Chaos Computer Club - archive feed

Kurze Erklärung wie DNA bzw Phosphoramiditsynthese funktioniert. DNA ist der code des Lebens. Theoretisch kann jeder im Labor DNA synthetisieren. Die Technik dahinter heißt Phosphoramidit-Synthese und ist auch für Informatiker spannend. about this event: https://pretalx.c3voc.de/camp2023/talk/3YQS3E/

Politik und Verwaltung sind auf kompakte Informationen angewiesen. Ist die Wirklichkeit zu komplex, so wird sie auf Indikatoren reduziert. Dieser Talk beleuchtet den Digitalisierungsprozess am Beispiel des "Monitoring häufiger Brutvögel", dessen Zahlen in Indikatoren auf Bundes- und EU-Ebene eingehen. Die Erfassung von Rohdaten im Gelände war lange Handarbeit, seit letztem Jahr läuft sie fast auto...

We've all been there, we knocked a company offline while doing some well intended security testing. How many requests per second is considered ethical? How deep into a system can you go, dump the database or not? Reverse shell or touch /tmp/pwned? What are YOUR ethical boundaries? What is ethical? and why? Is buying credentials of the dark web ethical? Is fuzzing a server in a broom closet with mi...

Feministische und dekoloniale Kritik liberaler Sichten auf digitale TechnologienBeschreibung: In den jüngeren Debatten um die Regulierung digitaler Technologien kommen überwiegend liberale gesellschaftspolitische Weltbilder zum Tragen. Der Vortrag widmet sich im Gegensatz dazu mit fundierten systemkritischen Perspektiven auf digitale Technologien. Ausgehend von feministischen und dekolonialen Pers...

Hear about our adventure setting up the [Labitat Internet Exchange (LabIX)](https://ix.labitat.dk/) in Copenhagen. Many nice FOSS tools for network routing exist, but we found that technical details on IXPs are not as easily searchable and available as one would like. We will show how PeeringDB and a route server ([AS60247](https://as60247.peeringdb.com/)) help connecting our peers and which BGP f...

Meshenger is a P2P Android phone app that started out as a demo for community mesh networks. Meshenger started out as an idea to promote off the grid mesh networks and has now reached its initial goal. In this talk I will talk about the idea behind it, the story how it came to be and of course how it works. about this event: https://pretalx.c3voc.de/camp2023/talk/9XPJNG/

Leyer talks to the Internet-Manufakur aka "Network Operation Center" about their work. This time he is actually told 3 minutes before that its broadcasted LIVE – but it does not really matter to him anymore. about this event: https://pretalx.c3voc.de/camp2023/talk/camp20231989/

This talk offers an overview about difficulties when learning programming for Non-English-Speakers or at least not native English speakers. After the introduction there will be a live demo of some multilingual programming languages and an explanation how to define functions in different programming languages. about this event: https://pretalx.c3voc.de/camp2023/talk/Z8T9HD/

In this talk we will discuss the radio jailbreaking journey that enabled us to perform the first public disclosure and security analysis of the proprietary cryptography used in TETRA (Terrestrial Trunked Radio): a European standard for trunked radio globally used by government agencies, police, prisons, emergency services and military operators. Besides governemental applications, TETRA is also wi...

Today, Information & Communications Technology accounts for 2-3% of global CO2 emissions, on a par with the aviation industry. If nothing changes, by 2050 it's estimated this number will rise to over 30%. Often overlooked is the crucial role of software. It is software which determines hardware's energy consumption, and for how long devices remain in use. That software design can drive environment...

Leena Simon liest aus ihrem Buch "Digitale Mündigkeit" und erklärt, weshalb wir damit die Welt retten könnten. Digitalisierung öffnet uns ein Meer an Zukunftsmöglichkeiten. Gleichzeitig verschließen wir oft die Augen vor den Untiefen und Risiken der technischen Entwicklungen: Social Media verhilft Populisten zum Wahlsieg, Algorithmen befeuern die Spaltung der Gesellschaft, Technik bevormundet uns...

An Oblivious Pseudo-Random Function (OPRF) is versatile cryptographic primitive which is the basis for a wide range of protocols and tools. They enable one to outsource randomness computations to another party without having to trust them or make any compromises in confidentiality of the inputs. The most common benefit of using an OPRF, is that it adds strong privacy guarantees to protocols. A wel...

A short session for even shorter talks. Language: English or German -- german -- Du willst was sagen? Das Podium gehört dir. 10 Minuten hast du, dann wird gewechselt. Ein kurzer Vortrag über die Aerodynamik von Enten, Werbung für dein neues Open-Source-Projekt, ein kleiner Hack den du neulich entdeckt hast, gesellschaftliche Kommentare ... alles geht. Zur Verfügung stehen Mikrophon, Beamer und ein...

Come to play the Game of All Games! You will want to tell everybody about it once you’ve played it! Come to play the Game of All Games! You will want to tell everybody about it once you’ve played it! Nomic is a game where every move is to change the game itself. Nomic gives you a first-hand experience of the glory and frustration of democracy, the tricks of lobbyism, the paradox of self-amendment...

In this presentation, I will talk about how DDoS attacks were carried out generally in the last 11 years and how they innovated since then; I will also present more specific details about attacks against government websites from bundestag.de in 2012 to ukraine-wiederaufbauen.de and others in February - August 2023. This talk aims to also entertain but mostly educate on how to mitigate current atta...

Frag die Teams about this event: https://pretalx.c3voc.de/camp2023/talk/7937/

Post, Himmel, Züge und Wetter about this event: https://pretalx.c3voc.de/camp2023/talk/JKAVHL/

Flutter is a software development kit based on the Dart language enabling developers to create performant cross-platform applications. We'll have an introduction for people with some basic knowledge of Flutter or other cross-platform tool kits and later on a view on advanced topics. In this talk, we will have a look on performance-tuning, useful features as well as some background information on t...

Last year, we released FirmWire to the public, an open-source baseband analysis platform. But what even is a baseband and why do we want to analyze it? Hint: It’s a critical part of your phone and a first point of entry for attacks. This talk will answer your questions and provide a hands-on introduction to our framework. This talk will discuss cellular basebands and FirmWire, our open-source plat...

A deep dive explaining the Mach-O executable format along side a code demo. Apple systems can be quite obscure and archaic considering how popular and ubiquitous their devices are. Learning more about apple systems for any purpose therefore requires a healthy amount of reverse engineering. A core part of reverse engineering Apple systems is understanding the Mach-O file format which is how all App...

In this talk, we take a first look at the tool mitmproxy. We will use it for interacting with network traffic on an Android phone. Sniffing into network traffic can be really interesting. It can help you understand complex systems better, double-check the data you sent or just finding bugs in your apps. The tool mitmproxy helps you with all of that. In this talk, we take our first look on this int...

**Tri-tra-trallala der Roller steht jetzt nicht mehr da.** Wir veranstalten ein original Wiener `Kasperltheater` zum Thema `Leihroller hacken`. English subtitles available. CCCasperl und Pezi finden einen kaputten `Leihroller` im Wald und beschliessen das Ding zu zerlegen. Sie finden dabei nicht nur heraus wie das Alles ganz genau funktioniert, und was man braucht um so einen Roller wieder zum rol...

Gesichter-Suchmaschinen wie Clearview AI und Pimeyes sammeln Milliarden von Fotos im Internet. Mit den Bildern füttern sie ihren biometrischen Suchindex, um uns alle immer und überall identifizierbar zu machen. Eigentlich sollte die DSGVO diesen Überwachungsmonstern Steine in den Weg legen. Praktisch tut sie das aber kaum. Gemeinsam verlangen wir Datenauskünfte von solchen Firmen und bereiten Besc...

The high number of IT security incidents in recent years shows that any institution can be caught out - regardless of whether it is an enterprise, a university, or a hospital. The attackers' methods are often similar and can be prevented by taking appropriate measures. But how exactly does such an attack typically take place? How do I protect my company against it? And what happens if it's too lat...

Wie es Gelingen kann, das Fediverse und seine Infrastruktur durch den Aufbau kleiner Firmen zu fördern und zu stabilisieren. Spätestens mit der Gründung einer Mastodon-Instanz durch Mozilla ist das Thema Professionalisierung im Fediverse in aller Munde, und mit Meta macht sich gerade ein weiterer großer Akteur mit viel Geld bereit, das Fediverse nach seinen Spielregeln zu beeinflussen. Weder der e...