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Chaos Computer Club - archive feed

Chaos Computer Club - archive feed

21,021 episodes — Page 81 of 421

Energy Consumption of Datacenters (37c3)

Dec 27, 202335 min

Vom Kinderkanzler Kurz zum Volkskanzler Kickl - Politik in Österreich (37c3)

Dec 27, 20231h 14m

Sucking dust and cutting grass: reversing robots and bypassing security (37c3)

For the past 5 years we have been presenting ways to hack and root vacuum robots at various events like CCC and DEFCON. In all these cases it covered vacuum robots by Roborock, Dreame, Xiaomi and some smaller companies. However, did we ever take a look at other vendors and maybe some new interesting device classes? In this talk we do exactly that, and will take a deep dive into Ecovacs robots! We will present the result of the research that started back in 2018. Explore with us the development on the last years. How did the security and privacy of "Ecovacs2 change in contrast to other companies? What kind of cool hardware is out there? Can the devices be used to potentially spy on you? Learn how reverse engineering works and how to get root access on the devices. Let us show you how you maintain persistence on the devices and run your own software. Come with us on a journey of having fun hacking interesting devices while exploring bad oversights and real problems. You will be surprised what we found. Let's discuss together what impact this devices will have on our (social) life and what the future of vacuum robot hacking will bring. about this event: https://events.ccc.de/congress/2023/hub/event/sucking_dust_and_cutting_grass_reversing_robots_and_bypassing_security/

Dec 27, 20231h 11m

Vom Kinderkanzler Kurz zum Volkskanzler Kickl - Politik in Österreich (37c3)

Österreichische Politik kann mit Humor sehr gut ertragen werden. Ob Videos von spanischen Inseln, Chats oder Spesenaffären - all das hätte sich ein Drehbuchautor nicht besser ausdenken können. Wir erklären, was in den letzten Jahren bei uns passiert ist und zeigen auf, wie ein weiterer Rechtsruck verhindert werden kann. about this event: https://events.ccc.de/congress/2023/hub/event/vom-kinderkanzler-kurz-zum-volkskanzler-kickl-politik-in-sterreich/

Dec 27, 20231h 14m

Energy Consumption of Datacenters (37c3)

I look into the resource consumption of data centers and present my state of knowledge. I ask more questions than I give answers. The increase has already been exponential for years. With the AI hype, this demand for energy, cooling and water has increased dramatically. What is known, what is to be expected and how an upcoming crisis be avoided? Can we reuse the energy? At least partially? Are there other concepts of integrating data centers into buildings and cities? Do we have non technical patterns driving the resource exhaustion? The AI hype has increased the demand dramatically. The existing GPU based computing paradigm cuts hard into the standard design of data centers and demands other ways of cooling. Does the approach of modeling neurons really need floating point numbers? Which alternatives could be found? This is an update of Thomas' previous talks at the #cccamp23 Camp[1] and at the Bits und Bäume conference [2]. [1] https://media.ccc.de/v/camp2023-57070-energy\_consumption\_of\_data\_centers [2] https://media.ccc.de/v/bitsundbaeume-19844-datenschutz-sparsamkeit-und-resourcenverbrauch-am-beispiel-einer-terminbuchungsanwendung about this event: https://events.ccc.de/congress/2023/hub/event/energy_consumption_of_datacenters/

Dec 27, 202335 min

Breaking "DRM" in Polish trains (37c3)

Dec 27, 20231h 1m

Breaking "DRM" in Polish trains (37c3)

We've all been there: the trains you're servicing for a customer suddenly brick themselves and the manufacturer claims that's because you've interfered with a security system. This talk will tell the story of a series of Polish EMUs (Electric Multiple Unit) that all refused to move a few days after arriving at an “unauthorized” service company. We'll go over how a train control system actually works, how we reverse-engineered one and what sort of magical “security” systems we actually found inside of it. Reality sometimes is stranger than the wildest CTF task. Reality sometimes is running `unlock.py` on a dozen trains. The talk will be a mix of technical and non-technical aspects of analysis which should be understandable for anyone with a technical background. We’ll briefly explain how modern EMUs look like inside, how the Train Control & Monitoring System works, and how to analyze TriCore machine code. about this event: https://events.ccc.de/congress/2023/hub/event/breaking_drm_in_polish_trains/

Dec 27, 20231h 1m

The Extremely Large Telescope (ELT) (37c3)

Dec 27, 202340 min

Ist die Demokratie noch zu retten? (37c3)

Dec 27, 202342 min

SMTP Smuggling – Spoofing E-Mails Worldwide (37c3)

Introducing a novel technique for e-mail spoofing. SMTP, the Simple Mail Transfer Protocol, allows e-mailing since 1982. This easily makes it one of the oldest technologies amongst the Internet. However, even though it seems to have stood the test of time, there was still a trivial but novel exploitation technique just waiting to be discovered – SMTP smuggling! In this talk, we’ll explore how SMTP smuggling breaks the interpretation of the SMTP protocol in vulnerable server constellations worldwide, allowing some more than unwanted behavior. Sending e-mails as [email protected] to fortune 500 companies – while still passing SPF checks – will be the least of our problems! From identifying this novel technique to exploiting it in one of the most used e-mail services on the Internet, we’ll dive into all the little details this attack has to offer. Therefore, in this talk, we’ll embark on an expedition beyond the known limits of SMTP, and venture into the uncharted territories of SMTP smuggling! about this event: https://events.ccc.de/congress/2023/hub/event/smtp_smuggling_spoofing_e-mails_worldwide/

Dec 27, 202331 min

Ist die Demokratie noch zu retten? (37c3)

Demokratie ist eine gute Idee, funktioniert aber nicht in der Praxis. So die Meinung vieler Menschen, die vor dem Hintergrund von Klimakrise, Infrastrukturerosion und Regierungsversagen an der Zukunftsfähigkeit der Demokratie zweifeln. Wie reagiert die Politikwissenschaft darauf und kann die Demokratietheorie Lösungswege aufzeigen? Der Vortrag ist eine allgemeinverständliche Einführung in die Demokratietheorie in Krisenzeiten. Er stellt zuerst die wichtigsten Demokratietheorien aus der Politikwissenschaft vor: Was ist Demokratie? Und wie sieht eine gut funktionierende Demokratie in der Praxis aus? Anschließend werden die Problemdiagnostik und die Ursachenforschung behandelt: Was stimmt aus wissenschaftlicher Sicht nicht mit der Demokratie? Ist sie in der Krise oder liegen die Probleme woanders? Zum Schluss stehen Lösungswege und Reaktionsmöglichkeiten zur Diskussion: Bieten Politikwissenschaft und Demokratietheorie praktikable Lösungsansätze? Oder sind sie selbst in einer Krise, weil sie keine Lösungswege aufzeigen können? about this event: https://events.ccc.de/congress/2023/hub/event/ist_die_demokratie_noch_zu_retten/

Dec 27, 202342 min

The Extremely Large Telescope (ELT) (37c3)

The Extremely Large Telescope (ELT) is currently under construction in the Atacama desert in northern Chile by the European Southern Observatory (ESO). With a primary mirror aperture of 39m, it will be the largest optical telescope on earth. We will briefly introduce the history and mission of ESO and explain how a modern optical telescope works. The European Southern Observatory (ESO) is an intergovernmental organisation founded in 1962 and is based in Garching bei München. It develops, builds and operates ground-based telescopes to enable astronomical research in the southern hemisphere and to foster cooperation in the international astronomical community. In 2012 the ESO Council approved the Extremely Large Telescope (ELT) programme and its construction is scheduled for completion in 2028. The 39m primary mirror will make the ELT the largest optical telescope at that time. It will be located on the top of Cerro Armazones, a ~3000m high mountain in the Atacama desert in Chile. This site provides ideal optical conditions, but also comes with logistical and engineering challenges. We will walk you through the telescope and along the optical path to the instruments and explain some of the technologies involved to push the boundaries of ground-based optical astronomy. about this event: https://events.ccc.de/congress/2023/hub/event/the_extremely_large_telescope_elt/

Dec 27, 202340 min

Offene Hör Muscheln (37c3)

Erdgeist & Monoxyd denken laut. Aufgrund des großen Erfolgs soll das jetzt auch beim Congress versucht werden. Themen? Ja! Wahrscheinlich irgendwas mit so... Dingen, die gerade passiert sind und zu denen mal was gesagt werden muss. Besser wir als Lanz & Precht! about this event: https://events.ccc.de/congress/2023/hub/event/offene-hr-muscheln-ohm-019/

Dec 27, 202345 min

Offene Hör Muscheln (37c3)

Dec 27, 202345 min

Wie funktionieren Zug-Fahrkarten ins Ausland? (fireshonks)

Zug fahren ist toll. Mit dem Zug weit weg fahren umso mehr. Leider ist es oftmals kompliziert, eine Fahrkarte ins Ausland zu kaufen - und in den letzten Jahren wird das auch noch immer komplizierter. JeDi hat sich mal angeschaut, wo eigentlich die Probleme liegen - und wie Lösungen aussehen können. Die älteren unter uns werden sich erinnern. Früher konnte man in halbwegs großen Bahnhöfen Fahrkarten nach halb Europa kaufen. Im schlimmsten Fall wurden kompliziertere Sachen mal per Fax beim nächsten großen Bahnhof bestellt, im Wesentlichen konnten die Personen am Schalter aber die Fahrpreise und Fahrpläne durch das Wälzen von Kursbüchern und Tariftabellen ermitteln. Das müsste heute doch besser gehen? So mit Computern, ohne Fax und mit Algorithmen? Im Prinzip schon - aber... Und das ganze dann noch aufs Handy oder zum Selbstausdrucken nach Hause zu bringen, ist dann das nächste Thema. Also doch zum Schalter? Viele wurden in den letzten Jahren geschlossen, und auch dort wurden die Möglichkeiten beschnitten. Eine Reservierung nach Paris? Geht nur über Frankfurt, nicht über Köln. Ab Paris weiter? Nur vor Ort. JeDi kennt sich mit Fahrkarten aus, und versucht das Problem aufzuarbeiten und zu bewerten. about this event: https://events.ccc.de/congress/2023/hub/event/wie-funktionieren-zug-fahrkarten-ins-ausland/

Dec 27, 20231h 27m

Wie funktionieren Zug-Fahrkarten ins Ausland? (fireshonks)

Dec 27, 20231h 27m

Music on Mars? (37c3)

Dec 27, 202337 min

Lass mal das Innere eines Neuronalen Netzes ansehen! (37c3)

Dec 27, 202339 min

Euclid – das neue Weltraumteleskop (37c3)

Dec 27, 202341 min

Euclid – das neue Weltraumteleskop (37c3)

„Euclid" ist ein neues Weltraumteleskop der Europäischen Weltraumbehörde mit Beteiligungen eines Wissenschaftskonsortiums aus vierzehn europäischen Ländern, den USA, Kanada und Japan. Euclid wurde am 1. Juli 2023 gestartet und beginnt bis Ende des Jahres seine auf 6 Jahre geplante wissenschaftliche Himmelsdurchmusterung. Euclid wird mit seinem Spiegel von 1,20 m Durchmesser und seinen zwei Kameras Bilder und Spektren von einem Drittel des gesamten Himmels aufnehmen. Das Ziel: mit der genauen Vermessung von insgesamt zwei Milliarden Galaxien der Natur von „Dunkler Materie" und „Dunkler Energie" im Universum auf den Grund zu gehen – die zwar zusammen 95 % der Gesamtenergie ausmachen, von denen wir aber nicht wissen, was sie sind und woraus sie bestehen. Euclid hat im November erste spektakuläre Bilder veröffentlicht. Ich werde die Mission vorstellen, die wissenschaftlichen Ziele, die Methoden und darauf eingehen, was in den 25 Jahren von Idee über Teleskop zu wissenschaftlicher Erkenntnis so alles zu erledigen war und ist. Die Astronomie weiß aktuell von 95 % der Energie und Masse im Universum nicht, woraus sie bestehen. Neben 5 % „normaler“ Materie (Sterne, Gas, die Erde, CCC-Kongressteilnehmer\*innen, …) gibt es mindestens fünfmal so viel so genannte dunkle Materie und darüberhinaus sind die restlichen 70 % das, was dunkle Energie genannt wird. Bei beidem wissen wir bislang nicht, woraus sie bestehen – wir kennen nur deren Wirkung! Galaxien rotieren anders, als sie es nur mit normaler Materie tun würden. Und das Universum expandiert – seit dem Urknall – aber die Expansionsgeschwindigkeit nimmt zu und nicht ab, wie von anziehender Materie zu erwarten wäre. Irgendwas drückt den Raum an sich auseinander. Euclid ist ein Teleskop, eine Mission und ein Konsortium aus mehreren tausend Menschen, von denen viele seit ca. 2008 an den Ideen zu dieser Mission arbeiten, viele hundert an der Planung und dem Bau zweier hoch empfindlicher Kameras mit insgesamt knapp 700 Millionen Pixel und jetzt ein- bis zweitausend Interessierten, welche die bald erwarteten wissenschaftlichen Bilder auswerten wollen. Ich möchte die Ziele erläutern, wie man aus der Vermessung der Form von Galaxien unsichtbare dunkle Materie im Vordergrund aufspürt („schwacher Gravitationslinseneffekt“) und warum es einen „kosmischen Längenmaßstab“ gibt, mit dem man die Ausdehnung des Universums über zehn Milliarden Jahre in der Vergangenheit vermessen kann. Schließlich möchte ich die ersten fünf Bilder zeigen, die von Euclid aufgenommen und von der ESA im November veröffentlicht wurden – und warum in denen so viel mehr drinsteckt, als man auf einem Computermonitor so sieht. about this event: https://events.ccc.de/congress/2023/hub/event/euclid_das_neue_weltraumteleskop/

Dec 27, 202341 min

Music on Mars? (37c3)

During Mission 286 in November 2023 at the Mars Desert Research Station (MDRS), Analog Astronaut and crew artist Scott Beibin performed several concerts of original live musical compositions during a two week immersive astronaut training. +++ The concerts were played through a custom audio filter based on data gathered by the NASA Mars Perseverance Rover and created to simulate the acoustic properties of Mars - designed by Beibin and master audio engineer, John Knott. +++ The live sets were performed in the MDRS Science Dome as well as during EVAs while navigating the desolate terrain in a simulation space suit - at sunset with the MDRS base and remote Mars-like Utah desert serving as a backdrop. +++ This event was the first time in the 20 year history of the training facility that a music concert has been performed. +++ The presentation at 37C3 will be the first time this talk is being presented publicly. ++ Additionally there will be a full Ptelepathetique concert featuring Music of Mars (Please keep checking the schedule / Fahrplan for the announcement of the performance) Using the SuperCam microphone mounted on the Mars Perseverance Rover, recordings were made of the sounds of the Ingenuity rotorcraft as well as the popping sounds of laser sparking on stone. These audio samples, in addition to recordings of wind from other missions served as as reference sources in order to characterize the acoustic processes Mars for the first time. It was discovered that: - The acoustic impedance of the martian atmosphere results in approximately 20 dB weaker sounds on Mars than on Earth (if produced by the same source.) - The acoustic attenuation range on Mars was discovered to be roughly between 20Hz to 20kHz. - On Mars low-pitched sounds travel at about 240 m/s (537 mph) while higher-pitched sounds move at 250 m/s (559 mph) due to the low atmospheric pressure 0.6 kPa (170 times lower than on Earth) and 97 percent CO2-dominated atmosphere (compared to 0.04 percent CO2 on Earth). The results were published by NASA in Journal Nature as to these findings. [https://www.nature.com/articles/s41586-022-04679-0] and on the Nasa website [https://mars.nasa.gov/mars2020/participate/sounds Referencing the paper published by NASA in Journal Nature as to these findings, analog astronaut and MDRS 286 crew artist Scott Beibin worked with master audio engineer John Knott to develop a software filter that could be used during Ptelepathetique concert performed during a two week immersive astronaut training in order to simulate the sounds of Mars. During the talk at 37C3 Beibin will discuss and demonstrate the comparison between the acoustic properties of the atmospheres of Earth and Mars via a demonstration of the software as well as musical Ptelepathetique performance. During the talk he will also present a short summary of the design patterns of the The Mars Desert Research Station which is used to train astronauts, researchers and students for offworld expeditions to the Red Planet. Additionally he will touch on the other aspects of his mission including 3D scanning of the surrounding geology as well as 3D printing of objects useful at the base using locally gathered and processed clay. This should be an out-of-this-world treat for the Space Cadet hackers and others who like making astronauts out of themselves. ++ Ptelepathetique is a musical project of inventor, engineer and artist Scott Beibin that focuses on the creation of instrumental cinematic psychoacoustic soundscapes designed to stimulate focus and creativity. Concerts usually happen outdoors in natural settings while using off-grid generated power while consisting of a mix of original musical composition as well as improvisation. Ptelepathetique is also the soundtrack for Beibin's projects The Groucho Fractal Show, AncientScan and the Mandelbot Ecotech Roadshow. ++ The Mars Desert Research Station (MDRS) is a Space analog facility in Utah that supports Earth-based research in pursuit of the technology, operations, and science required for human space exploration. The remotely isolated facility created by The Mars Society offers scientists, engineers and students rigorous training for human operations on Mars as is surrounded by a landscape that is an actual geologic Mars analog. about this event: https://events.ccc.de/congress/2023/hub/event/music_on_mars_a_musical_adventure_for_astronauts_and_the_space_cadets_who_love_them/

Dec 27, 202337 min

Lass mal das Innere eines Neuronalen Netzes ansehen! (37c3)

Nachdem in den letzten Jahren dauernd der Weltuntergang durch KI heraufbeschworen wurde, ist es an der Zeit nachzuschauen, was diese ominösen Neuronalen Netze (NN) eigentlich sind. Wir beginnen mit einer anschaulichen Erklärung, wie ein NN funktioniert und warum es keine wirkliche Ähnlichkeit mit deinem Gehirn hat. Anschließend schrauben wir die Black Box, wie es so schön heißt, einfach einmal auf: Wie können NN erklärbar gemacht werden? Warum trifft ein Neuronales Netz diese oder jene Entscheidung? Was an der politischen Forderung nach erklärbarer KI ist tatsächlich umsetzbar? Außerdem werden wir sehen, wie NN manchmal schummeln, um eine Vorhersage zu treffen. Im Gegenzug tricksen wir sie auch gezielt aus. Brauchen wir wirklich einen weiteren Vortrag über Künstliche Intelligenz? In den letzten Jahren war das Thema omnipräsent, Bilder werden jetzt generiert, Texte nicht mehr selbst geschrieben und ob ich kreditwürdig bin, prüft auch so eine KI. Und wer weiß, neulich klang der Chat Bot richtig menschlich, vielleicht hat er ja doch ein Bewusstsein. In diesem Vortrag geht es nicht um tolle Errungenschaften von KI-Systemen oder um „30 Prompts, mit denen du noch effektiver bist!“. Dieser Vortrag legt den Grundstein für ein Verständnis von maschinellem Lernen mit dem Ziel, dass du am Ende selbst die aktuellen Entwicklungen einschätzen kannst: Übertrumpfen Neuronale Netze irgendwann wirklich den Menschen? Oder können sie im Grunde gar nichts und sind massiv fehleranfällig? Und die Frage aller Fragen: Hat künstliche Intelligenz ein Bewusstsein oder steht kurz davor, eines zu entwickeln? Über all das kannst du dir nach dem Vortrag eine eigene fundiertere Meinung bilden. about this event: https://events.ccc.de/congress/2023/hub/event/lass_mal_das_innere_eines_neuronalen_netzes_ansehen/

Dec 27, 202339 min

Sendezentrum: Who Killed The Internet? (37c3)

Dec 27, 202346 min

Sendezentrum: Who Killed The Internet? (37c3)

Has the Internet and by extension social media become solely a theater of misinformation and non-linear amusement, fed to us by puppeteer algorithms? Another social media outreach is possible! Can the Fediverse make official communication of Public Administrations more accessible, more democratic, more unbiased and therefor trustworthy? Is it the public broadcasting of social media outreach — boring but necessary? Or will it it be a circus show rivalling the Xitter drama? Aiming the reach of Youtube and co? From juggling moderation, over server performances, to affordances for organising alternatives to the current Circus Maximus, these and more intersecting topics of governance and self-hosting will be discussed. Guests include digital activists, developers for ActivityPub, and the showmasters related to EU Voice and Video — a pioneering pilot project showing open source alternatives for social media outreach to EU institutions. Tune in to learn about political, social, and technical strategies that we can all use to promote the adoption of the Fediverse by national, local, and regional governments, as well as public and civil society institutions. Or in short: How to win over the clowns! about this event: https://events.ccc.de/congress/2023/hub/event/who-killed-the-internet-and-a-promising-alternative-for-public-communication-and-social-media-the-fediverse/

Dec 27, 202346 min

The Unfolding Space Glove (37c3)

Dec 27, 202339 min

Klimafreundliche Digitalisierung: Koalitionsvertrag vs. Wirklichkeit (37c3)

Dec 27, 202342 min

Bifröst: Apple's Rainbow Bridge for Satellite Communication (37c3)

Apple's cutting-edge emergency SOS and location sharing services provide crucial communication alternatives when no cellular network is available. This talk will shed light on how these satellite services work, how they are integrated into existing fall and crash detection, present the security measures employed to safeguard resource access and privacy, and explore how this communication is embedded within the operating system. With the release of the iPhone 14, users can reach out to emergency services by sending an SOS message via a satellite link directly from their phone. This use of the GlobalStar network facilitates two-way communication with emergency responders through the Messages app. Users can easily send text messages and respond to queries. This communication channel, due to its sensitive nature, demands robust security and authentication. It is imperative for Apple to ensure that the system is foolproof, negating the possibility of dispatching emergency responders to incorrect locations or individuals. Equally significant is the protection of the privacy of those in need, including their location and the nature of their emergency. In our talk, we demonstrate how a rooted iPhone without satellite capabilities can be tricked into thinking that it can communicate with the satellite network. This technique allows us to trigger various emergency situations without actually contacting emergency services. On the rooted iPhone, we can then inspect the transport security and key derivation while these features are being used. We will present various insights into the proprietary satellite communication protocol based on this analysis. Moreover, Apple's satellite features allow users to share their location in Find My with up to ten friends via a satellite link. This capability serves as a convenient tool for staying connected with friends and family while venturing off the beaten path. We’ll take a look into how this new Find My extension is implemented. about this event: https://events.ccc.de/congress/2023/hub/event/bifrost_apple_s_rainbow_bridge_for_satellite_communication/

Dec 27, 202340 min

Klimafreundliche Digitalisierung: Koalitionsvertrag vs. Wirklichkeit (37c3)

Wie der Bund seine IT einkauft und betreibt, hat eine erhebliche Auswirkung auf das Klima. GroKo und Ampel-Regierung waren und sind daher groß im Ankündigen grüner IT: in digitalpolitischer Umweltagenda, Koalitionsvertrag, Digitalstrategie und Gigabitstrategie. Wie weit Anspruch und Wirklichkeit auseinanderklaffen, erfrage ich als Bundestagsabgeordnete regelmäßig mit Kleinen Anfragen und schriftlichen Fragen. Ich verspreche kleine Hoffnungsschimmer, aber auch Frustration, denn meine neueste Anfrage vom November 2023 deckt schonungslos auf, wie intransparent und wie wenig nachhaltig die IT des Bundes immer noch ist und wie die Ampel sich die Latte immer tiefer hängt und trotzdem nicht drüber kommt. Das Potenzial des Bundes als Großverbraucher (z. B. mit über 180 Rechenzentren), als Finanzierer (z. B. von über 400 KI-Projekten) und als Regulierer (z. B. beim Energieeffizienzgesetz oder beim Überbau von Glasfaser) ist aber riesig, auch das werde ich vermitteln und die Stellschrauben beschreiben, an denen man drehen könnte, um IT weniger klimaschädlich zu machen – auch außerhalb des Bundes. Der Bund kauft jährlich für 260 Mrd. € ein, auch für mehr als 1 Mrd. IT, er betreibt über 180 Rechenzentren, förderte in 2023 über 400 KI-Projekte, setzt selbst über 100 Mal KI-Systeme ein und hat noch aus vielen weiteren Gründen mit seiner IT eine erhebliche Klimawirkung. Wie die GroKo hat sich auch die Ampel auf die Fahnen geschrieben, die Digitalisierung klimafreundlicher zu machen, ganz allgemein – durch Regulierung für alle (z. B. im Energieeffizienzgesetz), aber auch in eigener Verantwortung, bei den eigenen Rechenzentren, Software oder IT-Dienstleistungen. Die Ankündigungen dazu sind wohltönend, z. B. im Koalitionsvertrag und in der Digitalstrategie. Bundesbehörden und Rechenzentren sollen klimafreundlich(er) werden, es soll mehr Transparenz geben, z. B. über ein Energieeffizienzregister für Rechenzentren, es wurde versprochen, dass Vergabeprozesse die Nachhaltigkeit berücksichtigen sollen, auch beim Einkauf von IT und IT-Dienstleistungen, z. B. durch standardmäßigen Einkauf von IT mit Blauem Engel – auch bei Software. Selbst der Ausbau der Gigabitinfrastruktur sollte nachhaltiger werden. Aber passiert das alles auch? Ich nutze meine parlamentarischen Rechte als Bundestagsabgeordnete der Opposition (DIE LINKE), um über schriftliche Fragen und Kleine Anfragen Fakten dazu öffentlich zu machen und die große Kluft zwischen Anspruch und Wirklichkeit zu zeigen. Dabei geht es einerseits um das Vorhandensein von Daten (you get what you measure!) – tatsächlich also um einen Mangel an Transparenz zur Baseline – und andererseits um die Daten selbst, also wie gut oder schlecht die Nachhaltigkeit jeweils ist. Einen Schwerpunkt lege ich dabei auf die Klimafreundlichkeit von Rechenzentren, aber auch zu anderen Themen gibt’s für Euch Fakten: zur Wiederverwendung von Hardware, zum Recht auf Reparatur und der (versprochenen!) Förderung von Reparatur-Initiativen, zur Berücksichtigung von Nachhaltigkeitsaspekten bei der Vergabe von Hunderten Millionen Euro Fördergelder für KI-Projekte, zu Websites, Software und mehr. Da ich seit mehreren Jahren zur Nachhaltigkeit der Bundes-IT Kleine Anfragen stelle und die Digitalpolitik der Bundesregierung aus dem Maschinenraum des Bundestages verfolge, kann ich auch die Entwicklung beschreiben und werde Euch zeigen, wie die Ampel-Regierung sich einfach die Latte immer niedriger hängt und vermutlich trotzdem kaum eines ihrer Nachhaltigkeitsziele erreichen wird. Beim 37C3 werde ich erstmalig die Ergebnisse meiner jüngsten Anfrage vom November 2023 öffentlich vorstellen. Bei aller Frustration über den Status Quo zeigt mein Vortrag aber auch, welche riesigen Potenziale noch gehoben werden könnten, um tatsächlich eine nachhaltigere Digitalisierung zu erreichen – und dafür ist es nie zu spät! about this event: https://events.ccc.de/congress/2023/hub/event/klimafreundliche_digitalisierung_koalitionsvertrag_vs_wirklichkeit/

Dec 27, 202342 min

Bifröst: Apple's Rainbow Bridge for Satellite Communication (37c3)

Dec 27, 202340 min

The Unfolding Space Glove (37c3)

The Unfolding Space Glove transmits the relative position and distance of nearby objects as vibratory stimuli to the back of the hand, enabling blind people to haptically explore the depth of their surroundings. The talk will give a brief overview of the design research project, from the first prototypes to an empirical study and its publication, and provide insights into the underlying hardware and software. Being born blind or losing sight is a major challenge, as it impairs the ability to acquire information about surroundings, to manage everyday life independently and, consequently, to participate equally in social, public and economic life. Technical aids developed to assist VIPs with certain tasks work well in the laboratory but regularly fail in practice because they are bulky or user-unfriendly. As a result, the target group resorts to traditional tools or simply lives with the shortcomings. Given the rapid changes in technology and low cost of digital tools, I saw great potential in addressing this issue as an interaction design project. The result is an open-source Sensory Substitution device – the Unfolding Space Glove: it transmits the relative position and distance of nearby objects, detected by an on-board 3D camera, to the back of the hand in the form of vibratory stimuli. This allows the user to haptically explore the depth of the surrounding space and assists with navigation tasks such as object recognition and wayfinding. The prototype requires no external hardware, is highly portable, works in all lighting conditions, and provides continuous and immediate feedback – all while being visually unobtrusive. The basic premise of the proposed concept of Sensory Substitution is that the function of a missing or impaired human sensory modality can be replaced by stimulating another sensory modality using the missing information. This only works because the brain is plastic enough to learn to associate the new stimuli with the missing modality, as long as they share the same basic characteristics. There have been a number of projects looking at this, but so far very few practical implementations have been proposed, which in turn are used by a negligible number of people. While the technology used is sometimes highly sophisticated, design and usability often suffer. Taking into account the problems of existing devices and specifically addressing usability and interaction design requirements, the Unfolding Space Glove was designed and developed in a four-year interaction design research project. In 2021, the prototype was tested in an empirical study with 14 sighted and blind subjects, the results of which were published in a scientific, peer-reviewed paper in 2022. I would like to introduce you to the field of Sensory Substitution, share this project with you, show pitfalls, problems (for me coming from a non-IT background) and some technical details and ask for your feedback and input. I will have the device with me if you want to have a closer look at it after the talk. Testing would only be possible in smaller groups by appointment. about this event: https://events.ccc.de/congress/2023/hub/event/the_unfolding_space_glove/

Dec 27, 202339 min

Dicke Bretter: Die Congress Edition (37c3)

Dec 27, 202344 min

The Unsung Heroes of Imaging (fireshonks)

Dec 27, 202341 min

Dicke Bretter: Die Congress Edition (37c3)

Seit einem knappen Jahr machen wir zusammen Dicke Bretter, den Podcast, der die Orte vorstellt, wo Netzpolitik gemacht wird, und einen Ausblick auf aktuelle Debatten gibt. Elina und Elisa werfen in der Congress-Edition einen Blick aufs letzte und aufs nächste Jahr: Welche Policy-Bretter müssen wir bohren, auf welchen sollten wir tanzen? Wir nehmen speziell die Gesetzgebung im Bund unter die Lupe und haben dafür einen Special Guest: Faxorzistin Bianca Kastl! about this event: https://events.ccc.de/congress/2023/hub/event/dicke-bretter-die-congress-edition/

Dec 27, 202344 min

The Unsung Heroes of Imaging (fireshonks)

This talk will introduce luma-chroma colour spaces: what they are, their reason for existence, why they are useful, and real world examples. Hidden, like a hero whose tale is lost to time, there is a common thread weaving through analog television, video, and modern digital imaging. That thread is called luma-chroma colour spaces, and powers how humans are able to see, process, and transmit colours across a variety of media and purposes. This talk is intended to lift the veil about these color spaces; we will cover their origins, what they are intended for, and showcase samples covering the past 60 years of imaging technologies. Examples include (but are not limited) to: NTSC, PAL, the Okta color spaces, YCbCr, XYB... about this event: https://events.ccc.de/congress/2023/hub/event/the-unsung-heroes-of-imaging/

Dec 27, 202341 min

Handsfree assistive technology (37c3)

I am paralysed from the chest down, have no hand functions and sit in a power wheelchair. I will share some insights on spinal cord injury and my experiences of how I work, live and travel using a power wheelchair. There are millions of people who cannot control a computer, tablet, or smartphone with their hands. Assistive technology supports the main functionalities which are needed: mouse movement and different kinds of clicks. My portfolio of hands-free assistive technology enables me every day to be active without using my hands or feet. I’m going to present solutions which make my everyday life more comfortable. One moment changed my life. I had a swimming accident in 2017, a big wave took me and I broke my neck. I am paralysed from the chest down, have no hand functions and sit in a power wheelchair. I cannot cough up independently and rely on 24/7 help to live an active life. In the first few months, I was not able to breathe, eat, drink, speak, walk etc. by myself. In the meanwhile, I made some significant progress and began to work independently using my computer and assistive technology. Step-by-step I came back to a new kind of life. I love travelling and am fascinated by innovative technologies. I love my job in the IT industry and passionately work full-time for a startup company in Berlin. I will share some insights on spinal cord injury and my experiences of how I work, live and travel using a power wheelchair. There are millions of people who cannot control a computer, tablet, or smartphone with their hands. Assistive technology supports the main functionalities which are needed: mouse movement and different kinds of clicking. I'm really lucky to be part of the current generation. In the last couple of years, the major technology companies released significant updates in regards to voice recognition, universal design, accessibility and assistive technology. My portfolio of hands-free assistive technology enables me every day to be active without using my hands or feet. I’m going to present Solutions which make my everyday life more comfortable I will share my personal setup which includes software and hardware. You can assume that I tested all of these products, and I’m using them in my smart home. Assistive technology is going to change the lives of many forever and is much more vital than ever before. Here are a few examples which I'm going to present. My remodelled VW Transporter which enabled me to be the co-driver My Smart home setup for lights, doors, tables, couch, TV, curtains, temperature and kitchen with speech, voice control and apps My power wheelchair and its individual configuration so I can drive using my chin or head A robotic arm which allows to be a personal assistant to drink, smoke or scratch myself My computer, smartphone and headphone setup includes a head movement mouse, voice and switch control for dictation and commanding as well as a Bluetooth module to control the smartphone with single button clicks Last but not least, I love doing videos using my GoPro and I'm happy to share my perspective about this event: https://events.ccc.de/congress/2023/hub/event/handsfree_assistive_technology/

Dec 27, 202340 min

Unlocked! Recovering files taken hostage by ransomware (37c3)

Dec 27, 202340 min

Unlocked! Recovering files taken hostage by ransomware (37c3)

We present an analysis and recovery method for files encrypted by Black Basta, the "second most used ransomware in Germany". We analysed the behaviour of a ransomware encryptor and found that the malware uses their keystream wrongly, rendering the encryption vulnerable to a known-plaintext attack which allows for recovering affected files. We confirmed the finding by implementing tools for recovering encrypted files. We have made our tools for decrypting files without access to the actual key available to victims directly, through BSI, and to incident responders, as well as German and international law enforcement. Now, we are actively publishing these tools, along with the knowledge shared in our talk, empowering affected organizations to recover some of their files without succumbing to paying the criminals. We present an analysis of the Black Basta ransomware and tools for recovering encrypted files without access to the official decryptor or key. Black Basta is "the second most used ransomware in Germany", encrypting Windows computers and ESXi hosts running virtual machine workloads. Our decryptor-tool exploits a weakness in the cryptographic code in the Black Basta malware. This weakness allows to (partially) recover encrypted files without access to the decryptor and without needing the cryptographic keys used by the ransomware. We dive into the details of the cryptographic operations used by Black Basta and explain how the malware fails to use the cryptographic primitives properly. In particular, the Black Basta ransomware encrypts victim files using a stream cipher. Files smaller than 5000 bytes are fully encrypted. Larger files are only partially encrypted for efficiency reasons. We found that for larger files, the ransomware re-uses the same cryptographic keystream for encrypting different parts of the same file, thereby breaking the security of the used stream cipher. If the plaintext of any encrypted file part is known, the keystream can be recovered and used to decrypt (large parts of) the target file without the underlying cryptographic key. Affected organisations can check whether the variant of the Black Basta malware found in their network is susceptible to this attack by purposefully letting the ransomware encrypt a large file (512 MB) containing only zero bytes. If the encrypted parts of the file are identical when analysing the encrypted file (e.g. in a hex editor), recovery is likely possible using the tools presented here. Depending on the encrypted file, parts of the plaintext may be known. For instance, VM disk images are likely to contain stretches of zero bytes. As part of the tooling we have developed, we have implemented a heuristic to detect encrypted zero blocks in encrypted files. If found, (large parts of) the encrypted file can then be recovered. For other types of files, individual plaintext blocks may be recoverable via other means (e.g. using backups or specialised tools), also enabling data recovery. The decryption tools can be found here: https://github.com/srlabs/black-basta-buster about this event: https://events.ccc.de/congress/2023/hub/event/unlocked_recovering_files_taken_hostage_by_ransomware/

Dec 27, 202340 min

Handsfree assistive technology (37c3)

Dec 27, 202340 min

The Diner Podcast live: (37c3)

Dec 27, 202347 min

The Diner Podcast live: (37c3)

Judith und Klaudia sprechen mit einer Gästin darüber, wie Frauen in technische Berufe und auch in das CCC-Umfeld kommen, was sie dort erleben und wie wir es Frauen vielleicht noch leichter machen können, sich mit den Nerds wohlzufühlen. about this event: https://events.ccc.de/congress/2023/hub/event/the-diner-podcast-live-frauen-in-der-technik/

Dec 27, 202347 min

Gemeinsam gegen Cybermobbing (fireshonks)

Dec 27, 20232h 7m

Gemeinsam gegen Cybermobbing (fireshonks)

Cybermobbing kann uns alle treffen. Es ist wichtig, darauf vorbereitet zu sein, ehe Ihr mitten drin steckt, ob als Opfer, Bystander oder Upstander. Dabei will Euch dieser Talk helfen. Ich erzähle Euch meine Geschichte als seit knapp zwei Jahren Opfer von Cybermobbing mit Update zum Fort- und Weitergang seit der ersten Version dieses Talks auf der GPN 2023, erkläre Euch, wie es zu Cybermobbing kommen kann, werde Skills für Opfer und Mitbekommende vorstellen. Jetzt kann ich Euch auch noch mehr zu meiner Geschichte und den Hintergründen erzählen. Dieses Mal kommt auch Jura nicht zu kurz. In einem Exkurs ins Strafrecht erkläre ich Euch, warum es manchmal trotz menschlich-moralischer Überzeugung von der Täter:inschaft von Personen nicht für strafrechtliche Konsequenzen reicht, wie sich Opfer gegen schnelle Einstellungen wehren können und warum auch das oft nicht erfolgreich ist. Weiter geht's ins Zivilrecht, denn auch da gibt es Möglichkeiten, wie sich Opfer gegen Täter:innen wehren können, ganz unabhängig von den strafrechtlichen Entscheidungen. Und wir sprechen darüber, was Ihr machen könnt, wenn Ihr Cybermobbing mitbekommt, wie Ihr vermeidet, Bystander zu sein und wie Ihr Upstander sein könnt. Auch da werde ich aus eigenen Erfahrungen erzählen, denn nur wenn wir Opfer reden werden die Gefahren von Cybermobbing greifbarer und die Auswirkungen nachvollziehbar. Nur wenn wir uns gemeinsam gegen Cybermobbing stellen können wir Cybermobbing beenden. about this event: https://events.ccc.de/congress/2023/hub/event/gemeinsam-gegen-cybermobbing/

Dec 27, 20232h 7m

How to Hack Your Way to Space (37c3)

Dec 27, 20231h 1m

All cops are broadcasting (37c3)

Dec 27, 20231h 3m

Opencoil (37c3)

OPENCOIL and the fine art of appropriating micro-mobility services for fun and debate. Since the dawn of deep mediatization (Hepp, 2020), the start-up scene posing as digital pioneers has been declaring a state of revolution, seeking nothing but disruption with the introductions of their products into society. A goal they definitely achieved with the introduction of micro-mobility services to our cityscapes / public space. In 2020, Dennis de Bel and Anton Jehle therefore initiated the OPENCOIL research project to gain a better understanding of this latest venture capitalist phenomenon, share knowledge, establish a community, and develop tools to provoke a public debate. Later that year, they organized their first public intervention, the roaming speedshow, in Berlin and shared their insights with the community at rc3 (https://media.ccc.de/v/rc3-11575-opencoil\_a\_roaming\_speedshow). The ever changing landscape of micro-mobilty kept Speedy and Scooty invested and they are here at 37C3 to give an update on the OPENCOIL project! The term "revolution" has become a beloved buzzword for the platform economy. to take the world by storm: when in early 2018, thousands of electric kick scooters, or “trotinettes” as the french like to call them, flooded the city of Paris , the media sure was quick to coin this the "micromobility revolution" (Medium, 2018). As the french are somewhat experts in the field of revolutionizing, Paris is arguably the key to any successful uprising. The seemingly endless back and forth between regulation and cooperation, between sharing and exploiting, progress and regression of micromobility can be observed here like in no other European city. As of August 31st 2023, the trotinettes have been banned from the streets of Paris with almost 90 % of public votes supporting the decision. Today the Bastille square is completely freed from trottinettes: a revolution by the people. With this years talk Scooty and Speedy will be problematising the rise (and fall) of shared mobility and its effects on the basis of Paris as well as related interventions and observations of the past three years. about this event: https://events.ccc.de/congress/2023/hub/event/opencoil/

Dec 27, 202356 min

How to Hack Your Way to Space (37c3)

Embark on Libre Space Foundation's journey into the world of open-source space exploration, where a passionate community of hackers and makers is challenging the traditional defense-driven approach to spacefaring. Discover how we are democratizing space by embracing open-source technologies, community collaboration, and a commitment to sustainability. The current state of the space ecosystem is characterized by its reliance on defense-oriented policies and outdated systems, hindering the true potential of space exploration. Despite the promise of Space 4.0, the reality is that space remains largely inaccessible to the public at large. Against this backdrop, a group of hackers and makers is revolutionizing the space industry. By promoting the hacker ethos of innovation, resourcefulness, and open-source principles, they are challenging the status quo and delivering creativity and accessibility into the space sector. Driven by the hackerspace movement and the broader community, we, Libre Space Foundation, are actively building our own satellites, space technologies, sharing knowledge and resources, and pushing the boundaries of space exploration. Our mission is to democratize space, making it available to everyone, regardless of background or resources. This emerging movement faces unique challenges, including working within a small, underfunded ecosystem, developing software and hardware, mapping out processes amidst complex space law and global politics, and ensuring long-term sustainability without relying on external funding. To overcome these challenges and harness the full potential of this movement, we propose a manifesto with four pillars: Open Source: All technologies developed for outer space shall be published and licensed using open source licenses. Open Data: All data related to and produced in outer space shall be freely accessed, used and built upon by anyone, anywhere, and shall be shared and managed according to the principles above. Open Development: All technologies for outer space shall be developed in a transparent, legible, documented, testable, modular, and efficient way. Open Governance: All technologies for outer space shall be governed in a participatory, collaborative, direct, and distributed way. By embracing these pillars, we can create a more open, inclusive, and sustainable space ecosystem that empowers individuals and communities to participate in the exploration of the cosmos. about this event: https://events.ccc.de/congress/2023/hub/event/how_to_hack_your_way_to_space/

Dec 27, 20231h 1m

All cops are broadcasting (37c3)

This talk will present details of the TETRA:BURST vulnerablities - the result of the first public in-depth security analysis of TETRA (Terrestrial Trunked Radio): a European standard for trunked radio globally used by government agencies, police, military, and critical infrastructure relying on secret cryptographic algorithms which we reverse-engineered and published in August 2023. Adding to our initial disclosure, this talk will present new details on our deanonymization attack and provide additional insights into background and new developments. In August 2023, we published the TETRA:BURST vulnerablities - the result of the first public in-depth security analysis of TETRA (Terrestrial Trunked Radio): a European standard for trunked radio globally used by government agencies, police, military, and critical infrastructure. Authentication and encryption within TETRA are handled by proprietary cryptographic cipher-suites, which had remained secret for over two decades through restrictive NDAs until our reverse-engineering and publication. TETRA:BURST consists of five vulnerabilities, two of which are critical, including the backdoored TEA1 cipher (crackable in minutes on commodity hardware by a passive adversary), a keystream recovery attack (which works regardless of the cipher employed), and a deanonymization attack with counter-intelligence implications. In this talk, we will discuss and demonstrate the TETRA:BURST vulnerabilities themselves and will - for the first time - disclose the details of the TA61 identity anonymization primitive and our Meet-in-the-Middle deanonymization attack against it. In addition, we will provide more background on how the TEA1 backdoor proliferated throughout Europe and provide attendees with an update on new developments since our initial disclosure, the future of TETRA, and the vast amount of TETRA hardening work that still needs to be done in critical infrastructure. about this event: https://events.ccc.de/congress/2023/hub/event/all_cops_are_broadcasting/

Dec 27, 20231h 3m

Opencoil (37c3)

Dec 27, 202356 min

aaaaaaaaaaa! - Mein regulärer Ausdruck ist böse (fireshonks)

Dec 27, 202345 min

aaaaaaaaaaa! - Mein regulärer Ausdruck ist böse (fireshonks)

Kurze Einführung in reguläre Ausdrücke, Konzept und Verwendung - bis zum Ausnutzen bestimmter Kombinationen von regulären Ausdrücken und Payload für einen Regular Expression Denial of Service (reDoS)-Angriff Reguläre Ausdrücke wie /^([a-zA-Z0-9])(([\-.]|[_]+)?([a-zA-Z0-9]+))*(@){1}[a-z0-9]+[.]{1}(([a-z]{2,3})|([a-z]{2,3}[.]{1}[a-z]{2,3}))$/ oder einfacher ([a-zA-Z]+)* verwirren dich? Keine Sorge, je nach zu validierendem Input verwirrt es deinen Computer auch! Dieser Talk befasst sich mit regulären Ausdrücken: Wir steigen ein mit einem kurzen Ausflug in die theoretische Informatik und endliche Automaten, befassen uns allgemein mit regulären Ausdrücken und warum diese nützlich sind, bis wir herausfinden, was es mit bösen regulären Ausdrücken auf sich hat - und wie diese mit dem entsprechenden Payload für Denial of Service-Angriffe genutzt werden können. Um von diesem Talk etwas mitnehmen zu können, reicht es, schon mal was von regulären Ausdrücken gehört und ggf. sehr einfache Versionen selbst schon einmal angewandt zu haben. Du musst kein Regular Expression Pub Quiz gewonnen haben, um etwas zu verstehen, ganz im Gegenteil. Wahrscheinlich ist es für dich sogar etwas langweilig, wenn du RegEx-Pro bist. about this event: https://events.ccc.de/congress/2023/hub/event/aaaaaaaaaaa-mein-regulrer-ausdruck-ist-bse/

Dec 27, 202345 min