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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

01:26:51

Palantir, Dark Enlightenment und die deutsche Polizei...

Chaos Computer Club - recent events feed ·

2025/10/30

Das Pentagon findet es gut, die Migrationsbehörde ICE findet es gut, Banken und Wirtschaft finden es gut, Sauron findet es sehr gut und da überrascht es nicht, dass die deutschen Sicherheitsbehörden es auch gut finden: Die Überwachungssoftware Palantir Momentan ist die amerikanische Überwachungssoftware Palantir in aller Munde. Nicht nur, weil die deutsche Polizei es in den Bundesländern Bayern, Hessen und Nordrhein-Westfalen bereits verwendet und der deutsche Innenminister die Nutzung gerne

00:41:56

Variational Autoencorders: the cognitive scientist's...

Chaos Computer Club - recent events feed ·

2025/10/24

Variational Autoencoders (VAEs) were first introduced as early concept learners in the vision domain. Since then, they have become a staple tool in generative modeling, representation learning, and unsupervised learning more broadly. Their use as analogues of human cognition is one of the first steps towards the understanding of more complex cognitive models leading up to models of human brain function and behavior. As part of a series of talks on cognitive science and deep learning at the realraum

01:11:05

Gute Sache, falsche Plattform? NGO im Dilemma der...

Chaos Computer Club - recent events feed ·

2025/10/23

Social Media geniesst keinen guten Ruf. Reisserische Posts erhalten mehr Reichweite als fundierte Meinungen, polarisierende Inhalte werden gefördert und die Macht darüber, was wir zu sehen bekommen, liegt in den Händen von Tech-Milliardären. Dennoch ist es für Vereine und Organisationen fast unmöglich, ihre Community zu pflegen und ihre Botschaften zu verbreiten, ohne auf Social Media präsent zu sein. Doch wie macht man das, ohne seine eigenen ethischen Grundwerte zu verraten? Und bräuchte es mehr

00:23:45

Closing (matrix-conf-2025)

Chaos Computer Club - recent events feed ·

2025/10/18

See you next year! 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/KAB39N/

00:27:44

Holding the Fort: How did bridges happen...

Chaos Computer Club - recent events feed ·

2025/10/18

Take a trip back through time with me as we learn about how bridges happened. Why did we do it at all? Whose idea was it to hook up the then fledgling matrix.org network to the biggest IRC network? How many databases were shredded in the line of duty? This talk features a journey back through time as we look at bridges and integrations that have been built on Matrix over the years, and what we can hope to learn from it. There will be laughter, there will be eyebrows raised, there will be content

00:30:13

Leading the way into CRA compliance: Element’s...

Chaos Computer Club - recent events feed ·

2025/10/18

The Cyber Resilience Act is a new European regulation that has the main goal to increase European cyber security and resilience, through accountability. A lot has been said about the impacts of the CRA on open source, in particular towards non-profit foundations, but what about organisations - such as Element - that operate complex licensing models with a mix of monetised and non-monetised products? In this talk we endeavour to shine a light on our thinking regarding CRA compliance for our

00:54:14

How do messaging app users feel about untraceability?...

Chaos Computer Club - recent events feed ·

2025/10/18

Messaging platforms offer to protect user privacy via a variety of features, such as disappearing messages, password-protected chats, and end-to-end encryption (E2EE), which primarily protect message contents. Beyond such features, "untraceable communication" tools for instant messaging protect users from network attackers observing transport layer metadata, which can reveal who communicates with whom, when, and how often. However, unlike E2EE, the effectiveness of these tools depends on large

00:14:05

Getting started with Element Server Suite Community...

Chaos Computer Club - recent events feed ·

2025/10/18

Join us for an introduction to the Element Server Suite Community, the simplest way to deploy a Kubernetes-based Matrix 2.0-ready stack, maintained by Element. This workshop will deploy all the components of the suite: a Synapse homeserver with Matrix Authentication Service enabled, a Matrix RTC backend for calls, and an Element web client. You'll be able to try it on your local laptop using your Docker daemon, or deploy it on a virtual machine with a single-node Kubernetes setup. Whether

00:18:14

Scaling Real-Time in NeoBoard: Our Journey from P2P...

Chaos Computer Club - recent events feed ·

2025/10/18

[NeoBoard](https://neoboard.io/) is an open source real-time collaborative whiteboard built on the Matrix protocol. It functions both as a widget within chat-focused Matrix clients like Element Web, and as a standalone web app that acts as a lightweight, whiteboard-centric Matrix client In this talk, we’ll share how we migrated NeoBoard’s real-time collaboration feature from a peer-to-peer WebRTC implementation to MatrixRTC with a LiveKit backend, a shift that was key to scaling to hundreds of

00:31:43

A Contextual Integrity approach to privacy in...

Chaos Computer Club - recent events feed ·

2025/10/18

This talk will introduce the Helen Nissenbaum's theory of Contextual Integrity as a framework for understanding privacy in messaging platforms. Contextual Integrity views privacy not as keeping information secret, but as making sure information flows in ways that match people’s expectations in a given context, or in other words, what feels appropriate to share, with whom, and for what purpose. For example, if Alice shares her live location with Bob through a messaging app, she likely expects the app

00:23:08

Integrating Matrix in a trustworthy collaborative...

Chaos Computer Club - recent events feed ·

2025/10/18

At Oodrive, our mission is to offer a secure and sovereign solution to manage our partners' most sensitive data. Building on this foundation, we are developing a secure collaboration platform that fully aligns with these values. Collaboration cannot happen without communication, therefore we decided to integrate a secure chat in our product. We chose the Matrix protocol to achieve that goal. Now that a first version is out and available to our partners, we want to share with the community how we

00:47:04

Portable identites (MSC 2787) and the GDPR right to...

Chaos Computer Club - recent events feed ·

2025/10/18

Most of the discussions around privacy laws have been focused on the protection of data and condition of processing. But some others rights are starting to be litigated more widley and will soon play a bigger role for IT systems managers. This talk will focus on the GDPR article 16 (right to rectification), and how the current Matrix spec is inadequate for servers operators aiming to let people change their username, since MXID can't be changed (as of this proposal writing in June 2025). Based on

00:51:52

Solving the Fork Dilemma: How We Built a Maintainable...

Chaos Computer Club - recent events feed ·

2025/10/18

Tammy is a multiplatform Matrix Messenger designed to be redefined by you. Want a different room list layout? Need a messaging interface tailored to a specific use case? Tammy’s extensible architecture makes that not only possible - but easy. In this talk, we’ll showcase how Tammy empowers developers to create radically customized Matrix experiences through its extension system. We’ll walk you through how we’re using Tammy to build Timmy, a TI-Messenger variant tailored for a very specific user

00:25:30

Building Matrix-Powered Campus Communication Platform...

Chaos Computer Club - recent events feed ·

2025/10/18

In this talk I will present my journey in developing a decentralized and secure communication platform for a university with thousands students and faculty members. Using Matrix and Element as foundation I tailored the solution to meet academic needs, ensure data privacy and integrate with some systems, bots, widgets etc. The session will cover: - Why Matrix was chosen over other platforms. - Technical stack and deployment model. - Customization of Element and federation decisions. - Challenges

00:25:56

Schulchat RLP as [matrix]-based school messenger...

Chaos Computer Club - recent events feed ·

2025/10/18

fairkom has developed a [matrix]-based school messenger for the Department of Education of the German state of Rhineland-Palatinate to serve up to half a million users. Schulchat RLP has one code base for all platforms and is available as app on Apple and Google Play Stores.What makes this solution unique is the deep integration of the identity and user management system from the "Bildungsportal RLP", ensuring seamless use for teachers, students, and even parents - from primary to vocational

00:02:13

Closing - Day 2 (sps25)

Chaos Computer Club - recent events feed ·

2025/10/17

A thank you from the organisers. We hope you enjoyed your day! about this event: https://talks.python-summit.ch/sps25/talk/QW7U3F/

00:45:20

Lightning Talks - Day 2 (sps25)

Chaos Computer Club - recent events feed ·

2025/10/17

Our Lightning Talks are open to everyone 😊 about this event: https://talks.python-summit.ch/sps25/talk/VG8HT8/

00:32:27

What Networks tell us about Trades, Power, and the...

Chaos Computer Club - recent events feed ·

2025/10/17

Networks are all around us, shaping phenomena like epidemics, communication, and transportation. In this talk, we will explore how real-world problems can be analyzed and solved using graph-based methods and simple algorithms. Drawing from examples such as trade networks, corporate structures, and historical data, I will demonstrate how network analysis reveals insights that would otherwise remain hidden. Using NetworKit (and NetworkX), we will analyze real-world datasets to answer questions like:

00:33:53

Gompertz Linear Units (GoLU) (sps25)

Chaos Computer Club - recent events feed ·

2025/10/17

Activation functions are fundamental elements of deep learning architectures as they significantly influence training dynamics. ReLU, while widely used, is prone to the dying neuron problem, which has been mitigated by variants such as LeakyReLU, PReLU, and ELU that better handle negative neuron outputs. Recently, self-gated activations like GELU and Swish have emerged as state-of-the-art alternatives, leveraging their smoothness to ensure stable gradient flow and prevent neuron inactivity. In this

00:38:23

Supporting TF-X with Matrix: best practices and...

Chaos Computer Club - recent events feed ·

2025/10/17

NATO organised a TaskForce-X Baltics event where we very quickly contracted, deployed and integrated telemetry and video streams from uncrewed platforms. This required a lot of coordination and this was done through our on-prem Matrix capability. I would like to share my experience by using Matrix to support this very demanding operational project. Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event:

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