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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

00:27:18

The Ugandan Geo Quests: Mapping Libraries and Museums...

Chaos Computer Club - recent events feed ·

2025/10/04

Across Uganda, countless community libraries and local museums hold untold stories, cultural memory, and untapped knowledge—but remain invisible on the digital map. The Ugandan Geo Quests project aims to change that. This session introduces two complementary national mapping initiatives: The Ugandan Libraries Geo Quest and The Ugandan Museums Geo Quest, which leverage OpenStreetMap, Wikidata, and Wikipedia to bring local knowledge institutions into the global digital commons. We’ll explore how

00:27:06

OpenStreetMap x Wikidata Collaboration: Taiwan Case...

Chaos Computer Club - recent events feed ·

2025/10/04

Not only NSI, but Wikidata can be integrated with OpenStreetMap, and vice versa! Many years ago, with the help of Wikidata Taiwan, OpenStreetMap Taiwan has mapped all 7,000 villages, and also cross-linked to Wikidata. We also have a similar river project of mapping all rivers in Taiwan and crosslinking to Wikidata with the help of the river code published by the Taiwan government. In this talk, we want to further talk about the school, mountain, church, temple, and hiking trail mapping projects,

00:24:10

Platinum Sponsor Session: From Edits to Impact -...

Chaos Computer Club - recent events feed ·

2025/10/03

TomTom partners with OSM communities worldwide to build richer maps through collective action. In this SotM Global event 2025, we share how we support university mapathons, YouthMappers, and humanitarian mapping in 189 countries, reflecting on learnings and challenges in scaling community engagement while advancing OSM’s mission through meaningful, local partnerships. TomTom and the OpenStreetMap Community share a common vision: building a map that reflects and serves the world, powered by local

00:15:13

Platinum Sponsor Session: OSM Data for Two-Wheelers...

Chaos Computer Club - recent events feed ·

2025/10/03

This talk delves into the unique challenges and opportunities of enhancing OpenStreetMap (OSM) data for two-wheeler routing and safety. Two-wheelers are a vital mode of transportation within SEA, yet their safety needs are often overlooked. Drawing from our experience in building and contributing enriched safety data back to OSM, we explore how attributes like lighting conditions, speed bumps, and pothole assessments can make navigation safer and more efficient for two-wheelers. Through this

00:05:32

What opinions do LLMs/chatbots have about...

Chaos Computer Club - recent events feed ·

2025/10/03

In this work we develop a reproducible pipeline for querying multiple LLMs/chatbots in order to access and analyse their opinion on OpenStreetMap by prompting these systems to answer a series of questions on OSM. People are turning to chatbots and LLMs for opinions and advice on practically every topic. We believe it is important that we begin to assess how chatbots and the LLMs provide information and opinion about OSM. Among other outputs, this work can providing evidence to the OSM community

00:06:15

Open Mapping for Urban Resilience: A Routing Model to...

Chaos Computer Club - recent events feed ·

2025/10/03

Dhaka, one of the most densely populated cities in the world, faces a high risk of catastrophic damage in the event of a major earthquake. The lack of accessible open spaces poses a serious challenge for emergency evacuation and survival. This project utilizes OpenStreetMap (OSM) road and building layers, combined with satellite imagery, to identify existing open spaces across the city. Using ArcGIS, a routing model was developed to guide individuals to their nearest safe zone during an earthquake

00:32:13

HOT 15-year Anniversary (sotm2025)

Chaos Computer Club - recent events feed ·

2025/10/03

The Humanitarian OpenStreetMap Team (HOT) celebrates its 15th anniversary in 2025. This presentation will explore HOT's evolution from a small group of mappers responding to the Haiti earthquake to a global organization at the forefront of humanitarian mapping. We'll delve into key milestones, technological advancements, the growth of the HOT community, and the increasing role of local mappers in leading humanitarian responses. The talk will also address the challenges and opportunities for the next

00:02:22

Closing session of All Systems Go! 2025 (asg2025)

Chaos Computer Club - recent events feed ·

2025/10/01

Closing session of All Systems Go! 2025 Licensed to the public under https://creativecommons.org/licenses/by/4.0/de/ about this event: https://cfp.all-systems-go.io/all-systems-go-2025/talk/DR8ELH/

00:25:30

OS as a Service at Meta Platforms (asg2025)

Chaos Computer Club - recent events feed ·

2025/10/01

I overview how OS management is done at Meta. We run millions of Linux servers and we have to make sure that OS gets updated on all of them in a given period of time. To do that we developed several products: MetalOS (Image based version of CentOS), Antlir (image builder) and Rolling OS Update (a service that keeps a set of DNF repos in sync with upstream repos and uses them to update OS ) Licensed to the public under https://creativecommons.org/licenses/by/4.0/de/ about this event:

00:24:59

One Boot Config to Rule Them All: Bringing UAPI Boot...

Chaos Computer Club - recent events feed ·

2025/10/01

The UAPI Boot Loader Specification defines conventions that let multiple operating systems and bootloaders share boot config files. So far, only systemd-boot implements it - and it’s UEFI-only by design. As a result, hybrid UEFI/BIOS images require maintaining (and keeping in sync) two sets of bootloader configs: one for systemd-boot, and one for a legacy bootloader such as syslinux. I set out to fix that by building a BIOS bootloader that uses the UAPI Boot Loader Specification - allowing both

00:25:20

What's up with test.thing (asg2025)

Chaos Computer Club - recent events feed ·

2025/10/01

`test.thing` is a VM runner which targets guests using an API defined by systemd. It started after a conversation at devconf about turning `mkosi qemu` into a library. A quick intro. ~~composefs is an approach to image-mode systems without the disk images. Files are stored in a de-duplicated content-addressed storage with integrity guaranteed through fs-verity. The last year has seen an acceleration of development on composefs-rs, a pure Rust implementation of the ideas behind composefs. Our

00:26:33

Yocto's hidden gem: OTA and seamless updates with...

Chaos Computer Club - recent events feed ·

2025/10/01

Updates are a critical piece of managing your fleet of devices. Nowadays, Yocto-based distributions can utilize layers for well-established update mechanisms. But, did you know that recent releases of Yocto already come with a simple update mechanism? Enter systemd-sysupdate: a mechanism capable of automatically discovering, downloading, and installing A/B-style updates. By combining it with tools like systemd-boot, we can turn it into a comprehensive alternative for common scenarios. In this

00:34:54

A terminal for operating clouds: administering S3NS...

Chaos Computer Club - recent events feed ·

2025/10/01

S3NS is a trusted cloud operator that self-hosts Google Cloud infrastructure in France, targeting the SecNumCloud certification, the most stringent Cloud certification framework. SecNumCloud includes strict legal and operational constraints. To manage these systems securely and reproducibly, we’ve built a family of dedicated administration terminals based on the image based philosophy. These terminals rely on NixOS semantics and draw from the ParticleOS ecosystem: systemd-repart, and dm-verity,

00:42:50

UKI, composefs and remote attestation for Bootable...

Chaos Computer Club - recent events feed ·

2025/10/01

With Bootable Containers (bootc), we can place the operating system files inside a standard OCI container. This lets users modify the content of the operating system using familiar container tools and the Containerfile pattern. They can then share those container images using container registries and sign them using cosign. Using composefs and fs-verity, we can link a UKI to a complete read only filesystem tree, guaranteeing that every system file is verified on load. We integrate this in bootc by

00:24:20

Introducing ue-rs, minimal and secure rewrite of...

Chaos Computer Club - recent events feed ·

2025/10/01

Introduce ue-rs, a fresh project that aims to be a drop-in reimplementation of update engine, written in Rust. The goal of ue-rs is to have a minimal, secure and robust implementation of update engine, required by A/B update mechanism of Flatcar Container Linux. Just like the existing update engine, it downloads OS update payloads from a Nebraska server, parses its Omaha protocol, verifies signatures, etc. This project, however, is different from the original update engine in the following aspects

00:25:51

Leveraging bootable OCI images in Fedora CoreOS and...

Chaos Computer Club - recent events feed ·

2025/10/01

In last year's ASG!, bootc and bootable containers were introduced. In this talk, we'll go over what changed since last year, and how Fedora CoreOS and RHEL CoreOS are leveraging bootable containers to reduce maintenance and increase sharing. Licensed to the public under https://creativecommons.org/licenses/by/4.0/de/ about this event: https://cfp.all-systems-go.io/all-systems-go-2025/talk/87TFB7/

00:26:27

Dirlock: a new tool to manage encrypted filesystems...

Chaos Computer Club - recent events feed ·

2025/10/01

In the Linux world there are several tools and technologies to encrypt data on a hard drive, most falling into one of two categories: block device encryption (like LUKS) or stacked filesystem encryption (like EncFs or gocryptfs). This presentation will introduce Dirlock, a new tool that belongs to a third category: native filesystem encryption, using the kernel's fscrypt API. Dirlock is currently being developed and its aim is to provide a flexible way to encrypt files, suitable for both user

00:22:46

container-snap: Atomic Updates from OCI Images using...

Chaos Computer Club - recent events feed ·

2025/10/01

Traditional package updates using tools like RPM or Zypper can introduce risks, such as incomplete updates or accidentally breaking the running system. To overcome these challenges, we developed **container-snap**, a prototype plugin designed to deliver atomic OS updates—updates that are fully applied or rolled back without compromising the system's state. container-snap leverages OCI images as the source for updates and integrates seamlessly with openSUSE’s

00:39:28

pidfd: What have we been up to? (asg2025)

Chaos Computer Club - recent events feed ·

2025/10/01

File descriptors for processes on Linux have been available for quite some time now. Userspace has adapted them widely. Over the last two years or so we've extended the abilities of pidfds significantly. This talk will go over all the new features and deep dive into their implementation and usage. Licensed to the public under https://creativecommons.org/licenses/by/4.0/de/ about this event: https://cfp.all-systems-go.io/all-systems-go-2025/talk/3BMJVH/

00:38:14

Forget zbus, zlink is the future of IPC in Rust...

Chaos Computer Club - recent events feed ·

2025/10/01

Last year, Lennart Poettering of the systemd fame, [gave a presentation](https://media.ccc.de/v/all-systems-go-2024-276-varlink-now-) at this very same conference, where he introduced Varlink, a modern yet simple IPC mechanism. He presented a case for Varlink, rather than [D-Bus](https://en.wikipedia.org/wiki/D-Bus) to be the future of Inter-process communication on Linux. As someone who works on D-Bus, I took upon myself to prove him wrong, only to find out that I achieved exactly the opposite. It

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