Chaos Computer Club - archive feed

The complete story of Project Blinkenlights: achievements, failures, technology and its cultural impact In 2001, the Chaos Computer Club surprised the world with a simple but impressive interactive light installation on a building in the heart of Berlin: Blinkenlights illuminated 144 windows forming a huge but low-resolution pixel matrix on the facade of House of the Teacher at Alexanderplatz. But...

Chaos Family Cadus e. V. about this event: https://pretalx.c3voc.de/camp2023/talk/1668/

In this talk Holger Levsen will give an overview about reproducible builds, the past, the presence and the future. How it started with a small BoF at DebConf13 (and before), how it grew from being a Debian effort to something many projects work on together, until in 2021 it was mentioned in an executive order of the president of the United States. And of course the talk will not end there but rath...

Exploration of the sensor hardware and programming of the flow3r badge. In particular the pressure sensor BMP581 and acceleration/gyrometer BMI270. I will give a quick introduction into the Bosch MEMS technology and sensors. Next I want to show some very basic steps how to use MicroPython on flow3r to play with LEDs and sensors. about this event: https://pretalx.c3voc.de/camp2023/talk/Z3CPTN/

Dass wir bald von Superintelligenzen beherrscht werden, die wie ChatGPT Texte generieren, ist unwahrscheinlich. Aber es gibt offene Fragen: zu Wissensgerechtigkeit, Teilhabe und Monopolisierung durch Konzerne. Künstliche Intelligenz ist eine Projektionsfläche. Jetzt wird alles anders! Dabei ist die Beschäftigung damit, wie Maschinen Aufgaben erledigen, von denen wir bisher dachten, dass sie nur Me...

16 years after the international Hackspace revolution, we are finding ourself in the midst of a global crisis with a search for answers. At Bio-Hack-Spaces we create mycelium based build materials, research new ways of growing (or foraging) our own food, build technological bridges to nudge nature in our desired direction or tinker on devices that help us to better understand our surroundings. 16...

Menschen Fahren aus der Stadt aufs Land. Da fährt (sonntags) kein Bus, deshalb bringen sie ihr Auto mit. Dieser Talk erklärt, wie man vermeidet, dass der Ausflug ins Grüne zum Fiasko wird und wie sich auf dem Land der Strassenverkehr von Staedten unterscheidet. about this event: https://pretalx.c3voc.de/camp2023/talk/VYGPCZ/

Chaos Family Jugend Hackt about this event: https://pretalx.c3voc.de/camp2023/talk/2648/

Passwords suck, Multi Factor Authentication is hip, everyone wants to use it, but most methods rely on some kind of generated One-Time passcode, which are as vulnerable to phishing as the passwords they should help protect. Other possible factors, like app-based authentication also bring similar design flaws to the table A good alternative to insecure factors is the FIDO2 Standard, also sometimes...

Sometimes Windows can't be avoided, usually to run or dissect some weird piece of software. Fortunately, we have virtual machines for that, but installing or maintaining such an image is always a hassle. I built a web-tool based on open-source tools to make the experience of building such images much more enjoyable and discovered some interesting quirks and ways to run and install Windows. about t...

The energy consumption of datacenters is increasing exponentially. Local community heating is required to heat houses. The talk will give an overview of the existing problems and examples how data centers can be integrated into green power generation to heating concepts producing data center services en passant. 3% of global electricity consumption today and are projected to touch 4% by 2030. The...

Microcontrollers are used in numerous applications and even in security-relevant areas, for example in form of hardware security tokens or crypto wallets. Hence, the non-volatile flash memory of microcontrollers contains sensitive assets such as cryptographic secrets or intellectual property, that need to be protected from being read out by adversaries. In order to prevent illegal extraction throu...

Major states/cities in India have metro railway system for easy commute. The technology, _however_, has been exploited for a long period of time. I'll go through what's wrong with current system and how to make profit (free travel, I mean) out of it. The talk is majorly about NFC (majorly, MiFare DESFire EV1 cards & classic cards). Keep in mind that this is not a NFC 101. I barely understand NFC d...

. Frag die Teams about this event: https://pretalx.c3voc.de/camp2023/talk/2381/

. about this event: https://pretalx.c3voc.de/camp2023/talk/B7YFEV/

Our environment is full of technologies, connected objects and other gadgets that make our daily life much easier. It is indeed, quite easy to remotely command all kind of devices from our smartphones, with a single click. These technologies are also very efficient to help compensate certain handicaps but they have limits when it regards people whose handicap – or combination thereof - prevents th...

Climate change is one of our biggest challenges, and therefore the way we get our power has to change: The newest revision of the Netzentwicklungsplan constitutes for a large amount of additional renewables and our power grid will undergo a transformation. A greater interconnection is needed to efficiently use these resources, but what will happen in case of an error, false values or even an adver...

Die offizielle "Hacken, Dass?!"-Aftershowparty mit säuberlich kuratierter Bar. Das Pflichtprogramm für alle Fans! about this event: https://pretalx.c3voc.de/camp2023/talk/KLVEKE/

Exactly 5 years ago we were presenting ways to hack and root vacuum robots. Since then, many things have changed. Back then we were looking into ways to use the robots' "dumb" sensors to spy on the user (e.g. by using the ultrasonic sensor). But all our predictions were exceeded by the reality: today's robots bring multiple cameras and microphones with them. AI is used to detect objects and rooms....

Nachhaltige Kryptographische Sicherheit stellt insbesondere für stromsparende Hardware eine Reihe von Herausforderungen dar. Für Lösungen mit langer Einsatzzeit müssen heute auch die Sicherheit gegen Quantencomputer Berücksichtigung finden. Hashbasierte Signaturlösungen für den Raspberry Pi Pico ermöglichen beispielsweise Sensorlösungen, welche für Jahrzehnte kryptographische Sicherheit mit stroms...

Chaos-Gala auf dem Camp. Stecker mit dem Radlader crimpen? Prozessoren am Geruch erkennen? Telefonnummern anhand des DTMF-Geräuschs hören? Mit Show-Acts und Triple-C-Promis auf der Couch. about this event: https://pretalx.c3voc.de/camp2023/talk/83HPJY/

Die Deutsche Post DHL Group erhielt von Digitalcourage den BigBrotherAward 2023 in der Kategorie Verbraucherschutz für praktizierten Digitalzwang. Rena Tangens erzählt etwas zu den Beweggründen, aber vor Allem darüber, welch schräge Sachen sich danach ereignet haben. Die BigBrotherAwards prämieren Datensünder in Wirtschaft und Politik und werden einmal im Jahr verliehen. Als Preisträger eines solc...

Hardware is hard, right? Wrong. Building electronics prototypes has never been easier, and people who have been afraid to do it have nothing to fear. I'll tell you about how I build fancy high end devices with minimal, extremely cheap equipment, how it all works, and how you can do it too. We'll find out how to trick your body into making your hands not shake. We'll look at reflow soldering, the w...

Debugging and Profiling ARM Cortex-M microcontrollers with GDB and Python. This talk gives you an overview of debugging ARM Cortex-M microcontrollers with a focus on the *practical* configuration and usage of the relevant tools. In particular, I will present: - Debug interfaces ([SWD](https://developer.arm.com/documentation/ihi0031/a/The-Serial-Wire-Debug-Port--SW-DP-)) and the associated debug pr...

The climate catastrophe is imminent and global injustice is rising. Now a lot of new digital tech (AI, blockchain, big data, quantum computing) is supposed to help the transition to a sustainable society. Although some of them can actually help with parts of the transition, they are usually discussed not as tools to assist the broader societal change (economic, legal, social, political changes) bu...