Best Ccc Congress Hacking Security Netzpolitik Podcasts (2025)

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Variational Autoencorders: the cognitive scientist's favorite deep learning tool (realraum) 41:56

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3d ago41:56

41:56

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 cognit…

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Closing (matrix-conf-2025) 23:45

9d ago23:45

23:45

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/By Yan Minagawa

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Holding the Fort: How did bridges happen (matrix-conf-2025) 27:44

9d ago27:44

27:44

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 bee…

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Leading the way into CRA compliance: Element’s approach to the incoming regulation (matrix-conf-2025) 30:13

9d ago30:13

30:13

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…

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How do messaging app users feel about untraceability? (matrix-conf-2025) 54:14

9d ago54:14

54:14

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…

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Getting started with Element Server Suite Community (matrix-conf-2025) 14:05

9d ago14:05

14:05

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 …

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A Contextual Integrity approach to privacy in interoperable messaging (matrix-conf-2025) 31:43

9d ago31:43

31:43

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 appropri…

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Scaling Real-Time in NeoBoard: Our Journey from P2P to MatrixRTC + LiveKit (matrix-conf-2025) 18:14

9d ago18:14

18:14

[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 clientIn this talk, we’ll share how we migrated NeoBoard’s real-time …

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Integrating Matrix in a trustworthy collaborative ecosystem (matrix-conf-2025) 23:08

9d ago23:08

23:08

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 chos…

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Portable identites (MSC 2787) and the GDPR right to rectification, a pressing need for server operators (matrix-conf-2025) 47:04

9d ago47:04

47:04

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 inadeq…

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Solving the Fork Dilemma: How We Built a Maintainable Matrix Messenger (matrix-conf-2025) 51:52

9d ago51:52

51:52

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 experience…

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Building Matrix-Powered Campus Communication Platform Thousands Students (matrix-conf-2025) 25:30

9d ago25:30

25:30

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:- Wh…

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Schulchat RLP as [matrix]-based school messenger (matrix-conf-2025) 25:56

9d ago25:56

25:56

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…

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Closing - Day 2 (sps25) 2:13

10d ago2:13

2:13

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

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Lightning Talks - Day 2 (sps25) 45:20

10d ago45:20

45:20

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

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What Networks tell us about Trades, Power, and the World? (sps25) 32:27

10d ago32:27

32:27

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 ana…

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Gompertz Linear Units (GoLU) (sps25) 33:53

10d ago33:53

33:53

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 a…

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The Role of the Matrix Protocol within Germany’s Sovereign and Secure Health Messenger Solution – A Loyal Player Embracing the Evolution of Secure Architectures (matrix-conf-2025) 25:46

11d ago25:46

25:46

Germany’s digital health infrastructure has long been built on the principles of sovereignty, open standards, and interoperability. With the electronic patient record (ePA) and KIM for secure data and document exchange, Germany established a federated ecosystem using standards such as FHIR and OIDC with sectoral identity providers. The recent intro…

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Supporting TF-X with Matrix: best practices and pitfalls (matrix-conf-2025) 38:23

10d ago38:23

38:23

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.…

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The Matrix SDK No One Talks About (matrix-conf-2025) 26:13

10d ago26:13

26:13

Trixnity is rapidly emerging as a powerful, flexible, and fully asynchronous SDK for building Matrix applications using Kotlin Multiplatform. What many don't realize: Trixnity is already in widespread use - potentially powering apps usable by over 50 million people. It’s embedded in multiple Matrix-based messengers, though you’d only know it by dig…

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Anonymization of sensitive information in financial documents (sps25) 31:17

10d ago31:17

31:17

Data is the fossil fuel of the machine learning world, essential for developing high quality models but in limited supply. Yet institutions handling sensitive documents — such as financial, medical, or legal records often cannot fully leverage their own data due to stringent privacy, compliance, and security requirements, making training high quali…

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Why do I have 2 passwords? How to talk about encryption in Matrix (matrix-conf-2025) 50:15

10d ago50:15

50:15

Most modern software applications give total trust to the service provider. End-to-end encrypted (E2EE) services are different: the service provider is a gateway, and the real trust is with other people.This is unfamiliar, and can make using E2EE confusing. When you add in federation (meaning lots of different service providers) and a diverse set o…

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Element X and Pro Updates (matrix-conf-2025) 41:17

10d ago41:17

41:17

We will provide you with the latest updates on Element X mobile apps, as well the plan to sunset our classic Element apps. This includes both the current state, as well as a look into what to expect during the next couple of months and details about specific features like threads and spaces that many people are looking forward to on Element X. In t…

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MatrixRTC - The key sharing problem (matrix-conf-2025) 17:48

10d ago17:48

17:48

Why is having large encrypted group calls difficult? How do other providers solve this? The future? Demos!Why are large encrypted group calls difficult to host? Specifically, we will go into the details about key sharing, how we can use some tricks to optimize it and how they are also a very big footgun.We will also see how other providers like jit…

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Agentic Cyber Defense with External Threat Intelligence (sps25) 25:46

10d ago25:46

25:46

This talk will detail how to integrate external threat intelligence data into an autonomous agentic AI system for proactive cybersecurity. Using real world datasets—including open-source threat feeds, security logs, or OSINT—you will learn how to build a data ingestion pipeline, train models with Python, and deploy agents that autonomously detect a…

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Secure and Sovereign communications for United Nations International Computing Centre and its Partners (matrix-conf-2025) 14:53

10d ago14:53

14:53

Secure communication leveraging the Matrix protocol for UNICC and its partnersLicensed to the public under https://creativecommons.org/licenses/by-sa/4.0/about this event: https://cfp.2025.matrix.org/matrix-conf-2025/talk/WM9WAE/By Tima Soni

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Joining the conversation: balancing privacy with usability for encrypted messages (matrix-conf-2025) 50:29

10d ago50:29

50:29

Being able to read the conversation in a room before you joined is a critical feature for some usecases, but end-to-end encryption makes it tricky to implement.In this technically-focussed talk, we'll cover the challenges behind implementing "history sharing", why previous attempts in this area failed, and how we solved those problems with minimal …

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MatrixRTC (matrix-conf-2025) 53:32

10d ago53:32

53:32

In this talk, we will share the newest improvements to MatrixRTC. We'll focus on how the security and encryption architecture has evolved to provide robust, private communications for Matrix users. Additionally, we will show how to integrate Element Call into clients using the Rust or JS-SDK in a matter of minutes. Whether you're building a custom …

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Matrix French gov deployment: opening a private federation securely (matrix-conf-2025) 22:05

10d ago22:05

22:05

The French government has deployed a private Matrix federation for French civil servants called Tchap.Currently this federation has about 300 000 monthly active users and its usage is growing constantly.Today our federation is closed and we would like to be able to connect with other public French Matrix nodes (local authorities for instance), and …

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No Desk Is an Island: Enabling Cross-Border Workspace Communication (matrix-conf-2025) 39:38

10d ago39:38

39:38

As EU member states (co-)develop sovereign workspace solutions for the public sector, the need for seamless communication between these platforms becomes increasingly important. France, Germany, and the Netherlands are among the countries working on such solutions together, with the goal of facilitating cross-border collaboration and data exchange …

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Invisible Crypto: can Matrix be both secure and easy to use? (matrix-conf-2025) 51:15

11d ago51:15

51:15

The Invisible Crypto initiative intends to make Matrix easier to use by ensuring that encrypted messaging is secure by default, and the user is not bothered by irrelevant information.In this talk we will give a status update, hopefully explaining why crypto needed to become slightly more visible on the journey towards making it disappear.We'll go i…

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Rocket.Chat: Entering the Matrix (matrix-conf-2025) 51:50

10d ago51:50

51:50

In this talk, we trace the journey of evolving Rocket.Chat from a standalone collaboration server into a full-fledged Matrix home-server — all built in TypeScript. We’ll dive into the architecture decisions, the incremental features (federation, room state sync, identity translation, event routing, crypto, and bridging), and the real challenges of …

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Docling: Get your documents ready for generative AI (sps25) 33:08

11d ago33:08

33:08

Docling is an open-source Python package that simplifies document processing by parsing diverse formats — including advanced PDF understanding — and integrating seamlessly with the generative AI ecosystem. It supports a wide range of input types such as PDFs, DOCX, XLSX, HTML, and images, offering rich parsing capabilities including reading order, …

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Causal ML for Smarter Advertising Campaigns with Python (sps25) 33:15

11d ago33:15

33:15

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 a…

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Lessons learned from implementing Native OIDC from scratch (matrix-conf-2025) 27:04

11d ago27:04

27:04

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 Ru…

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Improving the security of the federation protocol (matrix-conf-2025) 49:26

11d ago49:26

49:26

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, part…

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ESS - Element’s distribution for Matrix deployments (matrix-conf-2025) 57:36

10d ago57:36

57:36

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 Pr…

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AI Coding Agents and how to code them (sps25) 34:32

11d ago34:32

34:32

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 tal…

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How Matrix is becoming the communication standard for Public Sector (matrix-conf-2025) 14:58

11d ago14:58

14:58

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 te…

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Machine learning for Swiss democracy (sps25) 34:24

11d ago34:24

34:24

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 argumen…

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Luxchat(4gov) (matrix-conf-2025) 20:43

11d ago20:43

20:43

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/…

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Element X Web (matrix-conf-2025) 42:28

11d ago42:28

42:28

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…

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Eventually Consistent Access Control: Practical Insights on Matrix from Decentralized Systems Theory (matrix-conf-2025) 51:39

11d ago51:39

51:39

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…

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Welcome - Day 2 (sps25) 6:25

11d ago6:25

6:25

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/By Orga

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Governing Board transparency update (matrix-conf-2025) 24:27

11d ago24:27

24:27

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 questionsLicensed…

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The Element update: Shininess, scalability and sustainability (matrix-conf-2025) 25:03

11d ago25:03

25:03

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://creativecomm…

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Closing - Day 1 (sps25) 2:00

12d ago2:00

2:00

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

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Lightning Talks - Day 1 (sps25) 41:46

12d ago41:46

41:46

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

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Using Python's array API standard for ESA's Euclid mission (sps25) 30:18

12d ago30:18

30:18

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, t…

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The High Price of Open Source: Building a Business Around Matrix (matrix-conf-2025) 36:16

12d ago36:16

36:16

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, especi…