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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

00:33:15

Causal ML for Smarter Advertising Campaigns with...

Chaos Computer Club - recent events feed ·

2025/10/17

Traditionally, marketing campaign analysis relies on simple metrics like the number of purchases made after a contact, or conversions following a promotion. While these numbers tell us what happened, they don’t reveal why it happened or if the campaign truly made a difference. Such analysis can’t distinguish between customers who would have acted anyway and those who were genuinely influenced by the campaign. The key question is: did the campaign actually cause the desired effect? In this practical

00:27:04

Lessons learned from implementing Native OIDC from...

Chaos Computer Club - recent events feed ·

2025/10/17

Are we OIDC yet ? YES ! We are ! OpenID Connect evolved as the one and only identity standard in the modern web. With MSC3861, the [matrix] ecosystem is finally moving to OIDC as the authentication standard amongst clients and homeservers. Out of curiosity, I started implementing a native OIDC implementation from scratch : no OAuth 2.0 library, no Ruma ; just the [matrix] Dart SDK, an HTTP client and the MSC in front of me. This talk will be about the lessons learned. Licensed to the public under

00:57:36

ESS - Element’s distribution for Matrix deployments...

Chaos Computer Club - recent events feed ·

2025/10/17

In this talk we will provide insights on the new Element Server Suite (ESS) editions which provide an Element-supported way to deploy Matrix stacks. ESS is available in three editions - [ESS Community](https://github.com/element-hq/ess-helm) - the free Matrix distribution from Element for small-/mid-scale, non-commercial community use cases - [ESS Pro](https://element.io/server-suite) - the commercial Matrix distribution from Element for professional use - [ESS

00:49:26

Improving the security of the federation protocol...

Chaos Computer Club - recent events feed ·

2025/10/17

The federation protocol is how Matrix homeservers communicate between each other. In private federations this isn't particularly challenging as the network is trusted but in the public federation this isn't true. This talk dives into what protocol improvements are in the works to make the public federation more secure against Byzantine actors, particularly against "state resets": an unintended rollback of room state. We'll explore why this problem is hard, what some of the failure modes are, and how

00:34:32

AI Coding Agents and how to code them (sps25)

Chaos Computer Club - recent events feed ·

2025/10/17

I Agents are the next big thing everyone has been talking about. They are expected to revolutionize various industries by automating routine tasks, mission critical business workflows, enhancing productivity, and enabling humans to focus on creative and strategic work. Of course, you can apply them to your everyday coding tasks as well. In this talk we’ll go over what those agents can bring to the table of coding world, and why they can deliver the promise of coding smarter that the current

00:14:58

How Matrix is becoming the communication standard for...

Chaos Computer Club - recent events feed ·

2025/10/17

Matrix was built to become the open communication of the web and serve everyone. But, as the Internet and email did, its network effect started with governments. Today, and as proven by the audience in the room, most European governments and several others are either using it or looking at implementing it for their communications. This talk will tell the story of how we got there and why. Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event:

00:51:39

Eventually Consistent Access Control: Practical...

Chaos Computer Club - recent events feed ·

2025/10/17

Access control is the core of any system's security, but usually provided by a single, centralized server. However, access control in a Matrix room is decentralized: every participating server *independently* decides *who* is authorized to send and receive *which* events, without consulting any other server. To the surprise of many, these decisions are still *eventually* consistent even if all but one server is malicious, but seeing *why* requires a new way of thinking about access control. I will

00:42:28

Element X Web (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/17

Element X is coming to web and desktop! What does that mean? We’re going to make the apps simple, familiar, reliable and fast! Come learn more about the vision we have put together and all the progress we have made so far! The talk will cover: * The qualities/goals we are aiming for in EWX * The high level plan to achieve this including: * Our product and design strategy * The phased plan for delivery * The key technologies that will enable the transformation * An update on progress and next

00:20:43

Luxchat(4gov) (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/17

Presentation of the Luxembourg efforts to establish a sovereign instant messaging ecosystem for the public and private sector for Luxembourg. More details to follow. Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event: https://cfp.2025.matrix.org/matrix-conf-2025/talk/GEEKMY/

00:34:24

Machine learning for Swiss democracy (sps25)

Chaos Computer Club - recent events feed ·

2025/10/17

Demokratis.ch is a non-profit project working to modernise the consultation procedure—a key democratic process that allows Swiss citizens to provide feedback on proposed laws and amendments. Today, the process is slow and cumbersome for everyone involved: it requires studying lengthy PDFs, writing formal letters, and even synthesising legal arguments by copy-pasting into Excel. There’s a huge opportunity to streamline this process and make this democratic tool more accessible and inclusive. In this

00:06:25

Welcome - Day 2 (sps25)

Chaos Computer Club - recent events feed ·

2025/10/17

A welcome message and useful information from the organisers. You will also find useful information on our [website](https://www.python-summit.ch/). Or feel free to ask any member of staff if you have a question. about this event: https://talks.python-summit.ch/sps25/talk/D7KQWT/

00:24:27

Governing Board transparency update (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/17

In this talk we will cover - what is the Governing Board about - how does it fit into the Foundation - reviewing the last 12 months and outputs - showing some of the different processes like establishing Working Groups, what Committees are, interactions with the Foundation - what next - how to get involved in open governance - take some questions Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event:

00:25:03

The Element update: Shininess, scalability and...

Chaos Computer Club - recent events feed ·

2025/10/17

A whistle stop tour of Element’s progress over the last year! Highlights include Element Server Suite Community, the latest on Element X, Spaces, Threads and Element Call. There’s also Element Server Suite Pro, Synapse Pro and the launch of Element Pro; the Element app specifically for the workplace! Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event: https://cfp.2025.matrix.org/matrix-conf-2025/talk/WEASKJ/

00:02:00

Closing - Day 1 (sps25)

Chaos Computer Club - recent events feed ·

2025/10/16

A thank you from the organisers. We hope you enjoyed your day! about this event: https://talks.python-summit.ch/sps25/talk/AZGSCP/

00:41:46

Lightning Talks - Day 1 (sps25)

Chaos Computer Club - recent events feed ·

2025/10/16

Our Lightning Talks are open to everyone 😊 about this event: https://talks.python-summit.ch/sps25/talk/EP7BNX/

00:30:18

Using Python's array API standard for ESA's Euclid...

Chaos Computer Club - recent events feed ·

2025/10/16

Over the years, the lack of an array data type in Python has resulted in the creation of numerous array libraries, each specializing in unique niches but still having some interoperability between each other. NumPy has become the de facto array library of Python, and the other array libraries try to keep their API close to that of NumPy. However, this often becomes infeasible, and the libraries deviate out of necessity. To make Python's array libraries shake hands with each other without any

00:36:16

The High Price of Open Source: Building a Business...

Chaos Computer Club - recent events feed ·

2025/10/16

Open Source has never been easy, but doing Open Source in the Matrix ecosystem poses a unique set of challenges. Add the pressure of sustaining a company on top of that, and you quickly find yourself in uncharted, and often uncomfortable, territory. This talk reflects on the reality of maintaining open source projects in the Matrix universe, especially from the perspective of a business. It dives into the tension between openness and exploitation, when others take your work without contributing

00:31:18

Software estimation: False sense of certainty (sps25)

Chaos Computer Club - recent events feed ·

2025/10/16

It has been known since the 70s that developers tend to give very optimistic estimations. We prefer to have exact numbers, even if that means they are wrong most of the time. In research, developers admitted that they believe their managers will see them as less competent if they provide estimates with huge margins. But mathematically speaking providing a wider min-max interval means you will be right more often. So, maybe it isn’t really accuracy that businesses and people are looking for. Maybe

00:13:43

E2EE Direct Messaging in Bluesky with Matrix...

Chaos Computer Club - recent events feed ·

2025/10/16

See a demo of E2EE encrypted DMs in Bluesky powered by Matrix. We will highlight the simple user experience and other advantages of this approach to adding E2EE to Bluesky. By reusing Matrix for E2EE DMs in Bluesky, we not only offer a trusted and tested open source encryption stack but also allow users to later expand their usage beyond chat to other Matrix features such as E2EE voice, video and more. Alternate approaches to build E2EE from scratch in Bluesky will take many years to achieve

00:37:30

An Update on reaching the German Government via...

Chaos Computer Club - recent events feed ·

2025/10/16

With *Beyond Instant Messaging: Matrix in the Public Sector* last year, we presented FITKO and the German Federal Ministry of the Interior joining efforts to pilot a Matrix-based next-generation communication infrastructure for digital government services, with the goal to showcase end-to-end encryption, great usability and machine-readable communication between citizens and public authorities. Lets take another look at the project, what we have done since and what else there is to come for

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