Chaos Computer Club - archive feed

As NGOs continuing searching the Mediterranean by boat and a few planes, it would be good to find additional effective ways to find people in distress in the sea. To be able to search a huge area in the Mediterranean its good to get more eyes in the sky. For this purpose I want to show you and discuss computer-vision approaches to detect refugee boats which are able to run on basic minicomputers (...

Void Linux is a general purpose operating system based on the Linux Kernel. In this talk we'd like to give an introduction about Void, why we think our work matters and talk about the challenges that we were faced during the last year. about this event: https://pretalx.35c3oio.freifunk.space/35c3oio/talk/XCU9PD/

In this talk I'll detail the Nextcloud End-to-end Encryption design, going through the steps of creating the private/public key pair, encrypting and syncing it, encrypting files and uploading them, adding devices to the trusted circle and so on. Nextcloud's E2EE is designed to protect user data from the server. The goal was to let users sync and share folders (and their contents) as easily as poss...

Wir haben im letzten Jahr die Hard und Software des Phone Operation Center fast vollständig ersetzt. Der größte Schritt aus Benutzersicht war, die langen DECT Registrierungsschlangen gegen eine Selbst- oder Auto-Registrierungsfunktion zu tauschen. In einem Vortrag möchten wir zeigen was wir gemacht haben, warum wir agil arbeiten, wie eigentlich ein Minimum Viable Product (MVP) geht, welche Fehler...

Bei diesem Talk stellen wir das Freifunk-IoT Projekt sowie seine Module vor, und zeigen generelle Möglichkeiten auf, das Freifunk-Netz nicht nur als Transitnetz zu verwenden, sondern auch smarte Sensoren einzubinden. Freifunk-IoT ist ein Projekt, welches ein Framework zum Einbinden von offenen Sensoren in Freifunk-Netze entwickelt und anbietet. Es gibt Ressourcen zu Hardware-Modulen wie Anleitunge...

The official start of our orbit. With a keynote and a short introduction of all involved communities. about this event: https://pretalx.35c3oio.freifunk.space/35c3oio/talk/WNDAXJ/

Digitale Formen von Gewalt gegen Frauen sind keine eigenständigen Phänomene, sondern in der Regel Weiterführungen oder Ergänzungen von anderen Gewaltformen. Stalking, Kontrolle, Bedrohung, Erpressung, Beleidigung, Überwachung sind altbekannte Aspekte häuslicher Gewalt. Für alle diese Phänomene gibt es digitale Entsprechungen, allerdings ist wenig darüber bekannt, wie oft sie ausgeübt werden, wann...

Since a few months we have a new version of TLS, the most important encryption protocol on the Internet. From the vulnerabilities that created the need of a new TLS version to the challenges of deploying it due to broken devices this talk will give an overview of the new TLS 1.3. In August the new version 1.3 of the Transport Layer Security (TLS) protocol was released. It‘s the result of a process...

The combination of the ongoing technological revolution, globalisation and what are usually called 'neo-liberal' economic policies has generated a global system of rentier capitalism in which property rights have supplanted free market principles and in which a new global class structure has taken shape. The 20th century income distribution system has broken down irretrievably, and a new mass clas...

Die Hackerethik ist die Grundlage für den Umgang mit den diversen ethischen Problemen, die sich beim schöpferisch-kritischen Umgang mit Technologie (auch "hacking" genannt) stellen. Die Hackerethik ist die Grundlage für den Umgang mit den diversen ethischen Problemen, die sich beim schöpferisch-kritischen Umgang mit Technologie (auch "hacking" genannt) stellen. Sie bietet Anhaltspunkte für die all...

UEFI rootkits have been researched and discussed heavily in the past few years, but sparse evidence has been presented of real campaigns actively trying to compromise systems at this level. Our talk will reveal such a campaign successfully executed by the Sednit group. We will detail the full infection chain showing how Sednit was able to install their custom UEFI module on key targets' computers....

This talk will teach you the fundamentals of machine learning and give you a sneak peek into the internals of the mystical black box. You'll see how crazy powerful neural networks can be and understand why they sometimes fail horribly. Computers that are able to learn on their own. It might have sounded like science-fiction just a decade ago, but we're getting closer and closer with recent advance...

We rely on mainstream computer engineering every day, but it's insanely complex, poorly understood, unreliable, and, as CCC reminds us every year, chronically insecure. This talk will explain some ways that we can do better: taming parts of this this chaos with precise understanding - illustrated with disturbing facts and clean models for current architectures and the C language, from the REMS pro...

Meet SiliVaccine – North Korea's national Anti-Virus solution. SiliVaccine is deployed widely and exclusively in the DPRK, and has been continuously in development by dedicated government teams for over fifteen years. When we heard of this strange software, we were immediately driven to investigate it: it's not every day that you can catch a glimpse of the malware landscape inside the closed...

Von unerwünschten Nachrichten über Bedrohungen bis hin zum Intimizid. Allein im Jahr 2017 wurden rund 18.483 Fälle von Stalking polizeilich erfasst, die Dunkelziffer wird auf 600.000-800.000 Betroffene geschätzt. Unter dem Begriff Stalking wird allgemein das „wiederholte, widerrechtliche Verfolgen und Belästigen eines Menschen, so dass dessen Sicherheit bedroht und er/sie in seiner/ihrer Lebensges...

While a lot of projects are currently developing their own processors, mostly as open source in Verilog, VHDL or even Chisel, we miss the free process that actually manufactures these chips. So we're developing the "Libre Silicon" project, a portable semiconductor manufacturing process and technology, using only free and open source tools: We would like to introduce the project, who we are, what w...

This lecture tells the story of Internet infrastructure transformations in Crimea, the peninsula disputed between Russia and Ukraine between 2014 and 2018. It is based on an extensive year-long study involving network measurements and interviews with key players. Crimea has become a "laboratory" where we can observe, in just 4 years, a rapid and profound transition of infrastructure, that deeply i...

Als Organisation für Menschenrechtsbeobachtungen geben wir Euch einen Überblick der aktuellen Entwicklungen an der EU-Außengrenze auf dem Mittelmeer. Mare Liberum betreibt ein Schiff auf dem Mittelmeer, um Menschenrechtsverletzungen zu dokumentieren. Dabei arbeiten wir zur Zeit in der Ägäis, der Seegrenze zwischen der Türkei und Griechenland. Hier flüchten noch immer tausende Menschen auf der Such...

Encoding or decoding random radio-waveforms doesn't need incredible expensive hardware anymore which offers new possibilities for building up over-the-air communication systems. There are Software Defined Radios providing affordable cellular radio to remote villages, Community Radios are using SDR to build up digital radio networks and other cool stuff. Some basic knowledge what is going on in SDR...

Restricting access to knowledge and science is not beneficial for society. So why are scientific results still locked up behind paywalls? Even though the answer to this question is enlightening, the story is quickly told. Much more important is the knowledge on how to change this. Politics, research funders, libraries and scientists have to join forces and to push forward to flip scholarly communi...

In this presentation we will take a look at how to break the most popular cryptocurrency hardware wallets. We will uncover architectural, physical, hardware, software and firmware vulnerabilities we found including issues that could allow a malicious attacker to gain access to the funds of the wallet. The attacks that we perform against the hardware wallets range from breaking the proprietary boot...

After launching a spacecraft into orbit the actual work for mission control starts. Besides taking care of the position and speed of the spacecraft this includes e.g. detailed modeling of the power usage, planning of ground station contacts, payload operations and dealing with unexpected anomalies. In this talk we will see many examples of problems particular to space crafts and how they influence...

Hier geht es los. about this event: https://fahrplan.events.ccc.de/congress/2018/Fahrplan/events/9985.html

We all know what FAX is, and for some strange reason most of us need to use it from time to time. Hard to believe its 2018, right? But can FAX be something more than a bureaucratic burden? Can it actually be a catastrophic security hole that may be used to compromise your entire network? Come watch our talk and find out … Unless you've been living under a rock for the past 30 years or so, you prob...

Neutrinos are “ghost-like” elementary particles that can literally go through walls. They can bring information from places that are impossible to observe through other means. This talk provides a glimpse behind the scenes of a next-generation neutrino detector called Hyper-Kamiokande – a cylindrical water tank the size of a high-rise building. I will describe some of the problems you encounter wh...