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Chaos Computer Club - recent events feed

Der Chaos Computer Club ist die größte europäische Hackervereinigung, und seit über 25 Jahren Vermittler im Spannungsfeld technischer und sozialer Entwicklungen.

technology

All Episodes

00:18:55

Race conditions, transactions and free parking (WHY2025)

Chaos Computer Club - recent events feed ·

2025/08/10

ORM's and/or developers don't understand databases, transactions, or concurrency. After the [Air France-KLM dataleak](https://media.ccc.de/v/37c3-lightningtalks-58027-air-france-klm-6-char-short-code) I kept repeating this was not a real hack, and confessed I always wanted to hack a system based on triggering race conditions because the lack of proper transactions. This was way easier than expected. In this talk I will show how just adding `$ seq 0 9 | xargs -I@ -P10 ..` can break some systems, and

00:27:04

Bare metal programming from the ground up (WHY2025)

Chaos Computer Club - recent events feed ·

2025/08/10

So you have a new microcontroller, how do you get started programming it? This is going to be the talk I wished already existed when I first got into microcontroller programming. Getting started with a new microcontroller can be daunting. They do come with datasheets, but these are often hundreds if not thousands of pages long and assume you already know the basics. So that's what I will be explaining: how to get started programming these thing, from `Reset_Handler` to blinking LED. This talk

00:43:34

Kubernetes from Scratch, The Hard Way (WHY2025)

Chaos Computer Club - recent events feed ·

2025/08/10

To understand the inner workings of Kubernetes and to prepare for the K8s certification exams, I decided to create a K8s cluster from scratch, the hard way, on premises (“de meterkast”) on virtual machines all using Alpine Linux. This talk is how I tried to do it, how I succeeded, failed and added a CEPH cluster and ETCD cluster along the way. It includes a lot of technical details, but if there is one thing that you should learn during this talk, it’s not about K8s at all: Containers are not

00:47:38

Hack the Grid. Disclosing vulnerabilities to help...

Chaos Computer Club - recent events feed ·

2025/08/10

The European electricity network has become a ‘smart grid.’ This offers many opportunities for sustainability but also makes our energy system more vulnerable to digital attacks. DIVD has been conducting research into vulnerabilities in charging stations, solar panel inverters, home batteries, and Energy Management Systems. In this talk, we will demonstrate how we could have generated power outages using these zero-days and how we prevent this by disclosing them responsibly. The European

00:40:43

Fruit machines: How people steal from them and...

Chaos Computer Club - recent events feed ·

2025/08/10

Fruit machines are everywhere.....and they contain cash. This is a talk about the efforts people go to to steal cash from the machines, and what can go wrong when the engineers creating them make mistakes. I've been working with fruit machines as a software engineer for over 30 years, primarily on system platforms and machine security. This talk gives an insight into some of the physical techniques thieves have developed over the years to steal cash from machines, and the catastrophic consequences

00:25:07

Challenge the Cyber (WHY2025)

Chaos Computer Club - recent events feed ·

2025/08/10

Challenge the Cyber is a foundation that actively fosters security skills in young hackers (<25 y). In this talk a couple of our (former) participants will share their experience and talk about the varieties of events that the foundation runs throughout the year and how you can prepare and participate. This includes the yearly CTF, a Cyber bootcamp, recurring training events with CTF team Superflat and the participation at the European Cybersecurity Challenge. There's an overall shortage of cyber

01:25:59

Het Grote Cyber Debat (WHY2025)

Chaos Computer Club - recent events feed ·

2025/08/10

De Tweede Kamerverkiezingen komen eraan en de digitale vraagstukken liggen op tafel. Wat moet het volgende kabinet doen op het gebied van cyberveiligheid, AI, privacy en digitale autonomie? Welke keuzes zijn écht nodig, en wie durft ze te maken? Tijdens WHY2025 organiseren we Het Grote Cyber Debat waar politici het gesprek aangaan met de mensen die dagelijks aan de knoppen zitten: ethische hackers, open source-ontwikkelaars, securityprofessionals en AI-tinkerers. Scherpe vragen en eerlijke

00:29:25

Synology Disk Station Manager (DSM) - the good, the...

Chaos Computer Club - recent events feed ·

2025/08/10

In this WHY2025 session, Mischa van Geelen from Anovum will walk through his recent dive into Synology’s Disk Station Manager. After months inside the software, he surfaced with a mix of intriguing discoveries and a few findings that raise eyebrows. Without getting lost in technical weeds, the talk sketches DSM’s inner logic, hints at overlooked traces, and shows how a sharper view of the platform can flip a “nothing here” scenario into a solid lead. Expect a pragmatic tour of what’s possible. In

00:25:41

Is AI for the birds? The beauty of backyard birdsong...

Chaos Computer Club - recent events feed ·

2025/08/10

Birdsong is all around us, but is there a deeper meaning? Can computer analysis help us decipher these hidden patterns in our own backyards? This talk charts my journey exploring the world of open source projects for bird (and bat!) audio identification, some of the systems I've operated, and the data art pieces I've created from the results. From the science of birdsong, to machine learning models and data visualization, there's something for every hacker to be inspired by. - How birds sing,

00:25:41

Open Source Imaging & Open Source Standard Hardware...

Chaos Computer Club - recent events feed ·

2025/08/10

We developed an open-source low-field MRI and got the clinical certification started! The aim is to create a reference technology for healthcare – which comes with its own complex questions. The Open Source Imaging Initiative has developed an open-source low-field MRI – and is now working on the clinical certification for it (+will open-source it as far as legally possible)! This started raising some discussions around the costs and patenting-schemes in public healthcare. But what about the rest of

00:49:15

Securing AI requires life cycle thinking and reducing...

Chaos Computer Club - recent events feed ·

2025/08/10

AI is everywhere and where it isn't today, it most likely will be tomorrow. But jumping on the hype train and adding AI often does not sufficiently consider security. This talk walks you through cases of AI failures, how they've come about, and how they could have been avoided. We're also going over some projections of spectacular AI failures we're likely to see going forward. AI is everywhere and where it isn't today, it most likely will be tomorrow. But hype does not sufficiently consider

00:52:08

Quantum cryptography and its certification against...

Chaos Computer Club - recent events feed ·

2025/08/10

I briefly explain quantum cryptography. It is unbreakable in principle, but its real implementations have vulnerabilities arising from equipment imperfections. Certification standards [1] and accredited labs are being established that can test commercial products for these flaws. I explain how we have analysed a commercial quantum key distribution system for loopholes, patched them, and designed tests for the certification lab [2]. [1] ISO/IEC 23837-2:2023(en) international standard. [2] V. Makarov

00:50:26

PLOT4AI 2.0: Open source Threat Modeling for...

Chaos Computer Club - recent events feed ·

2025/08/10

PLOT4AI 2.0 is a pioneering open source AI threat modeling tool that provides a structured, lifecycle-based approach to AI risk identification. With over 100 AI-specific risk sources across eight categories, it aligns with the EU AI Act and supports trustworthy AI development and deployment. In this talk, the author will present the story of this internationally recognized tool, first published in 2022, and will introduce its new, expanded 2.0 version. More info @ https://plot4.ai/ After three

00:42:31

Ctrl+Alt+Delete Anxiety; a guide to mental wellness...

Chaos Computer Club - recent events feed ·

2025/08/10

From (political) climate change to people marrying AI chatbots. The world can be a scary place. This talk will be a comprehensive guide to anxiety. We’ll go through the basics of neuroscience and **causes of anxiety**, look at **the effects of the neurodivergent brain on anxiety** and you will be provided with **tools backed by science to implement directly into your daily life!** You might feel tension in your chest when preparing a presentation, or a funny feeling in your stomach when you know

00:50:03

Robotics Hello World, a.k.a build your own hexapod...

Chaos Computer Club - recent events feed ·

2025/08/10

As tinker and software geek robotics is a brilliant field. Finally a field that combines the beautiful creations coming out of your FDM printer and the results of multiple cups of coffee turned into (almost) working software. However where do you get started and how does it actually work? This talk is about all these questions and the corresponding answers that I found during my journey to build my first hexapod robot. From designs to simulation, custom pcbs to finally a walking robot. I'm by no

00:48:30

Dutch fun! (damentals) (WHY2025)

Chaos Computer Club - recent events feed ·

2025/08/10

This is an English spoken talk about the Dutch language, from a Dutch linguist's point of view. Some grammar and quirks of the language are illustrated using theory and examples, as well as a small "bluff your way into Dutch" The inspiration for this talk comes from my background as a general linguist and current work as a teacher of Dutch as a foreign language. Eveybody with an interest in the Dutch language is welcome to join. Licensed to the public under

00:48:32

Flattening the Curve: Rediscovering Web UI Through...

Chaos Computer Club - recent events feed ·

2025/08/10

Modern UI/UX design is rooted in centuries-old geometry. This talk explores how historic tools—from Greek constructions to Bézier curves— is still broadly used to solve real problems today. Through demos and visual examples, we’ll uncover practical, eye-opening methods that blend math, art, and design. No technical background needed—just curiosity. Prepare to rethink how we build and understand the visual world. Modern UI/UX design is built upon concepts much older than computers. This talk

00:29:00

FreeSewing: sewing patterns in the open source world...

Chaos Computer Club - recent events feed ·

2025/08/10

FreeSewing is the leading open-source library for parametric sewing patterns and combines sewing patterns with code; instead of drafting patterns on paper (hardly an easy task!), you can now enter the measurements of your body into the platform to get a sewing pattern that fits YOU. In this talk, I will introduce you to FreeSewing, the sewing world as a whole and FreeSewing's role in it, and I will show a peek under the hood of a FreeSewing pattern. If you want to learn how to sew, you must first

00:50:15

Sensible Money: Designing a Sustainable Economy...

Chaos Computer Club - recent events feed ·

2025/08/10

Economic models are increasingly challenged for destroying our planet. But it is not easy to design a sustainable alternative. In a follow-up on my OHM talk "hacking for bankers", I would like to present a few realistic currencies that we can use to move away from the unsustainable path that we are currently walking. We could build a profitable yet sustainable grassroots movement. At OHM2013 I gave a talk entitled _Hacking for Bankers_ where I explained the perverse motives in the present

00:38:39

Reinventing woodwind instuments (WHY2025)

Chaos Computer Club - recent events feed ·

2025/08/10

Experimental archeology to understand the development of woodwind instruments. What I learned about woodwind instruments by using a spoon drill to make a bore and a whip lathe to reinvent medieval woodturning. I will discuss cylindrical and conical bores, why they are different in a musical sense and why the technology of the times favours one over the other. I will also link some peculiar instruments to the medieval education system of the guilds. The famous leather archeologist Olaf Goubitz

1,910 results

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