Chaos Computer Club - archive feed

Sudo is used by millions to control and log administrator access to systems, but using only the default configuration, there are plenty of blind spots. Using the latest features in sudo lets you watch some functions that previously were blind spots and you can also control access to them. There were several minor and major changes since the 1.9.0 release that I discussed in my previous FOSDEM talks. Sudo is used by millions to control and log administrator access to systems, but using only the default configuration, there are plenty of blind spots. Using the latest features in sudo lets you watch some functions that previously were blind spots and you can also control access to them. There were several minor and major changes since the 1.9.0 release that I discussed in my previous FOSDEM talks. about this event: https://c3voc.de

A deep dive into the Windows boot process, its security mechanisms, and the security issues that have been found within the last 10 years, culminating in a single bug (found in August 2021, fixed in January 2022) that can bypass all such security mechanisms. about this event: https://c3voc.de

About four years ago I realised I was miserable and that I should probably do something about that, so I did what any self-respecting nerd would do and read a tonne of books to figure out how emotions worked (I did also go to therapy, but the books were more useful). Life isn't perfect now, but it's a lot better despite the ongoing war and pandemic. I'm going to give you an overview of some of the things I've learned. It will be a mix of theory (what even are emotions?) and practical advice for understanding and engaging with your emotions better, with a pointer towards further reading that will help you act on this advice better. about this event: https://c3voc.de

I run Parkrun (some weeks), and am trying to run the alphabet. While running one week I realised that every parkrun course is the same. They are all basically one of a few mathematical objects, the integers or some pair, tuple or quadruple of integers. We will ask and see why? In this talk I will explore the broad and interesting idea of Topology and present them to a general audience through comedy and one of my other main passions, parkrun. I will use homotopy and related ideas to show how everyday objects and familiar activities are the same to mathematicians and explain why, think coffee cup and donut. about this event: https://c3voc.de

In this talk Emil will go over some of Jitsi's History, what use cases and larger forces drive its development and where it is headed. Looking forward to seeing you there! In this talk Emil will go over some of Jitsi's History, what use cases and larger forces drive its development and where it is headed. Looking forward to seeing you there! about this event: https://c3voc.de

Games controllers are boring. They have the same few buttons in the same place. It doesn't have to be this way. In this talk, I'll go through how I've made controllers that are different and unique. These controllers are quick and easy to make with a microcontroller and Circuit Python, and theycan use almost any input device, such as slider potentiometers, rotary encoders, IMUs and touch pads. We’ll look at what’s worked, what hasn’t and how to make your own games controller. about this event: https://c3voc.de

The Open Build Service has new support to allow developing packages directly in git repositories. This means that entire source management would be handed over to some pagure, gitlab or gerrit instance as origin of trust. The talk will describe possible setups, workflows and development scenarios. Including an open discussion what should we aim for our main distributions. The Open Build Service has new support to allow developing packages directly in git repositories. This means that entire source management would be handed over to some pagure, gitlab or gerrit instance as origin of trust. The talk will describe possible setups, workflows and development scenarios. Including an open discussion what should we aim for our main distributions. about this event: https://c3voc.de

Imagine this: you're a Venezuelan student activist, and you're protesting to get your university the budget it so desperately needs and the powers that be mercilessly cut away. But then, your government disrupts phone coverage in the area to discourage protestors and potentially cover human rights violations. Scary, right? Hopefully you're not in this situation. But chances are your hacker brain would love to know how I used tech to react to this! In this talk, I'll cover how we stayed connected using Mesh Networking, phones' Wi-Fi chips, a couple of apps, a bit of fear, and a whole lot of determination! https://twitter.com/gustakasn0v about this event: https://c3voc.de

An introduction to getting started designing and building your own audio DSP processors for guitar pedals, eurorack modules and other similar style projects using modern microcontrollers. Covering the very basics of digital audio, microcontrollers, audio codecs and PCB design, this talk will give a whistle stop tour of the process involved in making digital effects processors from conception to building a prototype. This talk will be aimed at those with little experience, but an interest in combining electronics and programming to process live audio in hardware. I came from a programming background, and have no training in electronics. I want to show an audience what can be achieved with a little bit of knowledge and lots of enthusiasm. Encouraging borrowing from open source projects to identify common circuits and practises that can be stitched together to form a complete project. about this event: https://c3voc.de

openSUSE Leap Micro is a new distribution based on SUSE Linux Enterprise Micro with the main purpose to be a host-os with minimal footprint which fits well the app-centric world. A small foot print, focus on the EDGE as well as data center, containerization and virtual machines, whatever flies your app. Leap Micro has a 6 months release cycle with support lasting until the next release or up to 4 years of support with a migration to SLE Micro. openSUSE Leap Micro is a new distribution based on SUSE Linux Enterprise Micro with the main purpose to be a host-os with minimal footprint which fits well the app-centric world. A small foot print, focus on the EDGE as well as data center, containerization and virtual machines, whatever flies your app. Leap Micro has a 6 months release cycle with support lasting until the next release or up to 4 years of support with a migration to SLE Micro. about this event: https://c3voc.de

The demoscene is a strange geek subculture, dedicated to making great digital art and making computers doing things they were never designed to do. At EMF, we have the Field-FX village, which will spend the weekend showcasing the best of the demoscene. Come learn who we are and how you can get involved and easily start creating some awesome demos about this event: https://c3voc.de

Delighted to announce that the Ore-Some Xylophone will be making its UK debut at EMF 2022! Come and see the electromechanical xylophone that generates truly random compositions by measuring the radioactivity of a lump of uranium ore. You can turn the handwheel to move the lead shield and adjust the speed of the music. I like making things, often mechanical or electronic. My sculptures frequently have audio elements, and involve owls whenever possible. My website has a lot of descriptions of how projects were built, but I'm planning a talk that gives a little more detail about the business side of making things full time for a living. The talk is aimed at myself, 20 years ago. I hope you're listening, younger me... about this event: https://c3voc.de

On an example of PMM (Percona Monitoring and Management) opensource project I would like to show how to use podman instead of docker in software development process. We would go throw the basic (how to configure it) and discuss the changes required in build scripts, environment and etc. This will cover docker (run, build), docker-compose and briefly minikube to be replaced or use podman. [presentation slides](https://denisok.github.io/oSC/switch_docker_podman_dev_env.html) On an example of PMM (Percona Monitoring and Management) opensource project I would like to show how to use podman instead of docker in software development process. We would go throw the basic (how to configure it) and discuss the changes required in build scripts, environment and etc. This will cover docker (run, build), docker-compose and briefly minikube to be replaced or use podman. [presentation slides](https://denisok.github.io/oSC/switch_docker_podman_dev_env.html) about this event: https://c3voc.de

The speaker works for a small company in the UK who have developed a VTVL (Vertical Take-off, Vertical Landing) rocket, also known as a hopper or lander. This started as a student / hobby project and is now receiving funding from the European Space Agency (ESA.) There are lots of interesting technical problems involved in making a VTVL rocket work. You need to steer the rocket engine and control its thrust based on data from a variety of sensors. This involves mechanical, electronics and coding challenges. When fully developed, the test vehicle we've developed will be used to test software and hardware that enable robots to land safely on other planets such as Mars. The talk will start with an introduction to rocket engines and a simple explanation of the vehicle's dynamics then cover the development of our VTVL rocket from hobby project to successful flying test-bed. It will include video footage of recent test flights where the rocket takes off and hovers on a tethered test rig. about this event: https://c3voc.de

PAMAL_Group is a European artistic group, composed of artists, media theorists, curators-restorers and engineers. Their artwork "3615 Love" will be installed at EMF 2022. PAMAL_Group creates its own works from digital artworks that have disappeared or been severely damaged due to the obsolescence of computer software and hardware. Its work seeks to reveal the vulnerability of an art that is highly dependent on industrial logic. All the artworks that the collective reconstructs, as close as possible to the original materialities, sometimes in a deficient way, are treated as archives. The artwork "3615 Love" is based on the reconstruction of telematic materialities (videotex, Minitel network, etc.) and the archive of works by Jacques-Elie Chabert and Camille Philibert (L'Objet perdu, 1985) and Eduardo Kac (Videotext Poems, 1985-1986). The installation "3615 Love" shows how fragile and vulnerable our digital environment - and a fortiori its artistic productions - is. about this event: https://c3voc.de

We've all found ourself doomscrolling, and fighting against social network's barrage of extra things in our newsfeed and notifications to keep us there for longer. It's not good use of time, energy and mental bandwith, and hell in my case the habitual refreshing has started giving me RSI. I'll go through my three steps to stop Doomscrolling and get out of the social media refresh loop (or at least try to). about this event: https://c3voc.de

YaST, the flagship installer and configuration tool of openSUSE is in constant development. Just as its unattended companion AutoYaST. Although the YaST Team at SUSE tries to communicate progress as often as possible in the YaST Blog, it has been almost two years since we presented the "Top 25 New Features in (Auto)YaST" at openSUSE Conference 2020. So it's time for another live update! We will recap the main changes and new features that are already integrated into openSUSE Tumbleweed and that will be included at openSUSE Leap 15.4, to be released just a couple of days after the talk. We will also take a look to some ideas for future development... and we really need the feedback of the whole openSUSE community for that. So please join us and speak up! YaST, the flagship installer and configuration tool of openSUSE is in constant development. Just as its unattended companion AutoYaST. Although the YaST Team at SUSE tries to communicate progress as often as possible in the YaST Blog, it has been almost two years since we presented the "Top 25 New Features in (Auto)YaST" at openSUSE Conference 2020. So it's time for another live update! We will recap the main changes and new features that are already integrated into openSUSE Tumbleweed and that will be included at openSUSE Leap 15.4, to be released just a couple of days after the talk. We will also take a look to some ideas for future development... and we really need the feedback of the whole openSUSE community for that. So please join us and speak up! about this event: https://c3voc.de

It's no news or secret that containers are good at providing multiple and different testing environments, or at offering a way of deploying apps and services that are completely decoupled from the host OS. E.g., spin up a distro X container, check if code compiles there (and dispose of it). How about the opposite? I.e., having one (or more!) stateful and persistent environment(s), tightly coupled with the host and sharing as much information and configuration as possible with it. Why? Well for running that one app, which is only available for another distro, with just a click on a desktop launcher icon. Or for doing all kind of experiments, inside our development environment, without risking the stability and the consistency of the system. Well, yes, containers can do these things too. And in openSUSE, we have both toolbox and distrobox, that can make these examples, just reality! In this talk, we'll explain what they are and how to use them for spawning development and application environments, based either on the same distro you have on the host or on different ones, and inside of which you still have all your file. A working space that, despite being containerized, you can access seamlessly from within GNOME Builder or open new terminals directly inside of it and create launcher icons for apps installed in there. We'll offer (more) examples and show how this can be very useful, both on immutable (like MicroOS) and on "traditional" (like Tumbleweed) systems. It's no news or secret that containers are good at providing multiple and different testing environments, or at offering a way of deploying apps and services that are completely decoupled from the host OS. E.g., spin up a distro X container, check if code compiles there (and dispose of it). How about the opposite? I.e., having one (or more!) stateful and persistent environment(s), tightly coupled with the host and sharing as much information and configuration as possible with it. Why? Well for running that one app, which is only available for another distro, with just a click on a desktop launcher icon. Or for doing all kind of experiments, inside our development environment, without risking the stability and the consistency of the system. Well, yes, containers can do these things too. And in openSUSE, we have both toolbox and distrobox, that can make these examples, just reality! In this talk, we'll explain what they are and how to use them for spawning development and application environments, based either on the same distro you have on the host or on different ones, and inside of which you still have all your file. A working space that, despite being containerized, you can access seamlessly from within GNOME Builder or open new terminals directly inside of it and create launcher icons for apps installed in there. We'll offer (more) examples and show how this can be very useful, both on immutable (like MicroOS) and on "traditional" (like Tumbleweed) systems. about this event: https://c3voc.de

The largest and the highest energy scientific device - the Large Hadron Collider (LHC) is currently in operation at CERN. This machine is unique in many respects: - It is the most powerful microscope, which can probe the distance one million times smaller than the size of the proton - It can reproduce conditions of the hot Early Universe with the temperature billion times higher than in the core of the sun, corresponding to a picosecond after the Big Bang This uniqueness gives the LHC opportunity to resolve the biggest puzzles of the Universe: - to find the origin of Matter-Antimatter asymmetry – the origin of planets and starts - to Shed a light on the origin of Dark Matter and Dark Energy, 95% of which the Universe is made of (stars and planets contribute only 5% to it !) - to give us the answer on what is the ultimate theory which drives this Universe – at micro and macro scales. In the presentation I will explain the exciting details of the Large Hadron Collider and how it helps to solve the most challenging problems of particle physics and cosmology – from micro to macro scales. https://docs.google.com/presentation/d/1YiUERbdFC7pUVuayv8Swxslz5TvL8X-yFvkLq_1cvNs/edit?usp=sharing about this event: https://c3voc.de

AutoYaST is the main method for installing openSUSE Linux in enterprise environments. Although it is usual for AutoYaST to get new features and fixes with every minor release, openSUSE Leap 15.3 was special in that regard. Thanks to the "Modernizing AutoYaST" initiative, we introduced relevant features like ERB templates, better validation tools, etc. However, we have found that many of these features remain unknown to our users, and the openSUSE Conference offers an excellent chance to present them. AutoYaST is the main method for installing openSUSE Linux in enterprise environments. Although it is usual for AutoYaST to get new features and fixes with every minor release, openSUSE Leap 15.3 was special in that regard. Thanks to the "Modernizing AutoYaST" initiative, we introduced relevant features like ERB templates, better validation tools, etc. However, we have found that many of these features remain unknown to our users, and the openSUSE Conference offers an excellent chance to present them. about this event: https://c3voc.de

We take a scenic tour through the origins of the UK train ticket, from the original BR specification in the 1980s through to modern replacements like mTickets, eTickets and ITSO. This is just a detour though, and we'll focus on the 'orange ticket' (RSP 9399/9599) - which continues to be a stalwart of the UK rail network. Surely they can't be that secure? After all, anyone can encode a magstripe - right? We'll take a look through the data encoded on these tickets, what interesting things you can do with them and maybe (assuming I've got it working by then) we'll be able to read and write our own! about this event: https://c3voc.de

My experiences over the last 2-4 months learning to update packages in openSUSE. Starting around the middle of March 2022, I began learning to update packages with OBS. This lightening talk with highlight my experiences since then learning to package. My experiences over the last 2-4 months learning to update packages in openSUSE. Starting around the middle of March 2022, I began learning to update packages with OBS. This lightening talk with highlight my experiences since then learning to package. about this event: https://c3voc.de

Ask your questions about the new Adaptable Linux Platform. This will be a discussion format with the ALP steering committee. Get all the answers about the next generation product line in this open format discussion. Ask your questions about the new Adaptable Linux Platform. This will be a discussion format with the ALP steering committee. Get all the answers about the next generation product line in this open format discussion. about this event: https://c3voc.de

Last year, I ported [oreboot](https://github.com/oreboot) to the Allwinner D1 SoC that is found on the Nezha SBC and many other boards now. For a boot loader environment, I chose to embed [LinuxBoot](https://linuxboot.org), and then partitioned an SD card with two root filesystems for testing: OpenWrt, which is small and just ran right away, and openSUSE, which required some extra effort. I was happy to see a new D1 board advertised with openSUSE support, though the process of getting there was tedious enough that I wanted to find an improvement to the workflow. In this talk, I will recap how I modified the openSUSE RISC-V root filesystem, moving an SD card back and forth, and showcase a faster approach instead by leveraging the [`cpu`](https://github.com/u-root/cpu) command that lets us do that iteration over the network. Eventually, we will see how that can be leveraged to continuously test Tumbleweed on real hardware through OpenQA and a corresponding setup, which can also be applied to other hardware, such as ARM. Last year, I ported [oreboot](https://github.com/oreboot) to the Allwinner D1 SoC that is found on the Nezha SBC and many other boards now. For a boot loader environment, I chose to embed [LinuxBoot](https://linuxboot.org), and then partitioned an SD card with two root filesystems for testing: OpenWrt, which is small and just ran right away, and openSUSE, which required some extra effort. I was happy to see a new D1 board advertised with openSUSE support, though the process of getting there was tedious enough that I wanted to find an improvement to the workflow. In this talk, I will recap how I modified the openSUSE RISC-V root filesystem, moving an SD card back and forth, and showcase a faster approach instead by leveraging the [`cpu`](https://github.com/u-root/cpu) command that lets us do that iteration over the network. Eventually, we will see how that can be leveraged to continuously test Tumbleweed on real hardware through OpenQA and a corresponding setup, which can also be applied to other hardware, such as ARM. about this event: https://c3voc.de

The development model for the classic release distribution of openSUSE - Leap - has changed several times. Currently it shares the binaries with SUSE SLE. This has advantages, but as well limitations. The talk explains how the development model has evolved and its current pitfalls. In the second part we will introduce the Adaptable Linux Platform (ALP) and discuss the current state of development The development model for the classic release distribution of openSUSE - Leap - has changed several times. Currently it shares the binaries with SUSE SLE. This has advantages, but as well limitations. The talk explains how the development model has evolved and its current pitfalls. In the second part we will introduce the Adaptable Linux Platform (ALP) and discuss the current state of development about this event: https://c3voc.de