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PODCAST

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

00:27:35

Look ma, no secrets! - bootstrapping cryptographic...

Chaos Computer Club - recent events feed ·

2025/09/30

All the big cloud providers provide your machines with a unique cryptographic identity that can be used to talk to their cloud services securely without having to manage or rotate any cryptographic secrets yourself. For example GCP has Service accounts and AWS has IAM roles. This ubiquity of cloud identity and the seamless integration with all the the services of these cloud providers is one of the reasons why they are so successful. SPIFFE (Secure Production Identity Framework For Everyone)

00:25:45

systemd-confext Two Years On: Versioned Overlays for...

Chaos Computer Club - recent events feed ·

2025/09/30

systemd-confext is a lightweight overlay mechanism for /etc, allowing you to drop in a configuration extension ("confext") bundle and let systemd make it visible to your service as though it was already shipped with the base image. Building on the same extension magic as systemd-sysext, confext also introduces extra features tailored for the /etc use case, such as vpick-ing the newest version and the ability to pick up config revisions with a `systemctl reload`. This talk presents the changes to

00:26:12

Accessing shadow records via varlink (asg2025)

Chaos Computer Club - recent events feed ·

2025/09/30

Provide a varlink service to access /etc/passwd and /etc/shadow so that no setuid and setgid binaries are necessary for this task. There are two independent "problems" which can be solved with the same idea: all files in /usr should be owned by root:root and no setuid binary should be needed. The first one is a requirement of image based updates of /usr to avoid UID/GID drift, the second one is a security feature wished by systemd developers and security teams. Currently most setuid binaries (or

00:24:03

How I optimized away 94% CPU from zbus (asg2025)

Chaos Computer Club - recent events feed ·

2025/09/30

Haven’t you ever wanted to find ways to make your Rust code the most optimal in the world? I know how you feel. This is a talk, where I’d tell you how easy it is to profile your Rust software and how most often the solutions are trivial. This is a story of how I used a few readily-available Open Source tools to achieve huge optimizations in [zbus](https://crates.io/crates/zbus), a pure Rust D-Bus library. This was long journey but gains were worth the efforts. I will go through each single

00:28:12

systemd: round table (asg2025)

Chaos Computer Club - recent events feed ·

2025/09/30

Let's have an open discussion with systemd developers who are at ASG and users in the audience. We will open with the developers saying what they plan to work on in the near future, and then allow questions / comments from the audience. 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/PXZGEL/

00:21:47

systemd: state of the project (asg2025)

Chaos Computer Club - recent events feed ·

2025/09/30

Same as every year, a lot has happened in the systemd project since last year's ASG. We released multiple versions, packed with new components and features. This talk will provide an overview of these changes, commenting on successes and challenges, and a sneak peak at what lies ahead. 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/B8RVCJ/

00:25:57

Linux IPC: Lost between Threading and Networking...

Chaos Computer Club - recent events feed ·

2025/09/30

Communication is paramount in modern application development. This applies equally well to the process of writing applications and to the code itself. The complexity of the tasks ahead of us calls for a distributed and coordinated development effort, and this often manifests in our code: We design distributed, communicating systems to split complexity and responsibility among many people and teams, and at the same time meet the demand for ever faster systems. The last decade showed significantly

00:23:50

BPF Tokens in systemd (asg2025)

Chaos Computer Club - recent events feed ·

2025/09/30

Running **BPF** programs today requires *CAP_BPF* capability, which is an all or nothing BPF capability. But BPF nowadays spans a large area, from simple monitoring to potentially invasive fields like network or tracing. BPF Tokens aims to add fine grained BPF capabilities to systemd units and containers, avoiding to give the whole *CAP_BPF* capability or even worse running the service as privileged

00:29:24

Systing: tracing for the lazy (asg2025)

Chaos Computer Club - recent events feed ·

2025/09/30

Systing helps you solve problems in minutes rather than days. Out of the box it gives you everything you could possibly need, combined with perfetto’s visualization you will never be confused again. This talk will introduce systing, a tracer that is built on modern BPF tooling, purpose built to debug large applications with complicated interactions. This will be little talk and mostly demo. Two decades of experience debugging kernel problems has been poured into this tool to make it as

00:23:28

Why you should contribute to systemd! (asg2025)

Chaos Computer Club - recent events feed ·

2025/09/30

I'll use these 20 minutes to explain why and why contributing to systemd is a great experience. We'll avoid beating dead horses by not discussing git forges and email, but instead focus on the development experience, from building systemd distribution packages from git main, running integration tests against those distribution packages, debugging failures, writing new tests, and installing the distribution packages on real hardware to debug issues. Licensed to the public under

00:21:20

Container Networking With Netkit: The BPF...

Chaos Computer Club - recent events feed ·

2025/09/30

Introduced in kernel v6.7, the Netkit device is an eBPF-programmable network device designed with containers in mind. In this talk, I will go over the the basics of the Netkit device, and discuss the performance gains we have realized and challenges we faced when rolling out Netkit across millions of containers at Meta. 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/WAHYE8/

00:40:31

A Security Model for systemd (asg2025)

Chaos Computer Club - recent events feed ·

2025/09/30

Linux lacks a coherent security model, and by extension we never defined one for the systemd project either. In this talk I'd like to start changing this, and begin defining some general security design guidelines that we so far mostly followed implicitly, and make them more explicit. After all, systemd to a large degree is involved in security subsystems, from SecureBoot, Measured Boot & TPM, to its service sandboxing, dm-verity/dm-crypt support, its FIDO2/PKCS#11 hookups, its many security

01:06:13

Wie sicher ist elektronisch Bezahlen tatsächlich? (dgna)

Chaos Computer Club - recent events feed ·

2025/09/25

Immer weniger Leute bezahlen mit Bargeld. Was soll man nutzen? Debit-Karte, Google- oder Apple Pay oder doch unser Schweizer Twint? Wo liegen Gefahren und Betrüger auf der Lauer? Und wie kann man sich dagegen schützen? An Netzpolitischen Abend vom 25. September erklärt Romano Ramanti – Vizedirektor und Ethischer Hacker bei der Zürcher Kantonalbank – die verschiedenen Systeme, wie sie funktionieren, wo man sie einsetzen kann und wo man aufpassen sollte. Als ethischer Hacker kennt er alle Tricks und

01:48:03

Evoke 2025 Nachlese (oc)

Chaos Computer Club - recent events feed ·

2025/09/25

Der Sommer war laut und bunt, denn vom 15. bis 17. August fand wieder die Evoke statt, eine der traditionsreichsten Demopartys und ein fester Treffpunkt der Demoszene seit über zwei Jahrzehnten. Wer dabei war, weiß, wovon hier die Rede ist. Wer nicht dabei war – kein Problem. Beim OpenChaos gibt es die Gelegenheit, die besten Beiträge der Evoke noch einmal zu erleben. Tobi vom Digitale Kultur e.V. zeigt eine Auswahl der (subjektiv) besten und schönsten Demos und Intros der Evoke 2025 – von PC bis

00:11:09

Closing (DS2025)

Chaos Computer Club - recent events feed ·

2025/09/21

Closing Licensed to the public under https://creativecommons.org/licenses/by/4.0/de/ about this event: https://talks.datenspuren.de/ds25/talk/FUJERP/

00:46:24

The End of the World as we know it? (DS2025)

Chaos Computer Club - recent events feed ·

2025/09/21

Wie TechBros die Zukunft planen und weshalb wir diese Zukunft stoppen, um Planeten & Gesellschaft zu erhalten Moderne Technologie wie „KI“ werden uns durch eine Vielzahl an Versprechen schmackhaft gemacht: Die künstliche Intelligenz macht alles noch viel besser. Fortschritt, permanente Verbesserungen, die beste Zukunft aller Zeiten. Beim näheren Hinsehen sind diese Versprechen aber extrem unkonkret: Wohin wir durch die Nutzung dieser Technologien fortschreiten, für wen sich alles permanent

00:31:54

How to Construct a more Decentralized Internet? (DS2025)

Chaos Computer Club - recent events feed ·

2025/09/21

This talk reports about Dresden Internet Exchange (DD-IX), how it was build, why it was necessary and lessons that we learned. The infrastructure of the Internet is becoming increasingly centralized by large Internet and content providers and Internet Exchanges. As a result, packets have to travel hundreds of kilometers, even if the sender and receiver are located in the same city. This causes increased latency and makes the Internet more susceptible to disruptions. With DD-IX, we want to do our

00:07:34

Begeisterung weiter teilen: Closing und...

Chaos Computer Club - recent events feed ·

2025/09/21

Auch das Mega-Knowledgecamp 2025 geht einmal zu Ende. Wir schauen gemeinsam auf zwei bunte Tage zurück und nutzen die Gelegenheit auch, um einen Blick auf die extra für das Event aufgebaute Infrastruktur zu werfen. Licensed to the public under https://creativecommons.org/licenses/by/4.0/ about this event: https://cfp.megakc.hacksaar.de/megakc25/talk/AGU9YR/

00:33:42

Wie man mit PostmarketOS Linux auf dem Handy benutzt...

Chaos Computer Club - recent events feed ·

2025/09/21

Kurze Einführung zu PostmarketOS & Q&A Seit Anfang des Jahres benutze ich mit PostmarketOS mainline Linux auf meinem Handy. Ich möchte euch in diesem Talk erzählen, wie das möglich ist, wie benutzbar das ist und was man alles damit machen kann. Am Ende gibt es ein Q&A und ich kann verschiedene Funktionen zeigen. Licensed to the public under https://creativecommons.org/licenses/by/4.0/de/ about this event: https://talks.datenspuren.de/ds25/talk/CSQXWM/

00:44:43

Freie Sachsen - Wie es der sächsischen Neonazi-Szene...

Chaos Computer Club - recent events feed ·

2025/09/21

Alter Wein in neuen Schläuchen - wie es den Freien Sachsen gelungen ist, die Neonazi-Szene in Sachsen neu zu organisieren. Seit der Corona-Pandemie hat sich die sächsische Neonazi-Szene stark verändert. Die NPD verlor ihre zentrale Stellung spätestens mit ihrer Umbenennung in "Die Heimat", gleichzeitig blieb das Aktivitätsniveau der rechten Szene hoch. Durch die Corona-Proteste hat mit den "Freien Sachsen" ein neuer Akteur die Funktion als wichtigste Partei der sächsischen Neonazis übernommen -

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