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Schedule

Theme
Der Hub wird spätestens Ende Januar archiviert, alle nutzerbezogenen Inhalte, Boards und auch einige Wiki-Seiten werden dabei entfernt. Alle öffentlichen Assemblies, Projekte und Veranstaltungen bleiben. // The hub will be archived by end of January. All user-provided content, boards and several wiki pages will be deleted. All public assemblies, projects and events will remain.
Schedule
all curated only assembly only self_organized only
Day 1 Day 2 Day 3 Day 4
recorded only not recorded only
Tracks
CCC & Community Hardware Security Art & Beauty Ethics, Society & Politics Science Live Performance DJ-Set Entertainment Clear track filter

 

Day 4
11:00

11:30

12:00

12:30

13:00

13:30

14:00

14:30

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15:30

One
Asahi Linux - Porting Linux to Apple Silicon (en)

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.
CCC&T - Cosmic ray, the Climate Catastrophe and Trains. (en)

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).
Security Nightmares (de)

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?

Ground
Atoms in Space (en)

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.
Von Groschen und SpurLos - GNU Taler auch auf eurem Event! (de)

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!

Zero
“End Of 10”: How the FOSS Community is Combatting Software-Driven Resource and Energy Consumption (en)

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.
We, the EU, and 1064 Danes decided to look into YouTube: A story about how the EU gave us a law, 1064 Danes gave us their YouTube histories, and reality gave us a headache (en)

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.
Infrastructure Review (en)

nicoduck

Infrastructure teams present what they did for this years congress and why they did it that way.

Fuse
Laser Beams & Light Streams: Letting Hackers Go Pew Pew, Building Affordable Light-Based Hardware Security Tooling (en)

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.
Battling Obsolescence – Keeping an 80s laser tag system alive (en)

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.