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Life on Hold: What Does True Solidarity Look Like Beyond Duldung, Camps, Deportation, and Payment Cards? (39c3)
Lager, Duldung, Bezahlkarte, Essensscheine – Criminalization, Radicalization, Reality for Many People in East Germany This talk sheds light on how these terms shape everyday life. We dive into an existence marked by uncertainty, isolation, and psychological strain, both in anonymous big cities and rural areas of East Germany. We ask: What does “solidarity” really mean in this context? In this session, people share everyday experiences with a system that often systematically undermines human rights and dignity. We don’t just talk about the obvious obstacles like the payment card or residency obligation, but also the invisible wounds: the...
The Eyes of Photon Science: Imaging, Simulation and the Quest to Make the Invisible Visible (39c3)
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...
Escaping Containment: A Security Analysis of FreeBSD Jails (39c3)
FreeBSD’s jail mechanism promises strong isolation—but how strong is it really? In this talk, we explore what it takes to escape a compromised FreeBSD jail by auditing the kernel’s attack surface, identifying dozens of vulnerabilities across exposed subsystems, and developing practical proof-of-concept exploits. We’ll share our findings, demo some real escapes, and discuss what they reveal about the challenges of maintaining robust OS isolation. FreeBSD’s jail feature is one of the oldest and most mature OS-level isolation mechanisms in use today, powering hosting environments, container frameworks, and security sandboxes. But as with any large and evolving...
1965 + 60 Years of Algorithmic Art with Computers (39c3)
What power structures are inherent to the field of computer-generated art? In the year 1965, so 60 years ago, the first three exhibitions of art created with the help of computers took place - in part independently of each other. We want to present the interesting aspects of developments since then and discuss them with Frieder Nake, one of the people who exhibited in those very beginnings and followed those developments with a critical attitude. We want to look at the complex topic of art created with computers, beginning with some careful and barely noticed...
Syncing visuals and stage lights against the beat of live music: an introduction (39c3)
Most clubs and concerts have predefined light and visuals, and often they are generic and not synced to the beat of the music. Today we will show you that it's actually possible to sync visual effects to the beat of live music recorded from the microphone, and it's pretty easy! Aimed at beginners. We will teach people how to set up and use TouchDesigner to perform audio analysis and how to draw basic effects and light shows that respond to the beat of the input audio. If you want to follow along, please come with ...
Pwn2Roll: Who Needs a 595€ Remote When You Have wheelchair.py? (39c3)
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. This talk depicts the reverse engineering of a popular electric wheelchair drive system - the Alber...
ChaosPager: Teste unsere Pager‑Infrastruktur!
Du findest Pager toll? Dich interessiert, wie man eine kritische Infrastruktur konzipiert, oder du möchtest solche Systeme am 39C3 kennenlernen? Du suchst einen einfachen Einstieg in die Welt des Amateurfunks?
Wir vom Assembly Signalspielplatz entwickeln und betreiben in Kooperation mit dem CERT und der Funkergruppe DL0TUH eine Pagerinfrastruktur, die in Zukunft die Einsatzkräfte des CERTs alarmieren soll. Um diese zu erpoben, würden wir uns über viele Testaussendungen von euch freuen!
Nachrichten empfangenWir betreiben unser System auf 439.9875MHz. Folgende RICs stellen wir für euch bereit:
RIC Beschreibung 8 Sender-ID (DL0TUH) 1111 Info 1122 Tests 1140 Event-Info Saal Zero 1141 Event-Info Saal One 1142 Event-Info Saal Ground 1143 Event-Info Saal Fuse 1150 Event-Info alle Säle 2504 Datum & Zeit (Skyper)Bitte beachtet, dass wir im...
39C3: Telefonie
TL;DR Registrierung geöffnet – registriere deine Nummer im Guru3 Vergiss dein Telefon (ISDN, DECT, GSM, SIP) nicht Denk an Akkus, Ladekabel und CCC-SIM-Karte Es wird eSIMs für das GSM Netz geben Die Einwahl von außen lautet: +49 40 5730830 xxxx
Der Aufbau für den 39C3 ist bereits im vollen Gange. Ihr habt schon mehr als 5.600 Nebenstellen registriert. Unsere Vorfreude ist sehr groß. Wir möchten euch gerne über die Telefonie auf dem 39C3 informieren und haben die folgenden Details zu allen Technologien, mit denen ihr am Telefonnetz des Congress teilnehmen könnt, zusammengestellt. Wie im letzten Jahr wird es wieder einen Phone-Helpdesk geben, der euch bei...
GNUnet 0.26.2
GNUnet 0.26.2
This is a bugfix release for gnunet 0.26.1. It fixes some regressions and minor bugs.
Links Tarball download (tar.gz) ( signature )
You can find a detailed list of changes in...
39C3: Congress Everywhere
Auch in diesem Jahr bieten wieder Hackspaces und andere Orte die Möglichkeit, gemeinsam Vorträge zu streamen, zu hacken, Party zu machen und mehr. Der Congress ist überall, wo er gelebt wird. Dabei gibt es auch die Möglichkeit, sich gegenseitig zu besuchen.
Diese Congress-Everywhere-Orte sind uns bekannt:
Ort Veranstalter / Website Tag 1 / 27.12. Tag 2 / 28.12. Tag 3 / 29.12. Tag 4 / 30.12. Aachen CCCAC ab 11:00 ab 11:00 ab 11:00 ab 11:00 Basel (CH) CCC Basel ab 13:00 ab 13:00 ab 13:00 ab 13:00 Berlin berlinCreators e.V. ab 11 Uhr ab 12 Uhr ab 12 Uhr ab 12 Uhr Berlin Näh’n’Nerdcafe im Vetomat ab ca. 13:00 ab ca. 13:00 ab ca. 13:00 ab ca. 13:00 Berlin nGbK ab 11:00 ab 11:00 – – Bielefeld Hackerspace Bielefeld ab 13:37 ab 13:37 ab 13:37 ab 13:37 Bremen CCC HB ab 13:37 ab 13:37 ab 13:37 ab 13:37 Burkhardtsdorf Netz09 ab...