Chaos Computer Club - archive feed

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...

Can Matrix compete with Big Tech? That remains an open question - but the market conditions in Europe have never been more favorable to sovereign, European software solutions. So how do we build commercially sound companies based on Matrix? This talk will focus on real-world use cases, showcase features built for public-sector customers, explore viable business models, and share hard-earned lesson...

In this talk we will introduce Synapse Pro, the Matrix server for professional environments from Element. Synapse Pro is built to support professional Matrix deployments in terms of scalability, efficiency and high availability. It comes in two flavours, Synapse Pro for Small Hosts and Synapse Pro for Large Hosts. The Small Hosts solution introduces multi-tenancy capabilities in order to host plen...

The BundesMessenger is the soverein communication solution for the German government and armed forces. Developed to be robust, secure and interconnected it serves as the basis for collaboration in the public sector. With a sharp focus on user experience, an uncompromised commitment to free and open-source software and state-of-the-art deployment of cloud technologies, it brings a high-quality mess...

On July 15, 2025, Germany’s statutory health insurance funds will introduce the Matrix-based instant messaging service TI-M (Telematikinfrastruktur Messenger) into their electronic patient record (ePA) apps. This marks a significant milestone, as Matrix-based messengers will become potentially available to 74 million insured individuals across Germany. This talk will provide an overview of the nat...

Element Call, the flagship MatrixRTC application by Element, is shaping the future of secure, federated calling. As the successor to the traditional call system in Element apps, it now powers large-scale, end-to-end encrypted (E2EE) group calls with improved reliability and seamless federation support. This talk follows up on last year’s introduction of Element Call, showcasing a year of rapid inn...

Nobody likes fax machines, yet everyone still uses them – that's the reality in German hospitals. Since 2019, Famedly has been challenging this status quo. With our TI Messenger, built on the Matrix protocol, we've created a secure and decentralized alternative. Learn how we're using and extending Matrix to modernize communication in the German healthcare system. Licensed to the public under https...

Our project's main goal was to fill a gap by developing a telephony bridge that natively integrates XiVO enterprise telephony (based on SIP) within the alternative and open-source Matrix/Element ecosystem. Our focus with this bridge is to offer a credible and high-performing alternative to dominant proprietary solutions, such as Teams and its "Telephony System" licenses. XiVO SIP bridge project pr...

The German public administration aims to consolidate its disparate solutions for G2C and G2B communications and transition to a unified yet decentralized Matrix-based infrastructure. In this talk we will dive into this new federal infrastructure’s target architecture and explore its key requirements, drivers and architecture decisions – including the crucial choice of Matrix as the E2EE communicat...

Last year, we introduced NeoToolSuite, Nordeck’s productivity suite of Matrix widgets designed for efficient collaboration and communication. This year, our focus shifts to our flagship product: NeoBoard Standalone. This real-time collaborative whiteboard matrix client has evolved through continuous development and iteration and now it features an immersive infinite canvas that redefines what’s po...

European healthcare communication is at a turning point. Fragmented national systems are reaching their limits, while the need for interoperable, secure, and user-friendly digital spaces across borders continues to grow. This talk explores how the open-source Matrix protocol has become a strategic foundation for secure messaging in healthcare — powering derived solutions like TI Messenger and CGM...

Twenty seconds is a long time when someone can’t breathe. At ESA´s LUNA Analog Facility we turned that reality into a design constraint: a moonwalk emergency with voice cut by design, Matrix/Element carrying clinical guidance across a built-in one-way delay. We tested two styles of instant messaging, open free-text versus a tiny, structured grammar, to coordinate assessment, treatment, and evacuat...

In this presentation, we will examine processes within the German healthcare system and explore the underlying structural challenges that make intersectoral communication so difficult. We will discuss why Matrix is the ideal protocol for the foundation of this infrastructure and explain how we build upon the Matrix specification to meet healthcare-specific requirements. Special insights will be sh...

MLS and Matrix don't mix well. But why is that and what can we do about it? Since I got to touch that area a bit, I'll try to give some answers, but don't expect solutions. We will be looking how MLS and Matrix work internally, how a tree is a DAG but a DAG not a tree and maybe we will have some glorious idea or get frustrated. No promises! Licensed to the public under https://creativecommons.org/...

For decades, government agencies have relied on proprietary, siloed communication systems. Today, several Swedish initiatives are exploring new paths forward. First, we will provide details on the latest developments within SAFOS, a service designed to establish a potential national standard for secure messaging, video conferencing, and real-time collaboration. Second, we will share insights from...

In this talk, we’ll take you through the real-world journey of developing and approving a TI-Messenger - a secure, interoperable messaging application built on top of the Matrix protocol for use within Germany’s healthcare system. What began as am idea soon grew into a tightly regulated, multi-stakeholder project, with high demands on privacy, trust, and compliance. This session is less about feat...

With the TI-Messenger, built on the Matrix protocol, Famedly has enabled secure and interoperable communication across the German healthcare system, from hospitals to pharmacies. Adoption is growing rapidly, with millions of potential users on the horizon. In this opening talk, we’ll look back at TIM’s journey so far, highlight its impact and adoption, and then take a step beyond healthcare into t...

[matrix] as an end-to-end encrypted communication standard has its flaws. Flaws in privacy, flaws in complexity. With the standard of Messaging Layer Security (MLS), the [matrix] ecosystem has the opportunity to address old flaws, rethink room state and increase interoperability. In this talk, I will provide a beginner's guide on challenges of [matrix] 3.0. > Messaging Layer Security (RFC 9420, ML...

Since 2024, the Swiss federal government has been obliged by the new EMOTA law to publish all its software under open source licenses. This new 'Federal Act on the Use of Electronic Means to Conduct Official Tasks' (EMOTA) has had an impact on IT procurement and open source activities in Switzerland. By encouraging the creation of open source communities, the law reduces vendor lock-in and strengt...

As project lead of Matrix, Matthew gives a snapshot of where the project is at. Highlights should include: * Overview of recent high-profile Matrix deployments and uptake * Overview of the recent major projects to fix state resets and improve decentralisation reliability * Overview of making Matrix a safer place via improved Trust & Safety work * Progress on Matrix 2.0 MSCs (Next Gen Auth, Sliding...

This session will present the latest updates from the Foundation itself, and the progress it has made in standing on its own legs during the last 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/3RXLTQ/

Welcome 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/CL3HJB/

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event: https://c3voc.de

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event: https://c3voc.de

Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event: https://c3voc.de