Chaos Computer Club - archive feed

Browser capabilities have exploded in the past years and with it the possibilities to run large applications without the need of additional software. Still when combining interaction and visualization of larger datasets the number of nodes such as with SVG becomes quite difficult to handle (limited resources). That is why we have been experimenting with solutions to make use of WebGL, mixing rendering and maintaining interaction. In order to be able to render scientific data (as read by geotiff.js) we have developed plotty (https://github.com/santilland/plotty). This tool allows us to quickly colorize and render the data using a shader, making it possible to create interactive and explorable animations. For further data analysis, such as evolution curves through time or larger and complexer plots we have been working on graphly (https://github.com/EOX-A/graphly). In this case for us it was imperative to maintain complex interactivity while using rendered images. This was achieved by combining a second canvas which keeps unique identifier colors for the objects. We would like to present our concepts and experiences of the developed tools. None about this event: https://talks.2019.foss4g.org/bucharest/talk/CDRBHF/

To be INSPIRE compliant is a requirement implied by the European Union. From an administrative view, the desire for standardized data for aggregation is very comprehensible. Producing and delivering data that complies with these requirements comes with a great set of challenges but is key to bring any such system to success. In Switzerland the same requirements exist for standardization and aggregation. To reach this goal, a system with the name INTERLIS is developed for more than two decades already. During this time, a rich ecosystem has started to exist which builds bridges from a formal model all the way to the user interface with tools like ili2db and QGIS Model Baker. All of this built with open source tools that are accessible for anyone. This talk will give an overview over a state of the art toolchain that helps data providers to produce high quality data which can keep up with national and international data requirements. None about this event: https://talks.2019.foss4g.org/bucharest/talk/PK8VZB/

This presentation will provide the attendee with an introduction to data processing in GeoServer by means of WPS, rendering transformations and SQL views, describing real applications and how these facilities were used in them. We'll start with the basic WPS capabilities, showing how to build processing request based on existing processes and how to build new processes leveraging scripting languages, and introducing unique GeoServer integration features, showing how processing can seamlessly integrate directly in the GeoServer data sources and complement existing services. Moreover, we will show how to integrate on the fly processing in WMS requests, achieving high performance data displays without having to pre-process the data in advance, and allowing the caller to interactively choose processing parameters. While the above shows how to make GeoServer perform the work, the processing abilities of spatial databases should not be forgotten, so we will show how certain classes of processing can be achieved directly in the database. At the end the attendee will be able to easily issue WPS requests both for Vectors and Rasters to GeoServer through the WPS Demo Builder, enrich SLDs with on-the-fly rendering transformations. None about this event: https://talks.2019.foss4g.org/bucharest/talk/JKQFR8/

This abstract focuses on the Resilience Academy which represents the commitment of the World Bank to improve Tanzania’s skill base and to maximize the impact and sustainability through the establishment of university partnerships that transfer skills and risk management tools to the next generation. The Resilience Academy concept embraces the idea that supports the development and sustainability of geospatial and urban resilience competencies in Tanzanian universities and thus enhances the sustainability of digital data set management and eventually risk management practices in Tanzania. None about this event: https://talks.2019.foss4g.org/bucharest/talk/XAFQB9/

The GeoExt project [1] is a JavaScript library combining the OpenLayers mapping library [2] and the JavaScript framework ExtJS [3]. The talk will give a brief history of the project, and a summary of its dependencies and versions. Several new features recently developed for the latest GeoExt release will be presented. The talk will include an overview of two more Open Source JavaScript libraries which bring additional power and functionality to GeoExt: BasiGX [4] and GeoStyler [5]. BasiGX is a higher-level JavaScript library that builds on top of GeoExt and focusses on advanced GIS user interfaces and mapping tools for the web. GeoStyler is a JavaScript library for cartographic styling of geodata, and can be combined with a GeoExt solution to apply several formats to layers, e.g. SLD (Styled Layer Descriptor) files. The talk will include examples of real-world projects using GeoExt, along with recommendations on what types of projects are most suitable to develop them using GeoExt and its associated technologies. Finally a roadmap for the future of GeoExt will be outlined along with how developers and users can get involved. None about this event: https://talks.2019.foss4g.org/bucharest/talk/FNANSU/

OSM has long since established itself as the leading global street database. Interactive multi-resolution 3D-globe-streaming technology has been around for quite some time. Yet little effort has been made so far to create a global OSM-based 3D street map. In this talk we will show how OSM, vector tiles and VTS Geospatial can work together to create a global 3D street map based purely on open data and on open-source technology. The crucial steps of data provisioning, 3D map design and visual styling will be elaborated. None about this event: https://talks.2019.foss4g.org/bucharest/talk/SVGVBK/

During the last decades, production of Land Cover maps (LC) at a continental and global scale has increased thanks to the progress in Earth Observation capacities, as well as due to high demand for these maps for many applications (e.g. climate change monitoring). However, the usefulness of these maps strongly depends on their accuracy. Therefore, for a fruitful LC maps exploitation, accuracy assessments (i.e. validation and inter-comparison) must antedate. Spatial analysis of the errors should then complement the accuracy assessment to provide insights into the local errors patterns which may not be outlined by traditional accuracy assessment techniques. According to this, we propose here a comprehensive analysis to target accuracy of LCs by focusing on the African continent. Two datasets, GlobeLand30 (GLC30) at and CCI Land Cover - S2 Prototype Land Cover 20m Map Of Africa (CCI Prototype Africa), at 30m and 20m resolution respectively, were considered. Inter-comparison was performed by means of traditional accuracy indexes computed from the error matrix (i.e. Overall Accuracy, Producer’s and User’s accuracy etc). Harmonization of the two maps in terms of resolution and classification nomenclature is prerequisite for inter-comparison. This was achieved by taking advantage of QGIS functionalities (e.g. resampling). Results of the accuracy assessment provide overall quality metrics for the map as well as quality indicators for each LC class. Additionally, spatial association statistics were adopted to investigate local patterns of the errors. The analysis was performed by means of GRASS and custom developed Python scripts exploiting cutting-edge data analysis libraries such as Pandas, Dask, and PySAL. By “virtual” overlaying CCI with GLC30, we computed which classes of CCI are under each pixel of GLC30, and what is the pixel fraction of a CCI class at each GLC30 pixel. Results of the overlay were stored in a vector point file whose coordinates represent centers of pixels of GLC30. If the classes of GLC30 and CCI for a point are not the same this results in an error with magnitude represented by the pixel fraction itself. Error fractions at each GLC30 pixel were analysed by means of Local Indicators of Spatial Association (LISA) to map non-random pattern in the spatial distribution of the errors as well as to assess their intensity and spatial association typology. By considering the results of accuracy assessment and LISA outputs, a comprehensive comparison of the GLC30 or CCI Prototype Africa is achieved. The results provide a guideline for detecting source of the error, which is potentially useful for future LC production (i.e. sampling design of training data). Lastly, it has been demonstrated that processing of massive datasets for accuracy assessment can be accomplished with Free and Open Source Software (FOSS). None about this event: https://talks.2019.foss4g.org/bucharest/talk/YJ8KJS/

Initially called GRaaS (GRASS as a Service), actinia has been developed to exploit GRASS GIS functionality via HTTPS REST API. GRASS locations, mapsets, vector and raster data as well as spatio-temporal data are available as resources to allow their management and visualization. With the existing (e.g. Landsat) and also recently emerging (Copernicus Sentinel) big geodata pools which are growing day by day, it is designed to follow the purpose of bringing algorithm to cloud geodata. It helps to prepare, analyse and provide a large amount of geoinformation without the need to have know-how of the data, of analysis, appropriate software (for automatisation) or scalable hardware resources. Some of the features are persistent and ephemeral processing, user management to limit e.g. pixels, processes and duration of calculations as well as logging of API calls and used resources by each user. Another advantage is its easy deployment with docker. When deployed in a cloud based environment with OpenShift or docker-swarm, the integrated load balancer handles a cluster automatically. Following the spirit of free and open software, we are proud to have emerged as an OSGeo community project and look forward to enlarge the actinia community. None about this event: https://talks.2019.foss4g.org/bucharest/talk/GCNPMC/

Mapillary’s computer vision extracts point data from street-level images, with these detections being used to fix and update maps. Earlier this year, Mapillary worked with OpenStreetMap communities to turn automatic computer vision detections into better map data. This was an insightful project that showed us which detections were useful for the OpenStreetMap community and end users. It’s also an early step to create a feedback loop where humans provide input to help us improve the quality and relevance of automatically derived features. None about this event: https://talks.2019.foss4g.org/bucharest/talk/LM3CLQ/

Mapillary SDKs enable any developer to easily build apps with functionality for geotagged image capture, Mapillary authentication, and uploading to Mapillary. In this session, we will explore the SDKs, demo some Mapillary apps that are built on the SDKs, and look at how these apps are being used to solve real-world challenges. None about this event: https://talks.2019.foss4g.org/bucharest/talk/3JMYHJ/

It is a common thing when pattern analysis cases are just about visualizing the features. The talk would start with a gentle introduction into pattern analysis algorithms. I would focus on the benefits of using analysis in comparison to visualizing methods, present cases and show pitfalls in usage and implementing these algorithms. None about this event: https://talks.2019.foss4g.org/bucharest/talk/7Y8KUQ/

A comprehensive look behind the scenes of HERE XYZ to demonstrate the components starting with the approachable, browser-based Studio to build maps, large data management operations with CLI all the way to developer APIs. You’ll discover the history of XYZ, what projects currently run on the service and the ongoing process of making it open source. Learn about our vision of collaboration with the community by offering both HERE and OSM map data on XYZ. None about this event: https://talks.2019.foss4g.org/bucharest/talk/9TTYAH/

2018 saw the release of [Julia](https://julialang.org/) 1.0, a high-level, high-productivity programming language, with the performance of a low-level language like C. That means looping over all features or cells and applying your own functions is encouraged. The [JuliaGeo](http://juliageo.org/) organization was first started in 2015 to provide support for working with geospatial data in the Julia programming language. JuliaGeo currently provides high-level APIs with comprehensive support for OSGeo libraries like GDAL, GEOS and PROJ. In this talk, we introduce Julia and the JuliaGeo packages, showcase interactive workflows, and talk about next steps. None about this event: https://talks.2019.foss4g.org/bucharest/talk/DH8CQR/

This talk introduces the integration and possibilities of Python within and around QGIS in its latest version. Being an introductory talk it is not aimed at developers but much more at [future] QGIS users that would like to know what possibility exists for customizing your workflows thanks to PyQGIS. The presentation will brush the following topics: * Integration of Python in the latest version of QGIS * what can be done with Python in QGIS - chances and limits * Python console and scripts in QGIS * Plugins with Python * Macros with Python * Python in forms * Custom python expressions * Geoprocessing with Python within QGIS None about this event: https://talks.2019.foss4g.org/bucharest/talk/WTRBY8/

The walls of CCC Berlin are filled with posters, analog as well as digital art, and also: a large LED display! The display is a proper piece of dual-use technology, serving both as hack material for fun and as a useful tool e.g. for taking notes during meetings. Come join us on a technology tour through the history of this fun piece of kit, starting with a look at the original hardware and software architecture and moving on through the many following software, hardware and mechanical hack generations in and around the display. The display has come quite far. Originally one could watch individual characters render on the 71680 LEDs, now 35 fps video playback is effortless, and it functions as a hub for collaborative visual expression using both text and graphics. Key words: 6502, CSS, Ethernet, ATXMEGA, JavaScript, Cortex-M3, WebSockets, AM335x, BeagleBone Black, PRU, Etherpad, CNC machining, Aluminium Welding about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10339.html

TBD Die Erosion von Grundrechten schreitet überall in Europa voran, besonders deutlich wird dies anhand der Situation auf dem Mittelmeer. Hier geht es um die aktuelle Lage, darum dass die Bundesregierung genauso verantwortlich dafür ist wie Benito Salvini und um Strategien und was wir gemeinsam dagegen tun können - außer noch mehr Racketen auf dem Mittelmeer zu stationieren. about this event: http://talx.thm.cloud/thms/talk/TX3WKW/

Are you curious about making your own video game? Game jams are a brilliant opportunity to try that, and a fun challenge for interdisciplinary teams of all skill levels! They're basically hackathons, but for video games - you're given a certain theme, and are encouraged to make a game around that in two or three days. In this talk, I want to empower and inspire you to try that yourself! When I first joined in the large, international game jam "Ludum Dare" in 2016, I found it a very rewarding experience, that got me in a flow-like state of mind. I liked it so much that I've since participated 10 times in a row - at this point, I have tons of experience, which I want to share with you! This talk is split into three parts: First, I'll quickly go over the history of game jams, and introduce you to some of the largest ones, like Ludum Dare and the Global Game Jam. Second, I'll talk about my personal experience with game jams: I'll explain how I got into it, and showcase some games I worked on! I'll also share the development process behind them, and reflect on what went well and what didn't. And finally, I want to empower you to try this for yourself. Specifically, I'll explain how the "Ludum Dare" game jam works, and share some tips, tricks, and resources I have assembled over the years, that would have been useful for myself as I just was starting out. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10278.html

The power of Facebook derives from its control over your digital identity. However, the fundamental technologies behind anonymous (attribute-based) authentication credentials have existed since the mid-90s. This talk will cover new advances in anonymous authentication credentials, how the work was nearly killed by Facebook, and their real-world implementation, including their use in the Nym project's mix-net, cryptocurrency, and decentralized messaging applications. How do we pratically defeat Facebook and build an anonymous internet? Let's start with the building blocks: Getting rid of Facebook Connect using decentralized and privacy-enhancing technologies, then using that as a lever to build the rest of the system. Anonymous authentication credentials have existed since early blind signature schemes, but have historically been both inefficient and required centralized (if often blind!) trusted third parties. New advances such as UnlimitID and the Coconut signature scheme have allowed the creation of "Nym credentials" that are both decentralized and privacy-preserving. We'll go into three use-cases: <li><b>Mix-networks</b> Credentials allow mix-nets, which provide anonymity at the network level in even a stronger manner than Tor, to both avoid spam (sybil) attacks and grow in a robust, decentralized manner, avoiding the need of proof of work algorithms.</li> <li><b>Messaging</b> In combination with the new IETF MLS (Message Layer Security) protocol to replace Signal, anonymous authentication credentials can enable a more privacy-preserving messenger.</li> <li><b>Cryptocurrency</b> If Facebook is building Libra, we'll show how we can take their fundamental design and make it - or any other cryptocurrency - privacy--preserving using Nym credentials</li> Lastly, we'll review how we build the initial work using European Commission funding from NEXTLEAP and PANORAMIX, how Facebook nearly killed the project, and now how we are building from both non-profit and private sector sources, including hiring ex-Facebook employees to work on privacy. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10317.html

This talk aims to provide a possible explanation why most people seem to care very little about the unethicality of much of today’s technologies. It outlines what science and philosophy tell us about the biological and cultural evolutionary origins of (human) morality and ethics, introduces recent research in moral cognition and the importance of moral intuitions in human decision making, and discusses how these things relate to contemporary issues such as A(G)I, self-driving cars, sex-robots, “surveillance capitalism”, the Snowden revelations and many more. Suggesting an “intuition void effect” leading standard users to remain largely oblivious to the moral dimensions of many technologies, it identifies technologists as “learned moral experts”, and emphasizes their responsibility to assume an active role in safeguarding the ethicality of today’s and future technologies. Why is it that in a technological present full of unethical practices – from the “attention economy” to “surveillance capitalism”, “planned obsolescence”, DRM, and so on and so forth – so many appear to care so little? To attempt to answer this question, the presentation begins its argument with an introduction into our contemporary understanding about the origins of (human) morality / ethics. From computational approaches a la Axelrod’s Tit for Tat, Frans De Waal’s cucumber-throwing monkeys and Steven Pinker’s “Better Angles of our Nature”, to contemporary moral psychology and moral cognition and these fields’ work on moral intuitions. As research in the last couple of decades in these fields suggest, it appears that much, if not most of (human) moral / ethical decision making is based on moral intuitions rather than careful, rational reasoning. Joshua Greene likens this to the difference between the “point-and-shoot” mode and the manual mode of a digital camera. Jonathan Haidt uses a metaphorical elephant (moral intuition) and his rider (conscious deliberation) to emphasize the difference in weight. These intuitions are the result of both biological and cultural evolution – the former carrying most of the weight. The problem with this basis for our moral decision making is, as this presentation will argue, that we have not (yet) had the time to evolve (both culturally and biologically), “appropriate” moral intuitions towards the technologies that surround us everyday, resulting in an “moral intuition void” effect. And without initial moral intuitions in the face of a technological artifact, neither sentiment nor reason may be activated to pass judgment on its ethicality. This perspective allows for some interesting conclusions. Firstly, technologists (i.e. hackers, engineers, programmers etc.) for one, who exhibit strong moral intuitions toward certain artifacts have to be understood as “learned moral experts”, whose ability to intuitively grasp the ethical dimensions of a certain technology is not shared by the majority of users. Secondly, users cannot be expected to possess an innate sense of “right and wrong” with regards to technologies. Thirdly, entities (such as for-profit corporations) need to be called out for making deliberate use of the “moral intuition void” effect. All in all, this presentation aims to provide a tool for thinking that may be put to use in various cases and discussions. It formulates the ethical imperative for technologists to act upon their expertise-enabled moral intuitions, and calls for an active “memetic engineering process” to “intelligently design” appropriate, culturally learned societal intuitions and responses for our technological present and future. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10251.html

Zentrum für politische Schönheit Das Holocaustmahnmal Bornhagen des Zentrums für Politische Schönheit veranlasste den Kaisertreuen Staatsanwalt Martin Zschächner gegen jene Gruppe als "kriminelle Vereinigung" zu ermitteln - bzw: nicht zu ermitteln. Wie kam das Zentrum auf eine Liste mit der Al-Nusra-Front und was macht Zschächner heute? Eine reise in den tiefen rechten Sumpf der Thüringer Justiz. about this event: http://talx.thm.cloud/thms/talk/QHMZQM/

The beautifully complex structures often found in Nature arise from the collective interaction of huge numbers of particles moving under very simple forces. Starting from this fact, I will present how we can encode simple physical properties into large scale networks in a way that mimics a physical system and leads to elegant structures in 2d or 3d space. After introducing some basic concepts, a large part of the talk will consist of animated demonstrations of network evolution towards a final layout. The talk is aimed at scientists and curious non-scientists alike. Large networks (graphs) appear in many types of human activity: computer, social, transportation, biological, and other networks that model the various connections and interactions in a system. Networks are often depicted visually as sets of points on a plane connected by lines - at large scales however, this image becomes too difficult to interpret due to high density of points and/or too many line crossings. So it is essential to determine an ideal placement of the network's parts in order to reveal its structure in the most clear and informative way. The laws of physics inherently contain dynamics capable of creating aesthetically appealing arrangements of high complexity, as can be seen in snowflakes, soap bubbles, crystals, or molecules in 3d space. By encoding physical qualities and dynamics in a network, we can leverage the laws of motion and the corresponding forces to let them shape the network. As the network is now acting like a physical system, it evolves towards a configuration of minimum energy and reaches a final state that exposes the symmetries, connected parts, and other features, in analogy to the wonderfully complex structures found in Nature. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10352.html

about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10390.html

A farewell. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10387.html

Freifunk steht vor dem Abgrund, der Flash ist voll, der RAM ist zu klein, so löt doch einfach neuen ein? Wir betrachten hier die aktuellen Probleme die viele Communities mit ihrer Hardwarebasis erleben und betrachten die Vor- und Nachteile der verschiedenen Wege, diese Probleme zu lösen. Freifunk steht vor dem Abgrund, der Flash ist voll, der RAM ist zu klein, so löt doch einfach neuen ein? Wir betrachten hier die aktuellen Probleme die viele Communities mit ihrer Hardwarebasis erleben und betrachten die Vor- und Nachteile der verschiedenen Wege, diese Probleme zu lösen. Dabei schauen wir uns zurerst die aktuelle Entwicklung auf dem WLAN-Hardwaremarkt an und welche Unterstützung Gluon bereits für Moderne WLAN-Hardware bietet, wie man selber die Unterstützung neuer Hardware verbessern kann und dem angehenden Freifunker erleichtert das richtige Gerät für sich und seinen Anwendungsfall zu finden. Im Anschluss betrachten wir die aktuellen Herausforderungen die viele Communities gerade mit stark limitierter Hardware trifft und möchten auch einen Blick auf kommende Herausforderungen werfen. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10272.html

<pre class="moz-quote-pre">Infrastructure Review des Camp 2019 Stromnetz aus Sicht des auf der GPN in der Theorie vorgestellten Low Cost Power Monitoring. Aufbau des Monitoring-Netzes, Inbetriebnahme und Ergebnisse von Tag -1 bis Tag 4. Wie verhält sich das Netz von c3Power auf dem Camp 2019 zu den verschiedene Tageszeiten, wie sieht die Auswertung von z.B. Lastverteilung, Netzoberwellen, Fehlerrate aus. Visualisierung der Daten in Grafana, Server Infrastruktur. Do:s and don't:s vom Aufbau der Hardware, Betrieb bei 50 Grad plus und 10 cm Wasserstand im Freien. Stabilität des Campnetzes in den ersten 4 Tagen. Integration ins DMR Funknetz über MMDVM Hotspots zum Absenden der Fehlermeldungen als DMR SMS. Abhandeln der Störmeldungen. Impressionen vom c3power Team während des Events.</pre> about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10397.html

Climate change and the discussion about reducing CO2 emissions to ensure matching the Paris agreement currently is the most important topic in our political and economic discussions. We all agree reducing emissions is a necessity, but how can we possibly achieve this in a world that consumes more energy than ever before? And which price are we willing to pay for it? Climate change and the discussion about reducing CO2 emissions to ensure matching the Paris agreement currently is the most important topic in our political and economic discussions. We all agree reducing emissions is a necessity, but how can we possibly achieve this in a world that consumes more energy than ever before? And which price are we willing to pay for it? [The Paris agreement](https://ec.europa.eu/clima/policies/international/negotiations/paris_en) sets out a global action plan to put the world on track to avoid dangerous climate change by limiting global warming to well below 2°C and pursuing efforts to limit it to 1.5°C. This can only be achieved by reducing emissions - this primarily means CO2 emission. So far, so good. But let's face the truth: We NEED energy. Our whole world is addicted to it, and cutting the power lines is no option for today's society, economy, and our daily lives. We need energy, therefor we need power plants. Power plants need energy sources for transforming them into electrical energy. These plants can be fuelled by various sources: Coal, wind, solar, nuclear, natural gas, biomass, and oil, just to name the major ones. Let's assume for a moment we could build a completely new power infrastructure for a country from scratch under the following prerequisites: * Minimal CO2 emissions * As little impact as possible (environment, health, economics etc.) * Affordable price * Available sources * Lowest possible fuckup factor This task can be approached by translating it into an optimization problem: Finding the ideal energy mix taking into account the conditions listed above. This talk presents an analysis of this optimization problem by comparison of the relevant factors (emissions, affordability, impact, sources) of different energy sources (coal, natural gas, wind, solar, biomass, nuclear and oil). Our aim is to categorize different energy sources under a strict scientific regime without emotional debates, putting price tags on each of them not only made of money but also factors like emissions, fuckup factors, health concerns, and the cost of human lives per TWh. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10193.html

Here we are, a new generation. Actually not only that, we are moving forward in evolution. The Antropocene is screaming for action, but - „Yeah right, I know... we‘re working on it!“ she told me. Does Sophia really know? Do I care? 42? In some people‘s minds, utopian thoughts are blizzering around in thunderstorms of beautiful insanity, yet unfortunately some others‘ minds seem to be hopeless cases if it comes to the essential understanding of problems. Sure, everyone knows what we‘re talking about. In theory, there is a strong need to change things, not only concerning politics, philosophy, art or physics: almost every academic discipline seems to grow some kind of interdisciplinary necessity into an important status. Sadly, the worlds` leaders suck horribly at reaching any fair and positive social state for all the inhabitants of this beautiful planet. But, since education can be based on solidarity, and swarm intelligence apparently grows into neural networks, there is no better time to sit down and talk about all those moral problems than now. Any change needs to be made by an individual, as far as we know. Let‘s get together, exchange knowledge, fight in peace and use the language of conceptual art as a weapon! about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10381.html

In this talk, I will give an overview of the past, present, and possible future of physical security enclosures, i.e., the physical boundary that protects Hardware Security Modules (HSMs) and separates the untrusted outside from the secret data inside the module. I will present an analysis of the hardware security features in some selected HSMs, ranging from sensitive carbon meshes, over light detectors, up to temperature sensors. Since the security of these solutions has recently been questioned and some of them have been discontinued, new technologies have been proposed by several research groups, which will be presented in the second half of my talk. I will give insight into the current research regarding future solutions whose security is based on Physical Unclonable Functions (PUFs). Via this technology, cryptographic keys are extracted from intrinsic manufacturing variation of the enclosure itself. Thus, a violation of the delicate enclosure results in immediate loss of information and thereby voids cryptographic keys - in theory. Finally, I will discuss existing drawbacks and issues which have to be resolved, which currently prevent PUFs from protecting HSMs. Hardware Security modules (HSMs) in servers, such as for VPN or banking applications, are commonly protected via physical security enclosures. This boundary, which consists of a conductive mesh that entirely surrounds the module under protection, is continuously monitored to detect any physical intrusion and subsequently wipe critical data. Since attack tools have improved and some enclosure solutions have been discontinued, a desire for a new technology has emerged. At first, I present state-of-the-art solutions for HSMs which conform up to the highest security level: FIPS 140-2 level 4. Knowledge about these solutions was gained by accurate disassembly of such modules, obtained via a famous online market place. While some solutions have a very delicate mesh surrounding the entire device, others have additional light and temperature sensors that are countermeasures against common physical attacks. However, many physical security enclosures have been discontinued, sometimes due to suspected insecurity, thus, there is demand for a successor. The second part of my presentation focuses on a novel technology for enclosures, based on Physical Unclonable Functions (PUFs). These PUFs, which are currently investigated by several research groups, are uncontrollable minuscule manufacturing variations which are present, for example, in a conductive mesh of a security enclosure. One solution, that I am doing research at, is able to extract femto-farad (10^-15) capacitance variations from electric traces contained in the enclosure. Cryptographic keys are derived from the PUF which is subsequently used to encrypt the underlying system data. If an attacker damages the enclosure in an attempt to gain access, these delicate variations are altered, the key changes, and critical data cannot be recovered anymore. Despite PUFs provide real tamper-sensitive key storage, they are accompanied by some drawbacks, e.g., sensitivity to environmental conditions, aging, etc. which have to be tackled via additional means. Finally, I will discuss the current status of the development of PUF enclosures and outline the issues that have to be resolved to enable PUF-based security enclosures to secure future HSMs. (I will try to bring some real-world samples, so that there is the option to have a close look after the talk. However, I have to check this with my institute first.) About the presenter: I am currently doing my PhD at a research institute that focuses on embedded security. I am in the final phase of my dissertation about physical security enclosures, based on PUFs. This offers me a deep insight into the current development status of Physical Security Enclosures. In this talk, I want to share my experience with various solutions, from an analysis of a few up to the development of others. My goal is to discuss novel PUF-based solutions openly to raise awareness and to encourage more research into this interesting direction - from attacks up to countermeasures. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10326.html

Ein Geheimdienst im 21. Jahrhundert, der was auf sich hält, muss Big Data machen: Möglichst alles über alle Bürger sammeln, horten, sortieren, filtern, rastern und ja niemandem was von den Ergebnissen mitteilen. Da haben wir uns gedacht: Das können wir auch! Daher machen wir für unseren eigenen Kurznachrichtendienst eben in Little Big Data. Praktischerweise stellt die Deutsche Telekom im Halbjahrestakt eine digitale Offlinedatenbank bereit, die schonmal Adressen, Telefonnummern und Geokoordinaten der meisten Einwohner enthält - und das seit 1992. Einzige Nachlässigkeit: Die Informationen sind in binärer Form auf den Datenträgern abgelegt und die Gewissenhaftigkeit der Informanten im Post- und Telekomdienst lässt ausweislich offensichtlicher Fehler in den Datensätzen zu wünschen übrig. Begleitet uns in einem besinnlichen Diavortrag bei Geschichten einer abenteuerlichen Jagd nach den Datensätzen, von nervenaufreibendem Starren auf Binärmuster, um den Geheimnissen der Encraption auf den Grund zu gehen und dem überwältigenden Gefühl, mal an Datenmengen zu schnuppern, die noch vor ein paar Jahren problemlos als “Big Data” durchgegangen wären. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10257.html

Current search engines such as censys or shodan give everyone an insight into the global Internet. Unfortunately, they don't provide a comprehensive view of the Internet because you can't access the raw data. Consequently, you have to scan the Internet yourself. Anyone can perform a one-shot scan via Mass-Scan & Co. However, how to build an infrastructure for regular Internet scans that is not blocked after a short time by Intrussion Detection Systems and Spam/Blacklists is not easy. First we will talk about the right scan setup, infrastructure, scan strategies, and data enrichment. We will then take a look at the data and gain common and interesting insights into the structure of the Internet. Current search engines such as censys or shodan give everyone an insight into the global Internet. Unfortunately, they don't provide a comprehensive view of the Internet because you can't access the raw data. Consequently, you have to scan the Internet yourself. Anyone can perform a one-shot scan via Mass-Scan & Co. However, how to build an infrastructure for regular Internet scans that is not blocked after a short time by Intrussion Detection System and Spam/Blacklists is not easy. The following questions must be answered: Which scanning algorithms are used (centralized, distributed, BGP prefix hit lists)? How could you reduce scan traffic? How do I process the data in the long term (up to 600GB / scan)? With which further data do I enrich the scans for further analyses (BGP prefixes, Inetnum objects) ? How do I build the right server without a bottleneck and how do I connect it to the internet (rent a server or become a RIPE-Member/ your own ISP with a /22 IPv4 /32 IPv6 Block)? In the first half of the talk we will deal with these questions. In the second half of the lecture we will discuss real scan data. We will concentrate on the analysis of the network topology and distribution of BGP prefixes, whois blocks and network services of well-known autonomous systems on the Internet. As a further example, we will look at the network structure of a large well-known German hoster, which gives us a good overview of its internal organization of data centers and other services. Finally, we will look at some data and analysis from a security perspective. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10353.html

To tinker with receivers for space-signals, its good to know the different space communication standards. And to understand space standards, it doesn't hurt to get an overview of how to transmit data in the first place. Since the first "beep" from Sputnik, there have been many different artificial signals from satellites, capsules and space stations being send back to earth. These multitude of RF (and laser...) signals not only show how different mission requirements dictate the system design for different spacecrafts, but also chronicle advances in communication technology since the advent of the space age. So get to know how to understand the languages spoken by Voyager, GPS and satellite TV, and learn basics of RF communication in the process! about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10351.html

In this talk we will present how intermediate code transformations can be used to obfuscate code and the advantadges and limitations they introduce. We will also brielfy discuss some techniques that could help detect and reverse code obfuscated in such ways. <p>Despite their limitations, intermediate languages like LLVM-IR provide the best way to write code transformations that work well for all the input and output languages supported by the compiler framework.</p> <p>Usually, this is used to write optimization passes, but nothing prevents you from using them to make the resulting code less inteligible to an external reader.</p> <p>This talk will focus on how different obfuscation techniques can be implemented and used as such passes and what are the limitations that may make implementing, for example, an unpacker a bit harder. <p>We will also cover how some of these techniques can be reversed (specially when perfoming comparative analysis).</p> <p>Keep in mind that although LO started as a way to provide a way to deterministically increase variability in generated code and make finding out the patched flaws harder, many of it's techniques like code flattening or constant expansions are also used by other users of obfuscated code, for example malware.</p> about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10299.html

Alle reden vom Klimawandel, doch niemand erklärt was da gerade passiert. Wird es in Zukunft einfach nur schön warm oder wird die Veränderung der Umwelt die Menschheit in die Knie zwingen? Warum der Temperaturanstieg der Atmosphäre einzigartig ist und welche Folgen dies für Land, Meer und Gletscher hat, erklärt die angehende Polarforscherin Maria-Elena Vorrath. Die Diskussion über den menschengemachten Klimawandel ist in den Medien stark verzerrt und es ist schwer sich als Laie in der Informationsflut zu orientieren. Der Vortrag "Global Warming Sucks!" soll eine breiten Zuhörerschaft über die aktuelle Situation des sich wandelnden Erdklimas sachlich aufklären. Es wird erklärt, wie der Ausstoß von Treibhausgasen die Atmosphäre seit der Industrialisierung beeinflusst und auf die bisherigen beobachteten Veränderungen in allen Teilen der Erde eingegangen. Anschließend werden einige globale Kipppunkte, die sensiblen Bausteine des Klimasystems, vorgestellt, und ihre Reichweite, Verwundbarkeit und Bedeutung für die Menschheit verdeutlicht. Angesichts der wissenschaftlichen Erkenntnisse können die Zuschauer nun öffentliche Auseinandersetzungen besser einordnen und kommentieren und ihren Beitrag zur Lösung der Klimakrise bestimmen. Fragen sind ausdrücklich erwünscht. about this event: http://talx.thm.cloud/thms/talk/P9JCSV/

In this talk, we'll investigate how privacy has become an indicator of privilege in our world. Does everyone have equal access to privacy? How does unequal privacy affect the lives of people? Should we treat privacy like other privileges (i.e. wealth, race, gender)? If we have access to privacy, is this something we can share? By the end of the talk, we'll have explored how the concept of privacy has changed, what we can do about these changes and some practical steps for making privacy more accessible for those who most need it. This is not your average privacy talk. This is, instead, a study of how the word and concept of privacy has changed over time. These changes, which are in part our own creation, have enabled privacy to be both unequally applied and co-opted by a variety of companies and movements. In this lecture, we’ll discuss the following questions: - What is privacy in our current society? - How has our understanding of privacy changed over time? - Does everyone have equal access to privacy? Why or why not? - Who is most impacted by the rise of technological surveillance? - How can we use our privilege to help protect others’ privacy? Who should attend: - People interested in privacy regardless of "professional" knowledge or level of experience - Folks doing anti-oppression work - People who already disagree with me after reading this abstract :-D While the format is a lecture, I hope we can find an open space afterwards to continue debating and discussing these questions and the theme as a whole. My goal is to help educate and inspire work around privacy that benefits not just those who attend the Camp, but instead reaches beyond our privacy-aware social circles, to help those who do not have access to privacy. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10192.html

Technischer Überblick zum Build-Prozess der Datenschleuder. Vom LaTeX-Backend (schleuderpackung) über Continous Integration (Zentrifuge) zum PDF, Epub und HTML-Auszügen. Seit der Reanimation der Datenschleuder sind bisher drei Ausgaben erschienen. In dieser Zeit hat sich der technische Prozess deutlich professionalisiert. Der Vortrag gibt einen kurzen Überblick über die Redaktionsarbeit und fokussiert sich anschließend auf die TeXnische Umsetzung inklusive des Buildsystems und der unterschiedlichen Ausgabemodi (PDF/ePUB/HTML). Die Anwendung auf allgemeinere Zeitschriftenprojekte wird am Beispiel des Forks einer Schülerzeitung gezeigt und mit dem geplanten Release zum Camp bietet sich damit die Möglichkeit der Nutzung für eigene Zeitschriftenprojekte. Darüber hinaus liefert der Vortrag durch die Struktur der Schleuderpackung einen Einblick in aktuelle Entwicklungen aus dem LaTeX-Umfeld, wie expl3 Programmierung, die Lua Kopplung und die weitere Planung in Richtung Barrierefreiheit. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10223.html

Presentation of the Cyborg Foundation, its philosophy, members and developed projects. Based in Barcelona and founded in 2017, CFL is an association that gives voice to non-human identities. The world around us is full of things that our body is not able to perceive. However, what would happen if we could create new senses that would allow us to decide how we want to perceive our surroundings? Supported by a multidisciplinary team, we conform a group of engineers, philosophers, designers and artists dedicated to exploring the relationship between species, machines and organs. With an eye on nature and analyzing the different senses found on living beings, our purpose is the creation of new sense organs to expand human capabilities. Our team is focused on translating the suggested idea to a hardware/software device, that will not only process data but also transmit it to the body through the brain. In the course of becoming cyborg, different phases are found: the creation of the organ, the implantation of it and the acclimatization of the brain and body to the new sense. The brain is a plastic organ that can be moulded. Just like Neil Harbisson says “The brain is like a sculpture to be shaped”. By now, considerable results have been obtained. We will take a closer look at it by introducing the several members whose organs have been already implanted, how this has affected their life and way of interact with the physical world. We will, as well, explain the different senses and its design. Just for a quick view we will talk about: Neil Harbisson - Eyeborg. Color sense antenna. Moon Ribas - Seismic sense Manel Muñoz - Weather station Kai Landre - Cosmic rays In addition, we have the satisfaction of announcing that the CCC will be the first to know about the pioneering technology that we are developing to power the devices. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10312.html

This talk will focus on learning and re-learning RF topics, from the perspective of a semi-experienced engineer. We will review rules of thumb, practical experience and the theory of RF and how it all fits together for your next PCB design. This will also be contrasted with best-practices for designing lower frequency circuits and how it all fits together. Starting my engineering career working on low level analog measurement, anything above 1kHz kind of felt like "high frequency". This is very obviously not the case. This talk will go over the journey of discovering and rediscovering higher frequency techniques and squaring them with the low level measurement basics that I learned at the beginning my career. The talk will include a discussion of Maxwell's equations and some of the assumptions that we make when we're working on different types of circuits. Attendees of this talk will find this information useful in the context of RF calculations around cellular, wifi, bluetooth and other commonly available communication methods. CCCamp attendees will walk away knowing a little bit more about how to interact with the elements that power their everyday projects. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10184.html

Bisweilen kann man sich des Eindrucks nicht erwehren, jede zweite Woche würde eine neue, wachsweiche Selbstverpflichtung für den ethischen Einsatz von Algorithmen bekanntgegeben. Privatwirtschaftliche wie öffentliche Organisationen übertrumpfen sich geradezu dabei zu betonen, dass der Mensch bei allen maschinellen Entscheidungen im Mittelpunkt stehen soll und dass diese transparent sein müssen. Aber was bringt einem das Wissen um benachteiligende oder falsche Funktionsweise der Algorithmen, wenn man sie dennoch nicht verbieten kann? Und: sollten wir die Regeln für den zukünftigen Einsatz von Maschinen wirklich von den Konzernen gestalten lassen, die diese Technologien entwickeln? Wir zeigen, wie wenig konkret die verschiedenen Selbstverpflichtungen der Unternehmen, Verbände und Organisationen sind und wie all das Reden über Ethik in den meisten Fällen einem Ziel dient: gesetzliche Regulierung verhindern. Bisweilen kann man sich des Eindrucks nicht erwehren, jede zweite Woche würde eine neue, wachsweiche Selbstverpflichtung oder Empfehlung für den ethischen Einsatz von Algorithmen bekanntgegeben. Privatwirtschaftliche wie öffentliche Organisationen übertrumpfen sich geradezu dabei, ein weiteres Mal zu betonen, dass der Mensch bei allen maschinellen Entscheidungen im Mittelpunkt stehen soll, dass sie fair und nachvollziehbar sein müssen und es stets die Möglichkeit zum Widerspruch gegen eine solche Entscheidung geben muss. Transparenz, Transparenz und nochmals Transparenz sei das Maß aller Dinge. Aber was heißt das konkret für diejenigen, die nur noch per Gesichtserkennung in ihr Büro oder Wohnung reinkommen, deren Kredit, Wohnungs- oder Arbeitsgesuch abgelehnt wird oder sie vom Jobcenter keine Förderung bekommen dank einem Algorithmus? Was bringt einem das Wissen um benachteiligende oder falsche Funktionsweise der Algorithmen, wenn man sie dennoch nicht verbieten kann? Welchen Sinn hat das Recht darauf, sich a posteriori wehren zu dürfen, wenn man bereits alles verloren hat? Und: sollten wir die Regeln für den zukünftigen Einsatz von Maschinen wirklich von den Konzernen gestalten lassen, die diese Technologien entwickeln? Ethikforscher, die sich für Selbstregulierung einsetzen, verschweigen oft, dass ihre Einrichtungen von Techfirmen finanziert werden. Selbst die neuen Ethischen Richtlinien der EU sind von Google, IBM, Facebook und Zalando mitgeschrieben worden. Wir zeigen, wie wenig konkret die verschiedenen Selbstverpflichtungen der Unternehmen, Verbände und Organisationen sind und wie all das Reden über Ethik in den meisten Fällen einem Ziel dient: gesetzliche Regulierung verhindern. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10231.html

This talk will present a secure IoT architecture by design, incorporating secure boot (such as HAB of iMx6), secure update processes, system partitioning and redundancy, system recovery, flash wear-out, and secure remote access, This talk will present a secure IoT architecture by design, incorporating secure boot (such as HAB of iMx6), secure update processes, system partitioning and redundancy, system recovery, flash wear-out, and secure remote access, about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10268.html

This talk will give an introduction into the general concepts of power-to-x and then go more into detail on carbon capture and utilization (CCU). CCU is the idea of building up a closed carbon cycle, where CO2 is recycled, towards fuels and base chemicals, under the use of renewable energy. The talk will give insight in the technology, chemistry, possibilities and challenges. While redesigning our electric supply network towards renewable energies, we face the problem of the fluctuating behavior of the renewables. To solve this, higher nameplate capacities need to be installed, as compared to traditional power plants. This frequently leads to high overcapacities, which we should use, as they would be wasted otherwise. Some of this energy needs to be stored for periods where the energy generation is lower than our consumption. The rest can be used to produce all kinds of things that we need. This would allow a sector coupling of electricity with other fields like transport, heat or chemical industry and lead to more sustainable processes in all those fields. If we see this on a global scale, we can also think of a redistribution of energy not only in time and sector of application, but as well in space. This can be realized, by producing fuels and other energy intensive products in areas of the world with a high potential in the generation of renewable electricity, and transport them to places where they are needed. The technologies that would make this possible are often subsumed as power-to-x technologies. The Wikipedia names twelve different x’s: power-to-ammonia, power-to-chemicals, power-to-fuel, power-to-gas, power-to-heat, power-to-hydrogen, power-to-liquid, power-to-methane, power-to-mobility, power-to-food, power-to-power, and power-to-syngas. In addition, one could still think of many more. I want to give a brief introductive overview on these different approaches and then focus on the technologies, which are using carbon dioxide as a feedstock. Here the idea of power-to-x is combined with the aim of a closed carbon cycle. Emitted CO2 would be recycled to products, like fuels, plastics or fine chemicals. While today these are mainly produced form crude oil, in future they could be implemented in a sustainable process cycle. For these carbon capture and utilization (CCU) concepts, like for example electrolysis of water coupled with a second catalytic CO2 reduction step or direct electrocatalytic CO2-reduction, I will present the technical working principles, the chemistry behind it and discuss possibilities and challenges. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10295.html

Koffein als Substanz wird Tag für Tag aufgrund seiner anregenden Wirkung von vielen Menschen konsumiert, doch was genau steckt eigentlich hinter dieser Substanz? In diesem Talk blicken wir in die Chemie, Herkunft, Wirkung, Gefahren und weitere Aspekte des Koffeins. Koffein, ein Stoff, den viele (hackende) Menschen tagtäglich in unterschiedlichen Formen konsumieren. Was genau ist diese Substanz eigentlich und wo kommt sie überall vor? Was passiert mit Koffein und mit uns, wenn dieses Molekül durch unseren Körper reist? Und kann Koffein ab einer bestimmten Menge gefährlich werden? Diese und weitere Fragen werden zusammen mit vielem, was Wissenswertes zur Chemie von Koffein existiert, hier thematisiert. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10232.html

Heat waves, wildfires and new movements like Fridays for Future and Extinction Rebellion have brought the climate crisis back into the news. However, meaningful political action is still not happening and the world is on track to three to four degrees of warming. Where are we heading and why did humanity fail so badly at tackling the problem? A look at the scientific reality of the climate crisis is dire. Sinking coastal cities with millions of inhabitants, dying coral reefs, and large uninhabitable areas are practically impossible to avoid by now. But that doesn’t even come close to capture the worst outlooks: A runaway climate change where feedback loops accelerate heating [1], without any option for humanity to do anything about it. The end result may very well be a planet largely uninhabitable for humans. Avoiding just the worst of these consequences requires unprecedented political action on a scale that’s not even part of the political discourse yet. The talk will give an overview of the troubling scientific facts. Furthermore I’ll provide some discussion why humanity failed so badly at doing anything about it. This includes undeserved optimism by traditional environmental organizations about international climate diplomacy and the Kyoto and Paris accords, a wrong understanding about relative versus absolute emission reductions and false hopes in technology fixes. With all that dire outlook, it’s important to realize that the difference between “business as usual” and ambitious changes is still huge. A new wave of climate doomsdayers that say it’s too late to do anything may be just as harmful as the climate deniers, because they share the wrong message of doing nothing. [1] https://www.pik-potsdam.de/news/press-releases/planet-at-risk-of-heading-towards-irreversible-201chothouse-earth201d-state?set_language=en about this event: http://talx.thm.cloud/thms/talk/FLXJRA/

<p>Chaosradio 254 live von der THM-Stage auf dem Chaos Communication Congress 2019. Die erste Folge nach der Pause! Anlässlich des Camps heißt Marcus Richter interessante Gäste aus dem Chaosumfeld willkommen, die ihre Projekte präsentieren. Gestreamt wird natürlich live und in Farbe!</p> about this event: http://talx.thm.cloud/thms/talk/FMQ3UN/

Klimakrise, Artensterben, die Grundlagen des Leben – unsere Herausforderungen sind dringend, global und komplex. Seit dem Anthropozän wissen wir, dass der Planet in unserer Hand liegt. Jetzt müssen wir unsere Köpfe zusammenstecken und gemeinsam Lösungen entwickeln. Anknüpfend an historischen Konzepte von einer das Weltwissen allgemein zugänglich machenden World Encyclopedia und des künstlich intelligenten Word Brain kann eine interdisziplinäre Betrachtung durch unterschiedliche Herangehensweisen spannende neue Sichtweisen eröffnen. Die Wahrnehmung von Betriebssystemen als Schnittstelle zwischen Mensch und Maschine, die Auswirkung von Softwarelizenzen auf die Gestaltung der Verhältnisse zwischen Maschinen, Menschen, Firmen und Staaten und die mit einer weltweiten Vernetzung entstehenden Chancen und Risiken können aus Hackersicht von einem sehr technischen Startpunkt analysiert werden. Das Anthropzän verlangt den Übergang in die Noosphäre. Und das heißt, wir müssen das Urheberrecht als juristisches Betriebssystem unserer Wissensordnung in Ordnung bringen, das Netz als seine technische Infrastruktur redezentralisieren und semantifizieren, unser wissenschaftliches, journalistisches und künstlerisches Sensorium stärken und Werkzeuge entwickeln, die es uns erlauben, gemeinsam zu denken und zu enstscheiden. Mehr als künstliche brauchen wir menschliche kollektive Intelligenz, um die Betriebssysteme unserer Gesellschaft mit kollektiver Weisheit auszustatten. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10202.html

Sonnenenergie deckt heute erst etwas über 2% des weltweiten Energiebedarfs durch Umwandlung von Sonnenlicht in elektrische Energie. Eine der Möglichkeiten, um diese zu speichern, ist die Elektrolyse von Wasser, um Wasserstoff zu erhalten. Was aber wäre, wenn man Wasserstoff direkt gewinnen könnte? Eine schnelle Übersicht über Sonnenlicht, das Prinzip hinter Photovoltaischen Solarzeiien, und wie photoelektrochemische Zellen, die flüssiges Wasser in seine Bestandteile Wasserstoff und Sauerstoff spalten können, beide Prozesse miteinander kombinieren können. Die von uns Menschen verantworteten CO2-Emissionen müssen reduziert werden, aber wie? Die Erzeugung von elektrischer Energie aus Sonnenlicht wird mit großer Sicherheit einen signifikanten Beitrag zur Deckung des weltweiten Energiebedarfs liefern. Zuerst sehen wir uns das Spektrum der Sonne an, und wie viel dieser Energie wo auf der Erde ankommt. Wenn dieses Licht auf Atome trifft, wie die Siliziumatome in einer Solarzelle, kann es diese in einen energiereicheren Zustand anregen, aber nur ein Teil des Sonnenlichts hat genug Energie, um diese Anregung zu erreichen. Was für Konsequenzen hat das für die Effizienz von Photovoltaik-Zellen? Jeder kennt die blau-schillernde Silizium Photovoltaikzelle, die Größen von wenigen Quadratzentimeter in einem Taschenrechner über Installationen auf Hausdächern mit einigen Kilowatt bis zu Solarparks, die mehrere Megawatt Spitzenleistung abgeben können. Solarenergie ist vom Tag-Nacht-Zyklus der Erde und von der Jahreszeit abhängig. Um die Energieversorgung auch z.B. im Winter bei geringerer Sonnenintensität decken zu können, muss diese längerfristig gespeichert werden. Verschiedene Strategien sind denkbar, eine davon die Umwandlung in chemische Energie in Form von Wasserstoff durch Elektrolyse von Wasser. Beide Technologien bringen Umwandlungsverluste mit sich und erfordern teilweise teure Metalle und viel Energie bei der Herstellung. Aber es gibt eine Klasse an Halbleiter-Materialien, die, wenn man sie in Wasser eintaucht und mit Sonnenlicht bestrahlt, die Lichtenergie direkt auf das Wasser übertragen, und es in Wasserstoff und Sauerstoff spalten können. Man umgeht die Kopplung von Photovoltaik und Elektrolyse. Viele dieser halbleitenden Materialien sind mit weit weniger Energieaufwand herzustellen als Silizium. Besondere Aufmerksamkeit ist auf häufig vorkommende und damit gut verfügbare Metalle gerichtet. Eisenoxid - Rost, oder Titandioxid - das Pigent aus weißer Wandfarbe, sind zwei Beispiele, die jeder kennt, ihre Superpower aber sehr warscheinlich nicht. Noch sind die Wirkungsgrade gering und marktreife Lösungen noch nicht absehbar. Wenn der Ansatz allerdings erfolgreich ist, könnte dies ein Durchbruch für unsere Energieerzeugung sein, und nebenbei einen Teil des Problems lösen, Energie zu speichern und zu transportieren. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10377.html

Der Freak Show Podcast live on stage Ausgabe FS239 von der Freak Show. https://freakshow.fm about this event: http://talx.thm.cloud/thms/talk/ULS83P/

In many French cities (and beyond), mayors are pushing towards "safe Smart Cities", pushing for technology everywhere. Microphones, video-surveillance, automated drones, facial recognition, machine learning is the recipe of their fantasised secure city. This talk will introduce Technopolice, the new campaign from La Quadrature du Net, its goals, its tools, and the way we will make it happen. All over the French territory, the “Smart City” is slowly revealing its true colours: a complete and constant surveillance of the urban area for police purposes, based on partnerships between industrial companies such as Thalès or Engie and the cities themselves.</br> Multiple cities are experimenting "smart" videosurveillance based on automated treatment of videos, in order to make face recognition or detecting behaviours deemed to be abnormal. Another city is teaming up with a start-up to deploy microphones and drones in the city. The idea is to detect so-called abnormal sounds to alert the police, which can then use video-surveillance to check if a patrol is needed or not. The city of Nice wants to have its own custom citizen reporting application. Marseille wants to use AI and Big Data to predict behaviours and to help in decision making.</br> This is what they want our future to be: a huge automated surveillance system, with behaviour analysis, emotion recognition, pre-emption of threats, automation of the police, repression of any unwanted behaviour.</br> This comes at a huge cost: instead of the <i> polis </i>, which means Democratic City, a place to stroll around, to meet and gather, we will have a dehumanised, unwanted place, a place to experiment the most advanced forms of social control: there is no such as surveilling just "to look", our behaviours are modified just by knowing we are being surveilled. Not to mention the financial and experimental cost of such an architecture.</br> In this talk, I will detail the "Technopolice" campaign, its importance for every single human being willing to protect their freedom of movement and right to exist without being constantly subjected to surveillance. I'll explain the importance of decentralising such a campaign, and how we will try to federate the data and the organisations around this project.</br> about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10329.html

This talk offers a brief overview about homograph attacks, describes part of the mechanics behind the registration of homograph domains, highlights their risks and presents a chain of two practical exploits against Signal, Telegram and Tor Browser that could lead to nearly impossible to detect phishing scenarios and also situations where more powerful exploits could be used against an opsec-aware target. Since the introduction of Unicode in domain names (known as Internationalized Domain Names, or simply IDN) by ICANN over two decades ago, a series of brand new security implications were also brought into light together with the possibility of registering domain names using different alphabets and Unicode characters. This talk offers a brief overview about homograph attacks, describes part of the mechanics behind the registration of homograph domains, highlights their risks and presents a chain of two practical exploits against Signal, Telegram and Tor Browser that could lead to nearly impossible to detect phishing scenarios and also situations where more powerful exploits could be used against an opsec-aware target. Historical security issues related to Unicode and confusable homographs, as well as other attack vectors not discovered by the author will also be explored in this presentation. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10258.html

Polizeiwache mitten auf dem Festival? Wasserwerfer? Räumpanzer? WTF?? dachte sich da auch das Fusion Festival. Der Kampf gegen die absurden Pläne von Polizeipräsident Nils Hoffmann-Ritterbusch konnte zum Glück gewonnen werden. Und ist ein Lehrstück dafür, dass zivilgesellschaftlicher Druck eben doch Berge versetzen kann. Wir lassen Drohungen, Protest und Absurditäten aus diesem Lehrstücks gemeinsam Revue passieren. Und ja: es darf gelacht werden. about this event: https://fahrplan.events.ccc.de/camp/2019/Fahrplan/events/10438.html