Chaos Computer Club - archive feed

Tired of clothing stores not having your size, or that you're stuck in between sizes? So was Joost de Cock, he didn't - and doesn't - like how clothing stores base their clothing sizes on an imaginary average person; every person has a different body. That got him to found FreeSewing: the open-source platform that translates custom measurements into well-fitting sewing patterns with code. The plat...

Borne out of a semi-flippant Twitter comment, this talk will take you on a journey across the benefits, pitfalls, and outright BS of attribution. Expect passionate opinions, trenchfoot inducing war stories, head+desk frustration, and a strong meme game. With this session, which is aimed at security practitioners, researchers, students, and anyone with an interest in cybersecurity, we hope to: • Hi...

Last April we won Pwn2Own Miami by demonstrating five zero-day attacks against software that is commonly used in the ICS world. ICS, or Industrial Control Systems, are systems that are involved with running an industrial process, for example in a factory or power plant. Our targets range from SCADA to HMI systems. During this talk we would like to share details about the competition and the vulner...

The current digital educational system is dominated by tech giants. Fundamental rights, like the privacy, freedom and sovereignty of children, parents and educators are insufficiently secured. Ed-tech is mainly closed source and full of vendor lockins. Products are either overpriced, harvesting data, or both. The time to replace surveillance capitalist based Ed-tech by ethical open source alternat...

A lack of VoLTE standardisation breaks voice calling globally. Your brand new smartphone may not work because VoLTE is screwed up by manufacturers and carriers. Voice-over-LTE (4G), voice-over-NR (5G) and voice-over-WiFi have been standardized for years, but now that more and more 2G and 3G networks are shut down by operators, users discover their phones don't work anymore with basic voice calling...

The HomeComputerMuseum's idea originated in 2016 and opened the doors in 2018. Since then, we faced several challenges but we came out on the other end and became one of the largest museums about computers with an award-winning social impact, an enormous social network, collaborations over the whole world and even are of essential importance to the Dutch government. The talk is about the original...

Modern electronic locks are often optimized for cost, not security. Or their manufacturers don’t do security research. Or they ignore it. For whatever reason, many current electronic lock systems are susceptible to surprisingly simple attacks. We’ll look at some of them, and at the underlying basics, so that you can do your own research. In this talk, we look at a number of modern electronic locks...

This session will go over my journey to hack the Quincy drawing robot. This is a cheap 3-axis drawing robot, that uses a proprietary "closed" system. I wanted to hack this robot to draw Pokémon's for my son. I will explain how I deciphered the file formats, figured out how the robot could be controlled (which needed some very very difficult math!) and the software I made to create your own drawing...

Ransomware is making a comeback and attacking us all! Learn and sharpen your blades in order to defend against this multi headed monster! There’s a lot to learn from every ransomware attack. By demounting every bit of the attack and looking at every stage there’s much to gain for setting up proper detection and other defence techniques Remember those times when a popup appeared on your screen with...

The Albert Heijn, everyone (in the Netherlands at least) knows it. It's the largest supermarket chains here. They have a very extensive API. This API is not public unfortunately, but in this talk I will show you how you can reverse engineer the app to figure out how the API works and how we can use it to our advantage. The Albert Heijn, everyone (in the Netherlands at least) knows it. It's one of...

SLAPP suits (strategic lawsuits against public participation) are nuisance lawsuits designed to get journalists, activists, historians, whistleblowers and others to keep quiet. This kind of lawfare isn't new, but there is an increasing focus on the issue in Europe, with new legislation coming. Here's where you find out more. You receive a threatening letter from a major law firm, probably based in...

This discussion will start with a brief summary on the history of repair initiatives. We can report about our personal repair activities during the pandemic. Subsequently, I'll outline the achievements of the right to repair movement and we can discuss ideas for the future. During a peak in public interest, the repair café movement was caught by the covid pandemic. Many local initiatives adapted q...

When gathering data for public services becomes privacy infringement and what you as a citizen can do about it. Or: How I made the municipality pay a 600.000 euro fine for invading your privacy. In September 2017 The Municipality of Enschede started tracking visitor movements in the city center 24/7 by registering their mobile phones WIFI MAC addresses. Is this an infringement on our privacy, even...

Stalking is unwanted and/or repeated surveillance by an individual or group toward another person. But what is the impact of tech companies making it easier to do this with the development of technology? In the news, we hear about the increase in stalkerware found on devices or scary government spyware. But it’s not just that, there are so many more common tools used by stalkers. From September 20...

Lightning talks are a 5 to 10 minute quick talk on an interesting subject. They can be with or without slides, and with or without proper preparation. if you weren't accepted in the main CfP, this is also a great opportunity to give an abridged version of your talk. These sessions will be available to sign up to later on, with details on the wiki. Lightning talks are a 5 to 10 minute quick talk on...

From complaining out loud about a televised government app-a-thon to being hired by the Ministry of Health, Welfare and Sport as lead developer RoHS running a team of devs to work on all the covid backend infrastructure exception routes and making sure no person is left in digital limbo in just under an hour. When late 2019 the first signs from China of the novel Corona virus came I was intrigued,...

What are the risks and problems of face search engines like Clearview AI and PimEyes? Since institutional protection against these systems is failing us, how can we protect ourselves against this? Three people involved in the fight against biometric mass surveillance share their experiences and reflections. Come to this talk to exchange experiences, learn what tools there are for your protection,...

Goal is to discuss the gravity of the situation and create shared set of ideas on what is likely coming at us. We will do a Threat Modelling exercise around the climate change topic. Via a collective mind mapping exercise we will create a shared mental model and identify the things that will happen and how they will affect various people at various locations. Goal is to discuss the gravity of the...

Many 5G networks are built in fundamentally new ways, opening new hacking avenues. Mobile networks have so far been monolithic systems from big vendors. Networks are rapidly changing to an "open" model that mixes software from specialized vendors, hosted in cloud environments. The talk dives into the hacking potential of the technologies and new interfaces needed for these open networks. We illust...

Attacks on cyber physical systems are perceived as necessarily complex and requiring significant time and resources. However, in the last couple years we have also observed the inverse: simple attacks where actors with varying levels of skill and few resources gain access to software and interfaces that control physical processes. These compromises appear to be driven by ideological, egotistical,...

Greenpeace is a direct action organisation. We have been doing physical direct civil disobedience actions for 50 years now. Civil disobedience has always played an important part in evolving democratic society if you look for instance at womens’ voting rights, the civil rights movement in the US and de ‘klimaatspijbelaars’. The digital realm is becoming more and more important in all of our lives....

A series of isolated problems encountered when attempting to fuzz software, in this case Adobe Reader (DC), and hackish solutions to said problems. Constructing a fuzzing pipeline capable of finding real bugs by stringing together freely available tools creating the bare minimum of glue. Starting from target selection, moving over requirements for a given fuzzing campaign to smart input generation...

If we consider technology sufficiently advanced indistinguishable from magic, then the closest we get to ancient magical glyphs are barcodes. In this talk, we will show how barcodes are not just simple numbers, but can be used to control the machines. If we consider technology sufficiently advanced indistinguishable from magic, then the closest we get to ancient magical glyphs are barcodes. In thi...

Medical devices come in all shapes and sizes, and a great deal of them contain – or consist of – software. If they are faulty, they can kill. We’ll talk about different types and classes of medical devices, the regulations that try to ensure their safety and what all of this means for medical software projects. So you have a great idea for a medical product with software that will make the world a...

This presentation will includes insights in starting your own online pirate radiostation, the mathematics of bingo cards, keeping participants data up to GDPR standards, Fitbit-statistics, and the optimization of bingo winner-calculations. This presentation will also at one point include a guy in an ice cream cone costume with an offensive name, as well as an optional disco bingo party with songs...