pascoda, lavalaempchen
Zielgruppe für diesen Workshop sind be_hinderte Congress-Besucher:innen (CCCrips). Eine Hackspace- oder C3-Mitgliedschaft ist komplett optional. Wir wollen uns untereinander kennenlernen, Erfahrungen austauschen, und Pläne schmieden! Weltherrschaft, anyone?
Bücherratten
Ich möchte mit euch das Netzwerk erkunden, vom Endgerät bis zum Router, der das Internet "anruft". Wir werden uns auf das lokale Netzwerk beschränken und zum Schluss einmal durch spielen was im Netzwerk auf der Leitung eigentlich passiert.
Laurin Weger
[NextGraph](https://nextgraph.org/) is a framework aimed at making live collaboration, offline support, end to end encryption, and application interoperability easy. In this demo, I will walk you through the basics of NextGraph and our new TypeScript SDK. The new TypeScript SDK turns RDF graph database records into ordinary, typed objects with instant two‑way binding. By proxying those objects and emitting signals, the SDK provides a framework‑agnostic reactive layer that integrates cleanly with React, Vue, and Svelte. **You will** get a short introduction to NextGraph, RDF (a graph data format designed for interoperability), and a live demo walking through a simple property change, showing how a mutation is instantly persisted to the database, syncronized, and reflected in UI components across React, Vue, and Svelte.
freerk
Build your own open-source Bitcoin signing device with a Raspberry Pi Zero, camera and display! We have kits for 45€
fluorescent_beige, Liam
We will give a brief introduction to the Reticulum Network Stack and announce what is new in 2025: - Reticulum will soon be available in Rust, which will allow users of embedded systems a better performance. - The new Reticulum BLE Interface enables the creation of autonomous mesh networks without any further hardware or central server. The interface can be used on Linux and Android. - The Columba App for Reticulum lowers the barrier of entry for using Reticulum.
Joshua Davila
What would it look like to build financial infrastructure for solidarity rather than speculation? While blockchain technology has largely been captured by libertarian and extractive market logic, it certainly does not need to be that way. In this talk, we'll explore Solidarity Primitives, development and architectural design patterns designed to forge economic solidarity between individuals and collectives. Drawing from our work at Bread Cooperative and research I've documented through my podcast, The Blockchain Socialist, we'll examine concrete examples like the BREAD community token, savings circles implementation, and the Solidarity Fund mechanisms that enable participatory funding without relying on venture capital or traditional financial intermediaries. We'll discuss how these primitives address a critical gap: the technical and coordination barriers that have historically made alternative economic models difficult to implement at scale. From worker cooperatives to mutual aid networks, the infrastructure simply hasn't existed. Peer-to-peer technologies can change that but only if designed with solidarity, not profit maximization, as the core principle. This talk is for anyone interested in the practical dimensions of building a post-capitalist economy: what does it actually look like to write code for collective autonomy? How do we ensure decentralized systems serve communities rather than concentrating power?
Casey Ford
Online anonymity is being demonized and undermined. But anonymity has an important social function for preserving individuals and group against social threats. We will argue for the philosophical and political value of being anonymous, especially against the rising state of capture in state and corporate surveillance. Anonymity is more than namelessness: it's a tool of resistance.
Ron Turetzky
Mutual-vend.com - smallest self contained coop decentrally owned and operated infra
Ryta
Looking at how decentralized social networks, AI, XR, blockchain, and other technologies come together to shape the next stages of web evolution.
Scott Beibin, Elizabeth Jane Cole
++ ++ ++ ++ ++ ++ ++ ++ The closing presentation at the Critical Decentralization Cluster assembly during 39C3 is a progress report on Offworld Voyage, a Space Analog Research project dedicated to the design of environmentally sustainable interplanetary exploration training habitats that also solve for adaptation to climate biodevastation on Earth. The talk will focus on some of the various ways in which Free/Libre Open Source technologies are incorporated into the project - with a strong focus on the development of decentralized and distributed coordination systems for autonomous and collective action - and how creative technologists can plug in and participate in the project. As a special show-and-tell treat Scott Beibin and Elizabeth Jane Cole, founders of Offworld Voyage will display the new pressurized training spacesuit prototypes they recently commissioned Smith Exploration Garments to build for the project. See you there!
aline
This workshop aims to equip techies and activists with some understanding to recognize and address emotional concerns in the context of digital rights. Together, let’s cultivate a flourishing community that prioritizes well-being and empowerment in the face of technology-driven challenges.
Gnitze
Brief presentation of the Hansaplatz Coalition Against AI Camera Surveillance.
Kai Bojens
Auf dem Bundesparteitag der Grünen habe ich den Antrag gestellt, sich für ein europäisches Grundrecht auf Verschlüsselung einzusetzen. Dieser Antrag wurde angenommen und ich will jetzt mal schauen, inwiefern dieses Thema außerhalb der Politik auf Unterstützung trifft und wie man zum Beispiel in der Zivilgesellschaft dafür Verbündete finden kann.
Sapi, Clara & Co.
Chaos prepping in case of communication collapse Was würden wir tun, wenn dies der letzte Congress wäre, wo wir in der gewohnten Art miteinander kommunizieren oder uns frei miteinander treffen könnten - wenn ein nächster Congress wegen Faschisten, Überwachung und/oder anderer Katastrophe in dieser Form nicht mehr möglich wäre? What would we do, if this would be the last congress in which we could meet freely and communicate in the known way, if a next congress somehow would not be possible this way, because of faschism, surveillance and/or other catastrophe? Ein kurzer Austausch zu Szenarien und Ansätzen, damit umzugehen. A brief exchange on scenarios and possible ways to deal with them.
Thomas Lohninger
In Europa ist die Netzneutralität ein im EU-Recht verankertes Prinzip, das besagt, dass alle Daten im Internet gleich behandelt werden müssen. Doch was geschieht, wenn große Anbieter wie die Deutsche Telekom dieses Prinzip durch ihre Zusammenschaltungspraktiken systematisch verletzen?
oxzi
Computer programs run with all privileges of the running user. If your user can read your emails, then so can any other program you run. However, many programs do not need most permissions and perhaps should not have them at all. This workshop demonstrates quite simple ways in which software can self-restrict itself. The focus will not be on foreign, potentially malicious software, but on hardening programs against misconduct and future security vulnerabilities. Several operating systems have developed different interfaces that restrict software beyond its normal scope. This workshop will focus on POSIX and especially OpenBSD because of its user-friendly APIs. Although other operating systems, such as Linux, will be discussed, they will not be covered in depth due to their more complicated APIs. Within the workshop part, software with known security vulnerabilities is then patched together - usually with almost a single line. Ideally, an exploit has hardly any effect afterwards, although the vulnerability is still present. This is not intended to encourage carelessness, but rather to demonstrate the development of a further safety net for software. A basic understanding of programming is required and, more importantly, an interest in the topic. You will need to bring an SSH client, for example a laptop with (almost) any operating system. The language will be either English or German, depending on who shows up.
Tobias
Can organisations with limited resources be digitally sovereign and still provide modern services? It is not trivial, but the FSFE proves it's possible. In this workshop we want to share our story and hear from you how you are running your NGO on FreeSoftware.
micu, sylvia
Wir begeben uns auf eine Entdeckungsreise durch Linux - von der Vielfalt eines Betriebssystems. Was ist (F)OSS? Wie sieht so ein Linux aus? Was kann man damit machen? Und kann man damit auch spielen?
skickar, koufax
Cat Got Your Password: Wi-Fi Self Defense For Beginners
skickar
Martha
Workshop mit Well Gedacht Publishing TAG 1: 20:30 - 22:00 TAG 2: 20:00 - 21:30 TAG 4: 11:30 - 13:00
Workshop with Anna Maria DAY 2: 12:00 - 13:00 DAY 4: 14:00 - 15:00
Amy (she/her), Luxis
Dies ist ein Meet-up für dissoziative, plurale Systeme* (oder Wesen die questioning sind). Das Meetup ist hauptsächlich dafür da um einen Austausch herzustellen, Erfahrungen zu Teilen und sich weniger allein zu fühlen.
scharmander
Jeden Tag geben wir einen kurzen Einblick in den Aufbau der CADUS Academy: unserer offenen Lernplattform für medizinische, technische und psychosoziale Trainings. Wir zeigen, wo wir gerade stehen, welche Ideen wir verfolgen und wie die Community sich einbringen kann. Fragen, Feedback und spontaner Austausch ausdrücklich willkommen.
Ein Crashkurs, in dem wir praktisch ausprobieren, wie man am Besten eine Person trägt, die nicht mehr selbst mobil ist. Ob verletzt, bewusstlos oder einfach nur betrunken - es schadet nie zu wissen, wie man in brenzligen Situationen nicht nur Verantwortung, sondern auch einen Körper trägt.
Jasmin (she/her) und Luisa (she/her)
Was haben Buster Keaton, Omar Sharif, Winston Churchill und Mahatma Gandhi gemeinsam? Sie alle waren leidenschaftliche Bridgespieler. Tauche mit uns in diesem Crashkurs ein in die faszinierende Welt des bekanntesten Stich-Kartenspiels der Welt. Denn Bridge ist nicht nur das "Spiel der alten Damen in englischen Filmen" sondern bietet jede Menge Möglichkeiten zu knobeln, ständig neues zu lernen, für Teamwork und ausgefeilte, analoge Kommunikationssysteme. Ihr lernt bei uns die Grundregeln des Spiels und könnt euch direkt selbst am Problemlösen probieren. Wir haben ein paar Karten dabei, wenn ihr aber selbst Spielkarten (Französisches Blatt, 52 Karten) habt, bringt gerne welche mit.
Bonnie
You are a FSFE volunteer or you would like to know more about the Free Software Foundation Europe? Then this is the place to be. We will be discussing current activities, future activities, and what will be happening next. You are welcome to join us for some food and drinks while sharing your ideas and learning all about the FSFE and its current activities.
benks
Du bist schon Teil von Bits & Bäume oder interessierst dich Bits & Bäume kennen zu lernen? Komm beim Tägliches Meetup zum Austausch und Vernetzen zu Themen globaler Gerechtigkeit und Digitaler Selbstbestimmtheit.
Lucas Werkmeister
An introduction to Wikidata, the free knowledge base.
Julius Tens, Volker Krause, Jonah Brüchert
This is a meetup for people interested in the Transitous project, including but not limited to users, developers and contributors.
Lucas Werkmeister
In this presentation, we’ll take a quick look at lots of different applications that use Wikidata data.
Tommi
Most people and organizations have their very own way of acquiring, organizing, archiving, sharing, and collaborating on knowledge repositories. A broad spectrum of opinions and approaches resulted in a diverse and rich ecosystem of knowledge management solutions. Nevertheless, this also implies scattered and disconnected knowledge sources. What would it mean to build bridges among wikis and federate knowledge?
Anke Holst
WhatsApp groups have become the default tool for coordinating anything. Also, WhatsApp groups are terrible. We all have stories. From an architectural point of view, they are terrible because the least configurable platform. There is a 1 and a 0 - you are a member of a group and get every message, or you are not a member and get no message. We used to have tools that worked better. Every forum built on free forum software would work better. The problem is - everyone who hears "we should organise" immediately imagines a WhatsApp group. There is knowledge out there about how to build tools and help people organise through them - but we have no language. I am proposing Collaboration Architecture. What do we think?
pnrd
Lasst uns gemeinsam eine Welt nach euren Vorstellungen bauen!
w1ntermute
Come and disclose your privacy related holes to your nearest DPA. I will take your inquiry so you don't have to provide the information over the website or per mail. I can also show you where is the best place to disclose. Either I can take it or forward it to the next best DPA.
Deri-vative
monsterchen
Nerds spielen Spiele
Elektrobausteine/Electric circuits with building blocks
Pascal4F
Wir sind vom Nebelhorn Podcast der Scientists for Future in Hamburg und führen in unregelmäßigen Abständen Interviews, meist zu Klima und Gesellschaft. Je nach Gelegenheit werden wir auf dem 39c3 ein kleines Interview oder eine Hinter-den-Kulissen Sonderfolge aufnehmen. https://nebelhorn.podigee.io/
Volker
Die **Sicherheits_lücke** (https://sicherheitsluecke.fm) greift aktuelle Ereignisse und Trends der Cybersecurity auf. Im Podcast werden die Themen - gerne auch mal humoristisch, sarkastisch oder selbstironisch - von Volker Skwarek, Monina Schwarz und Ingo Timm mit Tiefgang aufbereitet. Mit dem Format **live** ist der Podcast auch regelmäßig auf Kongressen zu finden und diskutiert interessante Vorträge mit ausgewählten Gästen.