Chaos Computer Club - archive feed

We built an Ethical Hardware Kit with a PCB microcontroller made of wild clay retrieved from the forest in Austria and fired on a bonfire. Our conductive tracks use urban-mined silver and all components are re-used from old electronic devices. The microcontroller can compute different inputs and outputs and is totally open source. It is an open secret that the hardware in our smart devices contain...

End-users in cellular networks are at risk of connecting to fake base stations, and we show that mitigations pushed in 5G are insufficient. Machine-in-the-Middle (MitM) attackers aim to overhear and manipulate network traffic. The MitM position can also be used as an entry point for baseband exploitation. Proceeding from there, attackers can gain full control of a user’s phone. Standardization bod...

Capture The Flag (CTF) für Einsteiger: Wie man legal "hacken" ueben kann, warum man das tun sollte und wo man anfaengt. "Hacken" ist längst nicht mehr nur Hobby. WTF? CTF! Was ist ein "Capture The Flag", wie passt das in die aktuelle Menge aus Security Buzzwords, welchen Nutzen kann ich daraus ziehen und wie fange ich an? Es werden ein paar einfache Plattformen und Veranstaltungen zum starten und...

The European Commission is the executive branch of the European Union with the duty to uphold the law. The transparency of the Commission´s actions and decisions range from questionable to abysmal. Attempts by the public to access information are often thwarted. This talk will cover the Commission´s lack of transparency, challenges faced by the public in accessing information, Commission´s tactics...

Reverse engineering the Wi-Fi peripheral of the ESP32 to build an open source Wi-Fi stack. During the 38c3, there are probably multiple thousands of ESP32s in the CCH, all of which run a closed source Wi-Fi stack. And while that stack works, it would be nicer to have an open source stack, which would grant us the ability to modify and audit the software, which carries potentially sensitive data. S...

Selbstbestimmung ein grundlegendes Prinzip des Hacken, ob technologisch oder geschlechtlich. Doch was wenn Selbstbestimmung nur bedingt umsetzbar ist- im besten Fall und mit staatlicher Repression als Standard? Selbstbestimmung selbst gemacht ist eine trans, inter, nonbinäre Aktionsgruppe deren Name Programm ist. Wir wollen das System hacken um wir selbst zu sein, Überwachungsfrei und mit (Kranken...

In a world of centralized internet control, building your own mesh network isn't just a technical challenge—it's digital independence. This beginner-friendly guide walks through creating resilient mesh networks using accessible hardware like LoRa and ESP devices. From antenna selection to node placement strategy, learn how to build networks that operate independently of traditional infrastructure....

This talk announces the first public release of sixos, a two year project to create a nixpkgs-based operating system using skarnet's s6 supervisor instead of systemd. The monolithic design of `systemd` is inconsistent with the UNIX userspace philosophy. Its our-way-or-fork-off policy attracts influence-seekers, and thereby encourages *platform decay* within the free software ecosystem. Systemd's f...

„Um nach diesem Begriff zu suchen, dich auf dieser Website anzumelden oder dieses Video anzuschauen, halte bitte deinen Personalausweis bereit, damit wir dein Alter überprüfen können.“ Solche Aufforderungen könnten uns in Zukunft häufiger begegnen, denn immer mehr Websites wollen unser Alter wissen. Doch woher kommt dieses Interesse und ist das eigentlich zulässig? Gemeinsam setzen wir die Datensc...

On 23 October 2019 peaceful activist Frank van der Linde found out the Dutch Police was associating him with terrorism to other countries' law enforcement. This talk goes over the bizarre, worrying and, frankly, quite funny journey that Frank van der Linde has embarked on, hoping on a litigation frenzy to seek justice and fight back against the institutional intimidation of activists. In 2014 the...

With the iPhone 15 & iPhone 15 Pro, Apple switched their iPhone to USB-C and introduced a new USB-C controller: The ACE3, a powerful, very custom, TI manufactured chip. But the ACE3 does more than just handle USB power delivery: It's a full microcontroller running a full USB stack connected to some of the internal busses of the device, and is responsible for providing access to JTAG of the applica...

Vor einem Jahr veröffentlichte Correctiv die Recherche “Geheimplan gegen Deutschland”, die ein geheimes Treffen von Rechtsextremen, AfD-Funktionären und CDU-Mitgliedern enthüllte. Diese Enthüllung führte zu massiven Demonstrationen, während rechtsextreme Gruppen versuchten, das Geschehen zu relativieren. Die politische Reaktion blieb jedoch verhalten, und die AfD setzte die demokratischen Parteien...

I'm not big-brained enough to use cameras on Linux, so I decided to write my own camera stack (based on a real story). The libobscura experiment exists to find out what a point-and-shoot API abstracting Video4Linux should look like. It has its roots on one hand in the Librem 5 project, where I wrote some 70% of the camera stack, and on the other hand in libcamera, which I found too difficult to us...

In a world dominated by digital communication and the drive toward linguistic unification, the simple act of 'typing' varies significantly across languages and writing systems. For European languages like English and German, typing typically involves a set of about 100 letters and symbols. In contrast, Japanese—and by extension, Okinawan—requires three distinct scripts: hiragana, katakana, and kan...

Exploring the security of the new iPhone Mirroring feature as well as the current threat model of the iOS ecosystem The tight integration between devices is something you only get in Apple’s Continuity ecosystem. It enables seamless interaction between devices, such as using your iPhone as a webcam for your Mac and even letting an iPad act as a second screen with stylus input. All of this relies o...

Glad you could make it! Take a seat and buckle up for a ride through four days of chaotic adventures. This ceremony will prepare you for the 38C3 in all its glory, underground and above, hacks and trolls, art and radical ideas. Let's kick this thing off together! Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://events.ccc.de/congress/2024/hub/event/...

Team Leads give a short update about the current status of their planning. Licensed to the public under https://creativecommons.org/licenses/by/4.0/ about this event: https://c3voc.de

Ionisierende kosmische Strahlung ist eine der großen Gefahren für Astronauten im Weltall. Wie kann diese nicht spürbare Gefahr gemessen und sichtbar gemacht werden? Zum Mond, zum Mars und darüber hinaus – hochenergetische kosmische Strahlung und Sonnenstürme können Körper und Raumschiff schädigen. Außerhalb des schützenden Magnetfelds und der Atmosphäre der Erde bedeutet die ionisierende Strahlung...

Jeden Tag hinterlassen wir unbewusst Unmengen an Datenspuren. Diese Daten werden laufend durch unterschiedliche Parteien gesammelt, ausgewertet und analysiert. Dies häufig, ohne unser Wissen. Von vielen solcher Auswertungen profitieren wir direkt oder indirekt. Zugleich schlummert in solchen Datenpraktiken aber auch das Potenzial, Menschen oder Gesellschaften negativ zu beeinflussen. Die Ethik bes...

Thank you for joining us for DENOG16, join us for a quick review and some announcements before heading home! Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://pretalx.com/denog16/talk/P8QBJW/

This talk will give an overview of DTs DNS platform and the challenges arising from carrier scale DNS deployments. It will cover the architecture and new requirements as well as scalability and the implementation status and impact of encrypted DNS (e.g., DoH/DoT and DNS discovery). The presentation will also address shortcomings of the new discovery mechanisms which are currently being standardize...

News from IXPs in Germany As introduced 2021 we collect some parameters from all IXPs, which are active in Germany. This talk aggregates the Updates for all the IXPs in a common format and will be presented in a neutral way. Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://pretalx.com/denog16/talk/Y9RMD9/

In this talk, we explore the changes needed to convert a set of fully open source amd64 based VPP routers running in AS8298 to be able to use exactly one IPv4 and IPv6 address in an OSPFv3 and iBGP configuration. The use of /30 or /31 IPv4 transit networks between routers is a thing of the past, paving the way to conserve IPv4 addresses! The talk discusses the changes made to VPP and a popular rou...

Metro networks are arguably one of the more challenging areas in carrier network engineering: Feature creep, space constraints, harsh physical environments and the requirement to deliver all services everywhere, for cheap. At Wobcom AS9136 we _just_ wanted to modernize the transport network. Two years later we ended up redesigning just about everything: Putting white box routers into outdoor shelt...

We had to move a couple of hundred machines from a big Layer 2 broadcast domain into a fully routed network. We also increased the bandwidth available for each server by mounting a new NIC into each server, To avoid synchronisation with service owners, we did not renumber hosts. In addition, there is connectivity to the large Layer 2 domain that is still in place and still has a few thousand hosts...