, Experimentalmusik, Breakbeat und Oper mit eigens entwickelten Sounddesign-Techniken. Krauß veröffentlichte 2020 und 2024 die Vinylalben [Freedom/Fiction] und [After her Destruction] und performte auf diversen Bühnen, u.a.: Documenta Fifteen (Kassel), Kampnagel (Hamburg), Volkstheater (Wien), Montez-Press Radio (NYC), NAVEL (Los Angeles).
Unnamed user
Gajek produces and performs electronic music. Since 2014 He released five studio albums on Labels such as STROOM, Infinite Greyscale, Throttle Records and more. Gajek composes music for films and theatre. He has performed at major international venues and festivals such like Berghain, silent green, Printworks London, Traumabar Und Kino, ADE Amsterdam, Melt Festival and many more. Gajek lives and works in Berlin.
Cloud Management
Operating in a mode of Kluster via Pole, Dub Syndicate at Conny Plank's, or even fang-baring flashes of The Bug and Bryn Jones or Peak Oil modernism, the trio approach the project from the more oblique angles of respective projects Datashock, Phantom Horse and Love-Songs, to probe a more soft-centred, dematerialised and heady sound, but also reserve the right to go tuffer, more venomous, when they feel it.