Chaos Computer Club - archive feed

This workshop is especially for all attendants who are not Dutch natives. In an exact and logical manner I will guide you through the syntax and semantics of the Dutch language, from sounds (the famous 'ggh' and vowel inventory) to gender of nouns and word order. There will be simple illustrations to help you get a grip on the language and bluff your way into pub talk with locals. Please bring pen...

With the support of the Dutch embassy in Tokyo, I have researched Coordinated Vulnerability Disclosure (CVD) in Japan for DIVD. Japan’s governmental policy on CVD dates back to 2004. Although Japanese criminal law and jurisprudence do not allow for large-scale intrusive vulnerability research and disclosure, Japanese institutes help citizens disclose zero days to vendors and report vulnerabilities...

The total number of vulnerabilities continues to rise. If we had to rely on just CVSS for prioritizing those vulnerabilities, we have an enormous hard time to remediate all of them. In this talk, we’ll explore the critical gaps in CVSS-based prioritization and discuss why factors like exploitability, asset criticality, and real-time threat intelligence are way more important. Expect real-world exa...

This talk describes the computer and its interfaces the DSKY (DiSplay-KeYboard) on board the Apollo missions that got us to the moon and back. I will point out several modern sources of information about this historical project and how it entertains lots of people to this day, including several emulation projects. Back in the period 1962 to 1969 the US went on a mission to get people on the moon....

"AiTM: Lessons Learned" dives into the evolving threat of AiTM attacks. Our presentation highlights the transition from basic phishing tactics to sophisticated methods that compromise organizational security. The presentation outlines the journey from oldschool phishing attacks, to phishing framework like UADMIN, and the introduction of tools like Evilginx. And now the SaaS providers allowing anyo...

The Election Council is working on Abacus, the tabulation software for the elections. Come to this workshop to try your hands on the software in a production-like setting and learn more about the choices and concepts behind it. The Election Council is working on Abacus, the tabulation software for the elections. This workshop will show you how it works, in a production style setting involving test...

How to use screenreaders to scan the operatingsystem, building blocks of an application or web-enviroment. How to use screenreaders to scan the operatingsystem, building blocks of an application or web-enviroment. Other topics are: * Reading and analysing logging * Capture a scrolling text * Query of classes etc Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this eve...

I have been struggling with my weight for over 25 years. After reading the book : The Obesity Code" everything clicked. Since I have lost 13 kg within 6 months. The great thing about this is that it is effortless. In this workshop we start with the theory of gaining and loosing weight. After that we are going to look at recipes for individual participants. What works, what doesn't. In the end you...

De opkomst van geavanceerde technologie en kunstmatige intelligentie heeft ongekende mogelijkheden gecreëerd, maar ook een sluimerend probleem blootgelegd: de validatiecrisis. In deze lezing neemt Brenno de Winter, gerenommeerd cybersecurity-expert en auteur van De Validatiecrisis, u mee in de wereld van misleidende aannames, ongeteste technologie, en de gevaren van een gebrek aan kritische evalua...

This you really want to know. Huib has been responsibly disclosing the Secret Services, criminals and hackers. Now we turn it around: ask Huib anything. Chris van ‘t Hof will guide the conversation. Books: 2024 “Dit wil je echt niet weten”, 2019 “Het is oorlog en niemand die het ziet”, “There's a War Going On But No One Can See It” - Its war and everyone can see it now. “Der digitale Weltkrieg, de...

Openingstalk by Dimitri opening Hackerhotel 2025 In this openingstalk i will open Hackerhotel 2025 and thank all people that helped me and explain about how this Hackerhotel 2025 organisation went. Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://pretalx.hackerhotel.nl/2025/talk/EMVMAX/

You've maybee seen the raking robot that got a CEH (Certified Estetisch Harker) certificate, the Telex linked to Twitter/Telegram or the ASCII foto booth. They are all made by me. If this talk gets accepted I will do a deep dive on these three contraptions and what I learned building them. Beside Schuberg Philis, DIVD, attending the farm and keeping my bees I als build machines. It is an interesti...

How to make an Android App for Android Auto, a demo of the MapLibre sample app, and stories about Flitsmeister. FrankkieNL has worked on the Android Auto (and Automotive) version of the Flitsmeister app. This navigation app uses MapLibre to render a map on the Car screen. During this talk, we will discuss how this works and how you can create your own Android Auto-based app. Licensed to the public...

In today's rapidly evolving digital landscape, the increasing frequency and the scale of security incidents pose significant challenges for incident response teams. The traditional approach, rooted in digital forensics, is no longer sufficient nor is it efficient enough. It's time for a shift towards an automated incident response strategy that combines the investigative prowess of a digital detec...

A short introduction to cryptography, its past, present and future for the not yet fully initiated. Many talks mentioned cryptography somewhere along the presentation and everybody just nods. But how many people actually know the insights of cryptography? Why some things work and some things don't? During this talk I will explain the difference between encoding and encryption, the most common uses...

A year later, we are back at the wonderful company Acme where nice people make beautiful things. This time we will follow up on that and tell you how the company can improve their own maturity and security levels as explained in the standard. A year later, we are back at the wonderful company Acme where nice people make beautiful things. How did they fare, and what steps can they take now to prote...

Lockpicking is a sport where you open locks without force and mostly without keys. While doing this activity nothing much can be seen of the actual process. In stead you need to rely on sound and feel (tactile feedback from the lock). Therefor a lot of people (including us) think a visual impaired person could be rather good at this (as they are more trained to use the "other" senses) The firsts s...

Motivationsvortrag über verschiedene Microcontroller und Abstraktionsfähigkeit durch höhere Prorgammiersprachen Assembler->C->Rust, Arduino, STM32, ESP32 https://www.ulm.ccc.de/ccc/chaosseminar/2025_02_embedded-software-entwicklung/ https://wieerwill.dev/ about this event: https://www.ulm.ccc.de/ccc/chaosseminar/2025_02_embedded-software-entwicklung/

🇬🇧 English Version Open Politics – Collaborative Tools for Open Political Data Politics is complex, and making sense of it requires access to good information. The Open Politics Project is working on and operationalising open-source tools that help analyse political structures, decisions, and developments—so that journalists, researchers, activists, and engaged citizens can better understand and i...

Your organisation has been using Puppet to manage its infrastructure, but it's grown organically over time with best practices and the long-term implications of decisions never really being thought about. A new Puppet administrator has just been handed responsibility for the Puppet infrastructure, we need to help them out. This is a common scenario, the Puppet admin has left an organisation and a...

Since the day Kargo was released, I have been exploring the idea of using it not only to deliver and promote applications but also to deliver infrastructure through its progressive delivery capabilities. Using Kubernetes-based tools like Crossplane or Pulumi, we can define infrastructure as code and deliver it progressively to our management clusters and then promote this infrastructure through di...

In this talk, we will introduce Kairos, an open-source project that aims to create immutable Operating Systems designed for Kubernetes. This includes a toolset that simplifies operations at the edge in a cloud-native way. Edge computing has become increasingly popular due to its ability to save costs by processing information closer to the data before sending filtered and computed information to a...

We use Puppet for about 1200 Linux machines. This talk will recount our journey in upgrading from Puppet 7 to Puppet 8. I will talk about the incompatible changes to be aware of, how we handled them, and general strategy for handling Puppet major upgrades. The talk will cover: - our Puppetserver architecture - changes in Puppet 8 like legacy facts and Ruby 3.2 - how to prepare for any Puppet major...

cloud costs can feel like a nightmare, creeping up on your Kubernetes infrastructure. But with the right tools, you can be the hero your budget deserves! In this talk, we’ll dive into OpenCost, an open-source solution that can help you track and optimize your cloud spending in real time. You’ll discover how OpenCost works, why it matters, and how you can use it to become the cost-saving champion o...

This talk will walk through and provide examples and war stories on how kubernetes can be used not only in large scale environments but also in small and small-ish scale environments. Kubernetes is often considered as the tool to tackle large scale traffic, which is supposed to be used by a big team of engineers. This talk presents an opposite approach which shows how Kubernetes can be used in a v...