39C3

Version 1.1 2025-12-29 15:45 Dec. 29, 2025

–

Version 1.1 2025-12-29 15:40 Dec. 29, 2025

We have new sessions!

• “State of the Decentralization in Industry” by Diego Salazar
• “Lightning Talks” by Nic(er/ihm) (he/him)
• “Talk with Industry Cryptographers and Developers” by Diego Salazar
• “Collage” by Deri-vative
• “SeedSigner DIY Bitcoin signing device build workshop” by freerk
• “Introduction to Hardware Hacking with the Sword of Secrets (On-going)” by Creator
• “Anarchistischer Antifaschismus, Queere Präfiguration, Progressive Streitkultur & Intersektionale Bündnisse” by Tomate_aka_Radikale_Liebe
• “Johanna & Monsieur Le Schlö” by Monsieur Le Schlö
• “Inofficial SailfishOS User Meetup” by deepbluev7
• “"Well-Prepared, Still LARPing"”
• “iCoo - A Platform for Activists” by ObserverZero
• “Firefox Lead Engineer - Ask Me Anything” by mozdeco
• “web browser fingerprinting: survey of attacks and mitigations” by ylt
• “Workshop: Luanti / Minetest Weltenbauer” by pnrd
• “Artifitial life from random programs” by alg
• “Transitous Meetup” by Julius Tens, Volker Krause, Jonah Brüchert

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

• “Demo-LARPs / LARPs als Demo: Spiel, Spaß, Verwirrung und klare Kante im Protest” by Tomate_aka_Radikale_Liebe, jstc (He / Him), loufo (Dec. 29, 2025, 1 a.m. → Dec. 29, 2025, 1:30 a.m.)
• “CADUS x Off-Grid-Assembly” by Anna-Lea (Dec. 27, 2025, 3 p.m. → Dec. 29, 2025, 3 p.m.)
• “FAFO: How we stopped worrying and bought an Electron Microscope” by hug0 (Dec. 29, 2025, midnight → Dec. 29, 2025, 12:30 a.m.)
• “Camp27 Family Village Kickoff” by aram (Dec. 29, 2025, 8:45 p.m. → Dec. 29, 2025, 8:15 p.m.)
• “A Brief History of Keeping Secrets” by Brandon Goodell (Dec. 29, 2025, 2:30 p.m. → Dec. 29, 2025, 7 p.m.)
• “Working With (and Around) Research Infrastructure for Excellent Citizen Science – Understanding User Stories and Needs” by katy13 (Dec. 29, 2025, 10:30 a.m. → Dec. 30, 2025, 10:30 a.m.)
• “Pwn Basics - Hacking Web Applications for Beginners” by Dr. Affe (Dec. 28, 2025, 10:30 p.m. → Dec. 28, 2025, 11 p.m.)

Version 1.1 2025-12-29 00:07 Dec. 29, 2025

We have new sessions!

• “Care.exe has stopped responding” by artnplay
• “Powerpoint Karaoke” by Dimi, David
• “Workshop: Analoge Computer für Anfänger:innen” by pnrd
• “Who's afraid of anonymity? A philosophical and political toolkit” by Casey Ford
• “Communicate with governments with matrix (AMA about ZaPuK)” by Yan 't' Minagawa
• “Uprising in Belarus revisted 5 years later” by abcdd
• “bauen der xOTA Antenne / building the xOTA antenna” by DK1BOU
• “Modern Typesetting and LaTeX Alternative -- Typst Meet-Up” by SwaP
• “Für eine nachhaltige, global gerechte Digitalisierung- B&B Community Meet-Up” by benks
• “Digitale Kehrwoche: Workshop: wie kann ich Daten bei datensammelnden Webseiten löschen lassen?” by Alvar, tntrinh
• “B7.Lab”
• “Erfahrungsaustausch zu kommunalem Klimagerechtigkeitsaktivismus” by moritzl
• “How does VC funding work, actually?” by aricake
• “Für Datenschutz, Menschenrechte & Artenschutz - B&B Community Meet-Up” by benks
• “Einführung in StreetComplete für OpenStreetMap” by jkoe
• “Nudeln Hacken / Hacking Noodles 2” by StefanH
• “Repressions and Surveillance of Pro-Palestine Speech in Germany” by t3
• “Mesh Radio Workshop” by Jitter
• “Breaking into Wireless Smart Homes, Z-Wave example” by PoltoS
• “SeedSigner DIY Bitcoin signing device build workshop” by freerk
• “Care.exe has stopped responding” by artnplay
• “#unplugTrump – Deine Daten, deine Entscheidung” by Gerd Kant
• “Global Climate Justice & Digital Empowerpent ! B&B Community Meet-Up” by benks
• “Communist meetup #1” by jardi, jardi (He/him, they/them)
• “DDNet Meetup” by Zwelf
• “Warum ist die Raumzeit krumm?” by artnplay
• “Antifa Recherche Meetup”
• “All CTFers and PWNers welcome: Pwndbg meetup” by disconnect3d
• “Demo-LARPs / LARPs als Demo: Spiel, Spaß, Verwirrung und klare Kante im Protest” by Tomate_aka_Radikale_Liebe, jstc (He / Him), loufo
• “Wie kann gute Männerarbeit gelingen? [all creatures welcome]” by muckla
• “Lessons from a Public University: Bringing Institutions into the Fediverse” by melbartos
• “FLINTA* CRUISING**💋🌶️🍑👀💦 (*see description; if this sounds appealing to you it’s probably for you) 18+” by zackstarkid (he/him (they/them if ur trans))
• “Warum ist die Raumzeit krumm?” by artnplay
• “CADUS x Off-Grid-Assembly” by Anna-Lea
• “Der Schatz an der Moorweide” by artnplay
• “Männerkreis: Wie kann gute Männerarbeit gelingen? [nur Cis Männer]” by muckla
• “ShapeIt — Open Source 3D Modeller” by langfingaz (he/him)
• “Stop Neurodiverse Discrimination Now” by Lucifer
• “Long Term Support bei Jugend hackt - Infos” by eliah
• “Building the next web” by Ryta
• “Jugend hackt-Meetup” by Jugend hackt-Team
• “Eigentum: Was soll das?” by simon123
• “Freifunk zum Anfassen und Router zum Mitnehmen” by skorpy (she/her)
• “Situation on anarchist prisoners in Belarus” by abcdd
• “New features in Bitcoin self-custody” by Polto, Darko
• “Long Term Support bei Jugend hackt - Vernetzung” by eliah
• “Intro to the Critical Decentralization Cluster” by Diego Salazar
• “The CDC Badge: conference badge & devboard with TROPIC01 and ESP32-S3” by dllud
• “Whiskey Tasting”
• “Der Schatz an der Moorweide” by artnplay
• “re:luks — Unattended Power Cycles for your FDE Servers” by langfingaz (he/him)
• “Trans* Treff” by Varia (Sie/Dey/En)
• “Warum ist die Raumzeit krumm?” by artnplay
• “Leftathlon - Spendenlauf gegen Rechts (VR & analog) - IF EVERYONE VOTES RIGHT, RUN LEFT! -” by artnplay
• “TBA”
• “Against Antisemitsm Jewish Safe Space” by wackelpudding
• “Passkeys : the good, the bad, the ugly” by btchip
• “AfZK - Archiv für Zeitgenössische Kulturgeschichte” by artnplay
• “Kimchi Making” by ingo
• “Robo Rallye spielen für Kids” by pnrd
• “let's play geoguessr!” by dotmeow
• “Warum ist die Raumzeit krumm?” by artnplay
• “Tales of apartheid” by faji
• “Zerocat Chipflasher” by Zerocat
• “Matrix Community Meetup” by The one with the braid (she/her)
• “Wie wir auf den höchsten Kirchturm der Welt stiegen, um der Kirche beim Klimaschutz auf das Dach zu steigen” by Samuel_77
• “Roboter-Action mit dem mBot2” by Gerd Kant
• “Eltern-Fragen zum Anfängerschwimmen”
• “Signal, Matrix & Threema Contact Verification Meeting” by langfingaz (he/him)
• “Knoten-Workshop!!11!” by Samuel_77
• “Where Do All The Leaks Go? OpenAleph Roundtable” by catileptic (they/she)
• “Logo! - wir sehen Kindernachrichten” by elzbeth
• “OpenRTX Meetup” by Marco
• “AfZK - Archiv für Zeitgenössische Kulturgeschichte” by artnplay
• “Iznova medžuslovjansky! Igry i zabavy.” by doofus
• “1965 + 60 Jahre algorithmisches Zeichnen mit Computern” by artnplay
• “"What can a mixnet do? Strategies for network-level anonymity"” by Alexis Roussel, Casey Ford
• “Studio Drölf”
• “hacking medical research - bonus round” by ShadowCone (she/her)
• “Probiotic making&cooking” by algoldor
• “Intro to Tropicsquare TROPIC01 Workshops at CDC”
• “Selbsthilfegruppe Unternehmens IT / Enterprise IT support group” by d2887
• “Der Schatz an der Moorweide” by artnplay
• “Katzen Öhrchen selber basteln [all creatures welcome]” by Franzi
• “GSfP - Gesche Schaars feiner Podcast”
• “Super Mario Odyssey(Decomp) — A tale about decompiling and research” by MonsterDruide1
• “Einen CLI mit Rust erstellen” by Dimi
• “Making own Z-Wave (or Zigbee) device from scratch and assemble a Z-Wave (or Zigbee/Matter) controller” by PoltoS
• “LessWrong Congress Meetup” by saxnot (he/him)
• “Jugend hackt-Stickpatch mit LED” by anma
• “p2panda - Project updates & meetup” by adz
• “tech-coops Q&A” by Carla
• “Lounge Tunes” by yolo_crew
• “1965 + 60 Jahre algorithmisches Zeichnen mit Computern” by artnplay
• “Making own Z-Wave (or Zigbee) device from scratch and assemble a Z-Wave (or Zigbee/Matter) controller” by PoltoS
• “The DarkFi super-app” by Yuki
• “Migrantischer Widerstand im Hamburg der 1990er Jahre” by Tomate_aka_Radikale_Liebe
• “Elixir Name Badge Workshop” by Tim Pritlove
• “Whats new in Reticulum” by Liam, fluorescent_beige
• “git-annex workshop” by Atemu
• “OpenStreetMap” by Gerd Kant
• “Solidarity Finance on P2P Rails” by Joshua Davila
• “Kids-Rope-Rescue” by Anna-Lea
• “Freifunk zum Anfassen und Router zum Mitnehmen” by skorpy (she/her)
• “Ich weiß, wen ich irgendwie kenne, aber wer kennt eigentlich irgendwie mich? Pt. I: Talk” by Annika
• “Care.exe has stopped responding” by artnplay
• “FAFO: How we stopped worrying and bought an Electron Microscope” by hug0
• “ShapeIt — Open Source 3D Modeller” by langfingaz (he/him)
• “1965 + 60 Jahre algorithmisches Zeichnen mit Computern” by artnplay
• “Burn Gatekeepers, not Books!” by jinxx, tomate

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

• “Zyklus hacken – Power to the Cycles [all creatures welcome]” by trëma (Dec. 27, 2025, 8:45 p.m. → Dec. 28, 2025, 8:30 p.m.)
• “Media needing categories: Wir räumen auf!” by GPSLeo (Dec. 29, 2025, 8:30 p.m. → Dec. 29, 2025, 10 p.m.)
• “Trans Austauschrunde [TINA* only]” by captain-maramo (Dec. 28, 2025, 8:30 p.m. → Dec. 27, 2025, 8:45 p.m.)
• “DIY Bioreactors for mycology and biohacking” by Augustin Bielefeld (Dec. 28, 2025, 8 p.m. → Dec. 28, 2025, 8:30 p.m.)
• “(Outdoor) Ballooning with antennas” by chris (Dec. 28, 2025, 2 p.m., CDC Circle → Dec. 29, 2025, 1 p.m., CDC Triangle)
• “Antifa-Ost Komplex - What´s with this terrorist organization?” by abcdd (Dec. 28, 2025, 11 p.m., Komonin → Dec. 29, 2025, 7 p.m., SoS Stage H)
• “How to thrive in chaos, Part II” by sarah31415 (Dec. 27, 2025, 7:30 p.m. → Dec. 27, 2025, 6:30 p.m.)
• “Alternative Nutzungsweisen von Microblogging” by sozialwelten (er/ihn) (Dec. 29, 2025, 11 a.m. → Dec. 29, 2025, 10:30 a.m.)
• “Fedi stories in/for/out (EU) Public Admin. Adult version.” by ZZEPPOSS (Dec. 27, 2025, 8 p.m., Hall 5 → Dec. 30, 2025, 1:30 p.m., Assembly Area)
• “Fediverse als Business: Gründungsideen und Geschäftsmodelle / Fediverse as a business: start-up ideas and business models” by sozialwelten (er/ihn) (Dec. 29, 2025, 11:45 a.m. → Dec. 29, 2025, 11:15 a.m.)
• “Kein Palantir BW” by NaN (he/him), Dam0k1es, Leibi (Dec. 29, 2025, 7:30 p.m. → Dec. 29, 2025, 1:30 p.m.)
• “Reform des Nachrichtendienstrechts: Austausch über präventive Schutzkonzepte für hochgefährdete Personen” by eugene (he/him) (Dec. 30, 2025, 1 a.m., SoS Lecture 6 → Dec. 29, 2025, 11:30 p.m., Komonin)
• “Working With (and Around) Research Infrastructure for Excellent Citizen Science – Understanding User Stories and Needs” by katy13 (Dec. 28, 2025, 10:30 a.m., Komonin → Dec. 29, 2025, 10:30 a.m., SoS Stage H)
• “Federating knowledge: exploring ways to bridge wikis and notes” by Tommi (Dec. 27, 2025, 5 p.m. → Dec. 30, 2025, 1:40 p.m.)
• “GuteN8Geschichte "Das NEINhorn" - Tag 1” (Dec. 27, 2025, 8 p.m. → Dec. 27, 2025, 8:15 p.m.)
• “Friedensliteratur und Antikriegsaktivismus - "Die Waffen nieder" (1889)", "Im Westen nichts Neues (1929)", "Runaround (1942)" & HEUTE?” by Tomate_aka_Radikale_Liebe (Komonin → SoS Stage H)
• “P4P Meet & Greet” by Mathias, zelf, Mathias Jud (P4P Tea House → Bits&Bäume Living Room)
• “Programming with the TROPIC01 open architecture secure element” by Pavel Polach (Dec. 29, 2025, 3 p.m. → Dec. 29, 2025, 2 p.m.)

Version 1.1 2025-12-27 13:08 Dec. 27, 2025

We have new sessions!

• “Drehmeierbasteln”
• “stornoline” by Sassi
• “Wondrous mathematics: How does artificial intelligence such as ChatGPT accomplish the feat of learning?” by IngoBlechschmidt
• “Real World Timestamping With OpenTimestamps” by Peter Todd
• “Aladdin” by Hamdi
• “Chaos im THW Meetup” by jp
• “Qubes OS meetup” by qubedmaiska
• “Antennas and 3D printing” by Marco
• “Modular Synthesizer Anfängerworkshop mit Software” by wdlbrmft
• “Stickmaschinen & Ink/Stitch Meetup” by becca
• “NextGraph Demo: Local First, E2EE, RDF graph DB, and a Reactive ORM SDK” by Laurin Weger
• “Yes, even you can harden your systemd services!” by whoami (she/they)
• “Bio - Hacking - Science” by Fpiras
• “Disclosure at DPA” by w1ntermute
• “Foundation workshop: Hands-on, how does the Internet work?” by IngoBlechschmidt

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

• “Digitale Infrastruktur für Videos und Podcasts: WissKomm Wiki Workshop” by TimBorgNetzWerk (Dec. 30, 2025, 1:30 a.m. → Dec. 29, 2025, 9:30 p.m.)
• “GIS in Crisis Areas: Cards, Chaos & Cadus” (Dec. 27, 2025, 3 p.m. → Dec. 28, 2025, 7 p.m.)
• “Queering (and Imploding) Drone Usage at EU Borders” by isenguard, @ndi (Dec. 28, 2025, 10:30 a.m. → Dec. 28, 2025, 2 p.m.)
• “A Brief History of Keeping Secrets” by Brandon Goodell (Dec. 27, 2025, 7 p.m. → Dec. 29, 2025, 2:30 p.m.)
• “We show Quadball🏐🤾🏿‍♀️🏳️‍⚧️: brooms, a snitch, six hoop-goals and lots of gender diversity and fun” by jendrik (any), saxnot (he/him) (Dec. 27, 2025, 10:30 p.m. → Dec. 28, 2025, 6 p.m.)

Version 1.1 2025-12-27 10:36 Dec. 27, 2025

We have new sessions!

• “Transdermal HRT Brewing for Beginners placeholder” by Lizzz (they / she)
• “Twilight Imperium Gathering” by beetroot, beetroot (he/him)
• “Intro to SPARQL and Wikidata Query Service (EN)” by Lucas Werkmeister, Andrew McAllister
• “Decentralized Syndication — The Missing Internet Protocol” by Tautvilas, Tautvilas Mečinskas
• “DIY Bioreactors for mycology and biohacking” by Augustin Bielefeld
• “Mechanical keyboards show and tell” by deBaer
• “XMPP and metadata” by mathieui
• “Pre-Quantum to Post-Quantum Cryptography” by Freeman Slaughter
• “Fedi stories in/for/out (EU) Public Admin. Adult version.” by ZZEPPOSS
• “Radicle: P2P, Censorship-Resistant Code Collaboration Based on Git” by Lorenz Leutgeb
• “Battlemesh Meetup” by battlemesh
• “Reform des Nachrichtendienstrechts: Austausch über präventive Schutzkonzepte für hochgefährdete Personen” by eugene (he/him)
• “(Un-)Hacking Digital Sovereignty” by Alex
• “How to Not Leak (Too Much) – Reclaim military tools for civilian use.”
• “How to Contribute to Open Source Projects: Stack Wallet, Monero, Tor (Arti!)” by Joshua Babb
• “A Brief History of Keeping Secrets” by Brandon Goodell
• “dn42/Freifunk multicast routing/peering workshop” by Linus Lüssing
• “Applying cryptoanarchy in individual and communal sovereignty” by Mario
• “Leveraging LLMs for Preventing De-anonymization: Occlumask” by Alice Margatroid
• “Die UN-Cybercrime-Konvention” by ulif
• “Datenschutz-Sprechstunde” by Alvar
• “iroh p2p chat over gossip” by Floris Bruynooghe
• “WASH-Sprechstunde” by Anna-Lea
• “Open Legal Q&A with Judith de Boer: "Can I Get Arrested for Writing Code?"” by Kirill
• “Fighting the EU Surveillance Law Apocalypse Continued” by Chloé Berthélémy
• “Bündnis Hansaplatz - Coalition Against AI CCTV and Displacement” by Gnitze
• “(Outdoor) Ballooning with antennas” by chris
• “qaul - Decentralized Off-the-Grid Mesh Communication App” by Mathias, Mathias Jud
• “Accessing Wikidata Data with Python (EN)” by Andrew McAllister
• “P2P μVMs: pluralistic composability & interoperability for decentralized networks & applications” by tg-x
• “On the Limits of Decentralization” by Ome
• “Radicle: Setup and Introduction” by Lorenz Leutgeb
• “Occlumask Demo & Brainstorming Session” by Jeremy Rand, Alice Margatroid
• “Natürlich bin ich 18! - Wo stehen wir beim Thema Altersprüfungen im Netz?” by asypsilon (sie/ihr)
• “Selbstgemachtes Leid: Die KinkyGeeks-Bastelwerkstatt” by raven (she/her)
• “DIY: Biothane-Handfesseln” by raven (she/her)
• “Transdermal HRT Brewing for Beginners” by Lizzz (they / she)
• “From Rave to Rubble - De-Elitise Crisis Response”
• “Treffen der Bahn-Chaosbubble” by darkfrone (he/him)
• “How even the safest places aren't safe from CCTVs” by Francisco
• “SocksTrace: Preventing Proxy Leaks in Your Applications” by Robert Mindo
• “Glasfaser-Spleißworkshop (Junghacker:innentag-Edition)” by Patrick
• “be-BOP: Ethical Commerce, Without the Middlemen” by Roos
• “GNU Boot install party” by neox, GNUtoo
• “Key-Signing Party” by ulif
• “Selbstgemachtes Leid: Die KinkyGeeks-Bastelwerkstatt II” by raven (she/her)
• “P4P Meet & Greet” by Mathias, zelf, Mathias Jud
• “A hands-on guide for people who want to install and use Sockstrace.” by Robert Mindo
• “C3GELB: Hygieneschulung nach § 43 IfSG ("Frikadellendiplom")” by m4rtin
• “Wetten, dass.. du das nicht im Schutzanzug schaffst?”

We had to move some sessions, so if you were planning on seeing them, check their new dates or locations:

• “Programming with the TROPIC01 open architecture secure element” by Pavel Polach (Dec. 28, 2025, 10:30 a.m., CDC Triangle → Dec. 28, 2025, 11 a.m., CDC Circle)
• “Fedi in/for in (EU) Public Admin. Yet another story.” by ZZEPPOSS (CPT.) (Dec. 29, 2025, 11:59 p.m. → Dec. 27, 2025, 8 p.m.)
• “Luanti(Minetest)-Mods programmieren” by kenorca, darius, Natureshadow (Dec. 27, 2025, 2 p.m. → Dec. 27, 2025, 3:30 p.m.)
• “Lateshift POTA - Parks on the Air” by DK4HAA (Dec. 29, 2025, 3 p.m. → Dec. 28, 2025, 4:30 p.m.)
• “Getting started with the Pocket Science Lab” by Alexander Bessman (Dec. 27, 2025, 2:30 p.m. → Dec. 29, 2025, 10:30 a.m.)
• “"Referendum Citoyen" the revolutionnary app” by Alexis Roussel (Dec. 30, 2025, 1 p.m. → Dec. 28, 2025, 9 p.m.)
• “GuteN8Geschichte "Das NEINhorn" - Tag 1” (Dec. 27, 2025, 7:15 p.m. → Dec. 27, 2025, 8 p.m.)
• “The Mask-Off Moment for Digital Identity” by Cade Diehm (Dec. 27, 2025, 6 p.m. → Dec. 27, 2025, 6:30 p.m.)
• “FLINTA POTA Party - Parks on the Air” by DK4HAA (Dec. 28, 2025, 3 p.m. → Dec. 29, 2025, 3 p.m.)
• “Prepping-Supply richtig kaufen” (Dec. 29, 2025, 10 a.m. → Dec. 29, 2025, noon)

Version 1.1 2025-12-26 17:34 Dec. 26, 2025

We have new sessions!

• “Nudeln Hacken / Hacking Noodles” by ghenny
• “Gesprächsrunde zum Umgang linksradikaler und anarchistischer Kontexte mit "Social Media"” by Luna
• “Finona Rider” by Finona Rider
• “House of Tea Reunion” by AdeptVeritatis
• “Shift allocation for Video Mixer Angels (Day 1)”
• “g00d news” by g00d news
• “Cracking open what makes Apple's Low-Latency WiFi so fast” by Henri Jäger
• “Erste Hilfe”
• “Papierbasteln Tag 2” by Cisz (er, he)
• “Surface Mount Electronics Assembly for Terrified Beginners (Day 3)” by Mitch (he/him)
• “Reverse engineering the Pixel TitanM2 firmware” by willem
• “Neurodivergenz-Meetup” by Deanna (keins/none-they/them)
• “Introduction to Embedded Rust for intermediate to advanced participants (for Hakkaa-Board workshop)” by sirhcel
• “🙈 🙉 🙊 Nerd Game Show 😸 😹 😻” by Birdy1976
• “Häkeln für Anfänger” by elzbeth
• “Climatepoetry.org” by Magnus Ahltorp, Maria Skeppstedt
• “Meshtastic for Flipper Zero” by Mitch (he/him), skickar
• “Einführung Löthelfer*innen” by Henning Brinkmann
• “1965 + 60 Years of Algorithmic Art with Computers” by Enna Gerhard, Frieder Nake
• “Den solidarischen Gutscheintausch mit Unterstützung der App Couponexpress organisieren” by neinzurbezahlkarte
• “Design for 3D-Printing” by Rahix
• “GuteN8Geschichte "Das NEINhorn und der Geburtstag" - Tag 3” by ghenny
• “Meet the Funders: Sovereign Tech Agency, NLnet, Prototype Fund” by shiro
• “Search Engine Creators Meetup” by slatian (they/them)
• “Opening Ceremony” by pajowu, Stella
• “Erkundung linker Utopien mit der Bravo der Antifa” by Sassi
• “Noob-Meetup” by Luna
• “Solder your very own IoT Pusheen Cat Lamp with WLED! (Day 3)” by Mitch (he/him), brandonpaiz, Hoid (he/him)
• “Nicht schon wieder Vorratsdatenspeicherung!” by pneutig, tyncet, e-punc (der / he)
• “Friedensliteratur und Antikriegsaktivismus - "Die Waffen nieder" (1889)", "Im Westen nichts Neues (1929)", "Runaround (1942)" & HEUTE?” by Tomate_aka_Radikale_Liebe
• “Azubi-Tag Einführung”
• “Promptbastelei und andere Überlebensstrategien” by Marlene Kulla, Ann Katzinski
• “Auf die Dauer hilft nur Power: Herausforderungen für dezentrale Netzwerke aus Sicht der Soziologie” by Marco Wähner
• “NeinZurBezahlkarte Summit” by neinzurbezahlkarte
• “Intro to the Critical Decentralization Cluster” by Diego Salazar
• “VVVVVAI & Steffen Bennemann” by VVVVVAI & Steffen Bennemann
• “Löte deinen eigenen Euclidean Sequencer” by carinalntz
• “Elektrobausteine - Tag 4”
• “Software Liberation Toolbox Exchange” by Zebra
• “Linux für Einsteiger:innen (Part 1)” by Sylvia, micu
• “speedrun: hacking medical research in under 4.5 minutes” by ShadowCone (she/her)
• “Einführung in Scratch”
• “Tatendrang.wav” by Adnan
• “Peep-Show für die Polizei. Staatliche Überwachung von Queers in Hamburger Toiletten bis 1980” by Simon Schultz
• “Afidissima & Alice” by Afidissima & Alice
• “BitUnlocker: Leveraging Windows Recovery to Extract BitLocker Secrets” by Alon Leviev
• “Weebz” by Weebz
• “Prepping-Supply richtig kaufen”
• “Search Engines for the Curious” by Slatian
• “c’t uplink: Digitale Souveränität – sind Häcker:innen jetzt fürs Staatswohl verantwortlich?” by Keywan Tonekaboni | c’t uplink
• “Betontes Schonen” by Jeanette
• “self-organized infrastructure meetup”
• “Pixelprint:ing with bricks” by tabse
• “Komona we can make it work - Plenary”
• “Pub-Quiz für "Nicht-Nerds" [all creatures welcome]” by pascoda, lavalaempchen
• “Bits & Bäume Community Meetup” by benks
• “Variable Fonts — It Was Never About File Size” by Bernd
• “Zellkultur” by Adora Belle
• “Einführung in den Online-Editor iD” by Nakaner
• “POTA - Parks on the Air [DAY 3]” by DK4HAA
• “Einführung in Waldbesetzungen – Vorstellung der Waldbesetzung im Altdorfer Wald” by Samuel_77
• “Open Lab - "Doing strange things with electricity"”
• “Meshcore & Meshtastic for Beginners” by Mitch (he/him), skickar
• “Solder your very own IoT Pusheen Cat Lamp with WLED! (Day 4)” by Mitch (he/him), Hoid (he/him)
• “Komona teardown meeting”
• “DNGerousLINK: A Deep Dive into WhatsApp 0-Click Exploits on iOS and Samsung Devices” by Zhongrui Li, Yizhe Zhuang, Kira Chen
• “Building a NOC from scratch” by lilly, Scientress
• “Traditionelles Haecksen-Picknick”
• “AI Agent, AI Spy” by Udbhav Tiwari, Meredith Whittaker
• “Rob StrobE” by Rob StrobE
• “Endlich maschinenlesbare Urteile! Open access für Juristen” by Beata Hubrig, Nuri Khadem-Al-Charieh
• “Heaven Meeting - Day 2”
• “Teilchendetektor im Keller? Ich hab's gemacht! Die Theorie und der Bau einer Funkenkammer” by roso
• “Embedding Anonymity Directly in your Application” by idk
• “Filmvorführung "Von Menschen, die auf Bäume steigen"” by Samuel_77
• “Skynet Starter Kit: From Embodied AI Jailbreak to Remote Takeover of Humanoid Robots” by Shipei Qu, Zikai Xu, Xuangan Xiao
• “Legale, Halblegale und andere Tricks um ohne Geld durch die Welt zu kommen” by AnnaKia
• “39C3 LED badge -- SMD for Beginners (Day 3)” by Mitch (he/him), the0 (he his him)
• “A Quick Stop at the HostileShop” by Mike Perry
• “Escaping Containment: A Security Analysis of FreeBSD Jails” by ilja, Michael Smith
• “Steuerkarten für Freunde (post-punk, experimental, spoken word)” by Steuerkarten für Freunde
• “Digitale Infrastruktur für Videos und Podcasts: WissKomm Wiki Talk, Q&A” by TimBorgNetzWerk
• “Vegan Chaos: Welcome Meet & Greet” by ganzesaetze (he/him), phil_vcc (he/him)
• “🙊 Introduction to International Sign at 39C3 🙉” by seejayer (🙊🙉 📵 7880), Snoopy3109
• “Shitty Robot Workshop (until 8 a.m.)” by Neo
• “What Makes Bike-Sharing Work? Insights from 43 Million Kilometers of European Cycling Data” by Martin Lellep, Georg Balke, FelixW, Felix Waldner
• “Seile takeln für Anfänger” by kluthulhu
• “Cables of Resistance -- Soziale Bewegungen kämpfen global gegen Big Tech (Konferenz 2026)” by Rike
• “What’s Next with Open Hardware at FOSSASIA and Beyond” by Mario Behling
• “Vegan Chaos: Let's Talk (Day 1)” by ganzesaetze (he/him)
• “A Decentralized Social Layer for the Web - Meeting People on All Pages” by Wolfspelz
• “Punkrock-Songtext-Lesung” by tomate, anna
• “Lingo Coordination Day 1”
• “FLINTA-Singstar [FLINTA* only]” by Drakulix
• “Deutsche Gebärdensprache (DGS)”
• “Om-Resonanz: Dein 15-Minuten-Power-Cycle (Atem-Hack für den C3-Reset)” by kurisu
• “Digital Humanities auf dem 39C3 @ Sendezentrum” by Torsten Roeder, Ulrike Wuttke
• “Babooshka” by Babooshka
• “Security Nightmares” by Constanze Kurz, Ron
• “Digital Rights Communities Meetup” by Freedom Not Fear
• “ΠXL: Noisy Improvised Concert on Analog&Digital Modular Synths (live)” by Marty
• “The Last of Us - Fighting the EU Surveillance Law Apocalypse” by Svea Windwehr, Chloé Berthélémy
• “Breaking architecture barriers: Running x86 games and apps on ARM” by neobrain, Tony Wasserka
• “Pixelprint:ing with bricks” by tabse
• “3. Congress Skatturnier auf dem 39c3 - 1. Serie” by segal
• “Wie man mit offenen Geodaten und Wikidata Natur- und Kulturerbe dokumentiert” by GPSLeo
• “Wir zerlegen einen Plasterouter”
• “Linux für Einsteiger:innen (Part 2)” by Sylvia, micu
• “Mittagspausenpunk live” by Einschiss
• “Federating knowledge: exploring ways to bridge wikis and notes” by Tommi
• “A Tale of Two Leaks: How Hackers Breached the Great Firewall of China” by Jade Sheffey
• “Power Play Cycles: Rewriting the Rules of Economic Simulation” by doczx, Mikroprofessor
• “Geschichten Erzählen Tag 4 - Im Orbit (Science Fiction)” by Cisz (er, he)
• “Omnibus vs. Digitalrechte” by tyncet, e-punc (der / he)
• “Packet Analysis for Beginners for FLINTA - an IoT toy, some packets, and Wireshark” by Katalyst
• “Alwin/CircuitCircle Squeaking Rat & LDerroR”
• “Introduction to FNF” by Freedom Not Fear
• “Battling Obsolescence – Keeping an 80s laser tag system alive” by Trikkitt
• “How To Minimize Bugs in Cryptography Code” by Jade
• “We, the EU, and 1064 Danes decided to look into YouTube: A story about how the EU gave us a law, 1064 Danes gave us their YouTube histories, and reality gave us a headache” by David, LK Seiling
• “Einsatzgepäck & Alltagskram – ein gemeinsamer Taschencheck”
• “Media needing categories: Wir räumen auf!” by GPSLeo
• “Geschichten Erzählen Tag 1 - Waldwesen (Grusel und Geheimnis)” by Cisz (er, he)
• “FAQ Panel 2.0: Your Notes, Our Conversation: Unpacking Your Questions about Ethical Non-Monogamy” by zenme
• “Funksender finden mit gehackten Funkgeräten” by DK4HAA
• “CANCELLED! Surface Mount Electronics Assembly for Terrified Beginners (Day 2)”
• “What's happening with XSLT?” by Juri —〇 Leino
• “Elektronische Patientenakte (ePA) - 13 Fragen, ob die ePA eine gute Idee ist” by Stefan_Streit
• “ccchoir rehearsal 2” by thiesmynther
• “nach der Revolte. Ein Reisebericht zu Überwachung und Widerstand in Hongkong” by penny
• “Hour of Code - Programmieren mit Minecraft und Code.org” by ghenny
• “Von Fuzzern zu Agenten: Entwicklung eines Cyber Reasoning Systems für die AIxCC” by Mischa Meier (mmisc), Annika Kuntze
• “Teckids – eine verstehbare (digitale) Welt” by Keno, Darius Auding
• “Who cares about the Baltic Jammer? – Terrestrial Navigation in the Baltic Sea Region” by Markus, Lars, Niklas Hehenkamp
• “Bingo” by Merle, Kara
• “Verschlüsselung brechen durch physischen Zugriff - Smartphone Beschlagnahme durch Polizei” by Viktor Schlüter, Davy Wang
• “Closing Ceremony” by pajowu, Stella
• “Soldering Competition - Day 1”
• “Luanti(Minetest)-Mods programmieren” by kenorca, darius, Natureshadow
• “Zero-Knowledge Proofs Workshop” by Freeman Slaughter
• “Minecraft Education – Erfahrung, Praktische Einblicke & Austausch” by ghenny
• “Numerical Weather Prediction” by Raziel, tecer
• “Carry you carry me / Leute Tragen”
• “WASH-Sprechstunde” by Anna-Lea
• “Nextcloud Collectives Community Meetup”
• “Hackspace Entwicklung einer App für die Dezentralisierung von Gutscheintauschangeboten” by neinzurbezahlkarte
• “Von Groschen und SpurLos - GNU Taler auch auf eurem Event!” by Mikolai Gütschow, signum
• “Haecksen Power (Cycle) – Dezentralisieren und Rebooten [Haecksen only]” by naerrin, captain-maramo
• “Bau dir einen Kritzelbecher” by arp (HE / HIM)
• “Aktuelle Proteste gegen Verschärfungen von Polizeigesetzen – Austausch, Analyse & Vernetzung”
• “We show Quadball🏐🤾🏿‍♀️🏳️‍⚧️: brooms, a snitch, six hoop-goals and lots of gender diversity and fun” by jendrik (any), saxnot (he/him)
• “TicTacLights Nano Colour -- reflow soldering” by Arne
• “Advocacy for the Social Web” by samvie
• “Chatkontrolle STOPPEN!” by khaleesi (she/her), pneutig
• “Shift allocation for Video Mixer Angels (Day 2)”
• “A Primer on LLM Security and Secure LLMOps” by IngoKleiber (er/sein)
• “The Eyes of Photon Science: Imaging, Simulation and the Quest to Make the Invisible Visible” by MarKuster
• “Tinabel vs Nintendo DS - Chiptune punk and new-wave from Tina Belmont, using Rhythm Core Alpha 2 on Nintendo DSi and 3DS” by Tinabel
• “Inclusive Yoga Practice: (Body) Diversity by default [all creatures welcome]” by Jamie
• “Community data centers - a workshop” by Rainer Rehak, Nicolas, Tara Merk
• “OpenWrt Meetup” by skorpy (she/her), Hauke
• “Syncing visuals and stage lights against the beat of live music: an introduction” by Luca Di Bartolomeo (cyanpencil)
• “Cybersecurity Märchen XXL – Neues und Altes aus Nerdistan” by mitBen (He,him,he-man)
• “Netzpolitik in der Schweiz: Zwischen Bodensee und Matterhorn” by Kire, Rahel
• “FeMENism?!” by philis
• “"They Talk Tech" live mit Anne Roth” by Eva Wolfangel
• “Ethical non-monogamy is not only for millenials” by so-ka (he / him)
• “Operating System Developers (OSdev) Meetup (time/location may change!)” by offlinemark
• “Freifunk und Gluon Meetup” by skorpy
• “Haecksen-Picknick für neue Haecksen” by Deanna (keins/none-they/them)
• “Für ein europäisches Grundrecht auf Verschlüsselung” by Kai Bojens
• “CCCrip Auskotzrunde [all creatures welcome]” by pascoda, lavalaempchen
• “Der feine Schliv” by Der feine Schliv
• “Emanzipatorische Antworten auf digitalen Autoritarismus, Überwachungskapitalismus und globalen Rechtsruck?” by larsbretthauer
• “Project Poltergeist” by Alexeyan
• “Wählt diesen Workshop! Ein interaktiver Streifzug durch verschiedene Wahlverfahren [all creatures welcome]” by Piko, blinry
• “Austausch für Eltern von ADHS-Kindern”
• “Jurist:innentreffen” by Dickmaulrussler
• “Geschichten Erzählen Tag 3 - Zauberschule: Schatzjagd” by Cisz (er, he)
• “Lessons from Building an Open-Architecture Secure Element” by Jan Pleskac
• “Power Cycle B7 oder Warum kauft man eine Zeche?” by Stephan, Kohlenpod, kater
• “Gegenhalten vor Ort: FLINTAs als Kommunalpolitikerinnen im (ostdeutsch) ländlichen Patriarchat [FLINTA* only]” by Cathleen Hoffmann
• “Pony Pracht, Nina Bendix Igleses: »Water to Voice« (meet the artist)” by Marty
• “Astrology as System of thought for Daily Routines (No Fate, No Woo)” by katy13
• “Löte dein 39C3 PCB”
• “Open source hearing technology” by A73X, drquaithe
• “FediDay 2026 Rückblicke und Ausblicke / FediDay 2026 Reviews and outlooks” by samvie, e-punc (der / he), poo, vgrass
• “Digital Humanities Meetup” by Torsten Roeder, Ulrike Wuttke
• “​WissPod Jahresrückblick 2025 oder: KI in der Wissenschaft!?” by Bernd Rupp, Melanie Bartos
• “KIM 1.5: Noch mehr Kaos In der Medizinischen Telematikinfrastruktur (TI)” by Christoph Saatjohann
• “Awful interception: misadventures of the russian surveillance machinery” by Xeniax
• “Lateshift POTA - Parks on the Air” by DK4HAA
• “GPTDash – Der Reverse-Turing-Test” by Benny, Kilian, BratscherBen, KI-lian
• “Hack Your Brain Part 1” by Johannes_Max
• “Reden über Radfahren - deutschsprachige Fahrradpodcasts” by Regines Radsalon, Diana
• “Post-Platform Digital Publishing” by tabse
• “Von wegen Eisblumen! Wie man mit Code, Satelliten und Schiffsexpeditionen die bunte Welt des arktischen Phytoplanktons sichtbar macht” by Moritz Zeising (er/he)
• “Kherson. LGBTQ+ under occupation.”
• “Ada und Zangemann”
• “Human microservices at the Dutch Railways: modern architecture, ancient hardware?” by Maarten W
• “Felix Kubin” by Felix Kubin
• “The Mask-Off Moment for Digital Identity” by Cade Diehm
• “AAA - Ask Advi Anything” by Thomas Brandt
• “Post für das Nebelhörnchen” by Pascal4F
• “Festnacht” by Festnacht
• “The Uncontrolled Manifold : dancing with sympoetic machines” by Christian Faubel
• “Code to Craft: Procedural Generation for the Physical World” by bleeptrack
• “Trikkitt: PolyGen Hands on” by Marty
• “OpenStreetMap Meetup” by Marc
• “Ask me anything: Internet Governance” by Sophia Longwe, Ben Burmeister, Friederike von Franqué
• “The State of LEO - Satellite enthusiast meetup” by beeblebroxx
• “Post-Platform Digital Publishing” by tabse
• “Brennende Wälder und Kommentarspalten - Klimaupdate mit dem FragDenStaat Climate Helpdesk” by Joschi Wolf
• “freiheit.exe - Utopien als Malware” by Christiane Mudra
• “Tippeln am Rande des Abgrunds” by tippel radio
• “Scrapergeist - Zeitungsgedichte in retro und visionär” by tabse
• “Machine Vision – Vom Algorithmus zum Baumpilz im digitalen Metabolismus” by Thomas Knüsel
• “Wie funktioniert das IT-Netzwerk Zuhause? Netzwerk Basics [all creatures welcome]” by Bücherratten
• “BarbNerdy” by BarbNerdy
• “Privacy Ultras Meetup” by jomo
• “CCC-Jahresrückblick” by khaleesi, Linus Neumann, Constanze Kurz, Matthias Marx, erdgeist
• “Dj Sloush + Zarrt” by Dj Sloush aka Spitz + Zarrt
• “Security for small engineering teams” by max1
• “Fairphone Meetup (all creatures welcome)” by Dia, Dia (she/her), t_aus_m (they/them, er/ihm), mde (he/him)
• “Bingo” by Merle, Kara
• “Alternative Nutzungsweisen von Microblogging” by sozialwelten (er/ihn)
• “Soldering Competition - Day 2”
• “Sorten züchten für Dummies” by Coco
• “PRÜF” by Nico Semsrott
• “GuteN8Geschichte "Das NEINhorn und die Schlangeweile" - Tag 2” by ghenny
• “Ask me anything: Internet Governance” by Sophia Longwe, Ben Burmeister, Friederike von Franqué
• “BE Modded: Exploring and hacking the Vital Bracelet ecosystem” by cyanic
• “a media-almost-archaeology on data that is too dirty for "AI"” by jiawen uffline
• “Wikidata und Kolonialismus in Daten” by Cin Pietschmann, Lukas Fuchsgruber
• “Build a Fake Phone, Find Real Bugs: Qualcomm GPU Emulation and Fuzzing with LibAFL QEMU” by Romain Malmain, Scott Bauer
• “A post-American, enshittification-resistant internet” by Cory Doctorow
• “The Museum of Care: Open-Source Survival Kit Collection” by Nika Dubrovsky
• “Teamtype – multiplayer mode for your text editor!” by blinry
• “FIfF Meetup” by Gilbert, benks, keldo
• “Hitstorm aka The Jakob Sister b2b RaverPik” by RaverPik
• “Surface Mount Electronics Assembly for Terrified Beginners (Day 4)” by Mitch (he/him)
• “A blast from the Y2K past… GRÜNSPAN (Rock & Metal)” by Alex Thurow
• “Akronymisierbar - 061” by Kilian, Hendrik, KI-lian
• “cozy crafting session” by Lorva (keine/no pronouns)
• “Jascha Hagen” by Jascha Hagen
• “Wiki Loves Demokratie” by Holger Plickert (WMDE)
• “Build Your Own Air Quality Sensor” by tdr112 (he/him)
• “Live, Die, Repeat: The fight against data retention and boundless access to data” by Klaus Landefeld
• “39C3 LED badge -- SMD for Beginners (Day 1)” by Mitch (he/him), the0 (he his him)
• “Wald statt Repression - Die Kreativität von Staat und Kapital” by WSR
• “Let's Talk about Psychedelics, Honey!” by Indivisual
• “Bildungsurlaub 2.0: Bürokratie hacken” by Dante
• “Pixelprint:ing with bricks” by tabse
• “Share Your Citizen Science: Projects, Pets, and Paths for Collaboration ( Is This Citizen Science — and Do You Want Anything from ECSA?)” by katy13
• “A Visit to the Catacombs of Dammtor” by rhandos (she/her)
• “Wir gründen eine Chaos-WG als solidarisches, selbstverwaltetes Wohnprojekt in Schleswig-Holstein/Hamburg.” by yellni
• “Kein Palantir BW” by NaN (he/him), Dam0k1es, Leibi
• “Scrapergeist - Zeitungsgedichte in retro und visionär” by Martha
• “Spieleprogrammieren mit PyGame” by kenorca, darius, Natureshadow
• “And so it begins - Wie unser Rechtsstaat auf dem Highway Richtung Trumpismus rast – und warum afghanische Kläger*innen für uns die Notbremse ziehen” by Eva, Elaha
• “Gepflegtes Grölen am Späti: Antifa-Jodler, Punkrock und Umverteilungs-Hits” by Elenos
• “Steve Simon” by Steve
• “How to render cloud FPGAs useless” by Dirk
• “Bau dir einen Kritzelbecher” by ghenny, arp (HE / HIM)
• “Vegan Chaos: Bring-Along Fingerfood Brunch” by ganzesaetze (he/him), phil_vcc (he/him)
• “Prometheus: Reverse-Engineering Overwatch” by breakingbread
• “Minecraft Education Beginner Workshop (6+)” by ghenny
• “Zwischen Assistenz und KI-(Selbst)-Kontrolle: Generative KI im Berufsfeld Softwareentwicklung” by Marlene Kulla, Ann Katzinski
• “Mushroomclub” by Thistle
• “Programming with the TROPIC01 open architecture secure element” by Pavel Polach
• “Who runs the www? WSIS+20 and the future of Internet governance” by Sophia Longwe
• “Renewable Power Cycles - Patching Democracy” by htext
• “Power Cycles statt Burnout – Wie Einflussnahme nicht verpufft” by Rahel Becker, Anna Kassautzki
• “Was ist Awareness? Was macht c3awareness? ❤️‍🩹 What is awareness? What does c3awareness do?” by fuchsi, Keks
• “Realismus beim SF Weltenbau: Was wir aus der Geschichte über die SF-Zukunft lernen können” by Wolfspelz
• “Probiotic drinks making @ FHB” by algoldor
• “Aylin Leclaire: Electronic live performance (live)” by Marty
• “Yazz Ewok DJ Set” by Yazz Ewok
• “Sozialrecht hacken - Hartzen für Fortgeschrittene” by Luna
• “tech from below” by VonBelow, leohnever
• “Excuse me, what precise time is It?” by Oliver Ettlin
• “C Code Testing. Let's talk about it!” by Loidi
• “Chaos all year round” by Deanna
• “Austausch Mental Health und Suizidprävention im Chaos / Meetup Mental Health and Suicide Prevention in Chaos” by sjaelv (she/they)
• “Amateurfunk goes Politik – oder wie ich das Overengineering lernte” by Tny
• “Digitale Infrastruktur für Videos und Podcasts: WissKomm Wiki Workshop” by TimBorgNetzWerk
• “Light in the Dark(net)” by Tobias Höller
• “Throwing your rights under the Omnibus - how the EU's reform agenda threatens to erase a decade of digital rights” by Thomas Lohninger, Ralf Bendrath
• “Current Drone Wars” by Leonard
• “What the Guix!?” by NaN (he/him)
• “Hegemony Eroding: Excavating Diversity in Latent Space” by Karim Hamdi
• “Spontaneous Space (Live)” by Unnamed user, Marta
• “YMNA” by Nina_art&play
• “Meshcore & Meshtastic for Hackers: Set up, Configure, & Deploy Nodes for Advanced Use (Day 2)” by Mitch (he/him), skickar, koufax
• “Schlingelkind pres. Deep, Dark and Organic Techno with MilkDrop visuals”
• “Queer*IT Gathering 🌈” by lambdaqueer
• “Plushie(-verse) Meetup” by NcamGnrvngu (they/them)
• “Werde Teil der Endof10 -Kampagne! Hilf Menschen beim Umstieg auf Linux [FLINTA* only]” by belobe, Bettina Louis
• “Suing spyware in Europe: news from the front!” by Lori Roussey, Celia/Irídia
• “Handy weg bis zur Ausreise – Wie Cellebrite ins Ausländeramt kam” by Chris Köver
• “AI-generated content in Wikipedia - a tale of caution” by Mathias Schindler
• “Gewaltfreie Kommunikation” by Johannes_Max
• “Mutual Vend - decentralized coop vending machine” by Ron Turetzky
• “social work get together” by spark (keine)
• “How to setup a chatmail relay server, optimized for Delta Chat” by Nami (they/them)
• “Supplements und Social Media – wenn der Online-Hype zur realen Gesundheitsgefahr wird” by Christoph Wiedmer
• “Elektrobausteine - Tag 3”
• “Coffeebots cornern @ Congress” by e-punc
• “Die Sicherheits_lücke live vom 39c3: die Wissenschaft zu Gast” by Volker
• “Learning from South Korean Telco Breaches” by Shinjo "peremen" Park, Yonghyu "perillamint" Ban
• “Die Sicherheits_lücke live vom 39c3: Recap” by Volker
• “Empower your non-tech community!” by tabse
• “How to keep Open Source open without leaving our communities open to threats” by Quintessence
• “[3-in-1] Crafting-Workshop: Häkeln, Sticken und Stricken für Anfänger:innen [all creatures welcome]” by Sarah, rhandos, anma
• “Digital Humanities Meetup” by Torsten Roeder, Ulrike Wuttke
• “Wante (DJ Set)” by Wante
• “I Hated All The Cross-Stitch Software So I Made My Own: My Deranged Outsider Software Suite For Making Deranged Outsider Art” by yomimono
• “Gwen Wayne” by Unnamed user
• “Celestial navigation with very little math” by Trammell Hudson
• “How to thrive in chaos, Part II” by sarah31415
• “Signal Angel Introduction”
• “Haecksen-Picknick für neue Haecksen”
• “Trump government demands access to European police databases and biometrics” by Matthias Monroy
• “Workshop Network-Security + "Darknet" [FLINTA* only]” by Clandestine
• “„KI“, Digitalisierung und Longevity als Fix für ein kaputtes Gesundheitssystem?” by Manuel Hofmann
• “Vereinskrams bei den Haecksen [all creatures welcome]” by melzai
• “Antifa will win!” by Daniel, Paul
• “Amtsgeheimnis raus, Datenhalde rein: was die Informationsfreiheit in Österreich bringt” by Markus (fin) Hametner, Erwin Ernst "eest9" Steinhammer
• “Learn to Solder with the "I Can Solder" Badge kit”
• “Awareness Kids - Formiert euch!”
• “The art of text (rendering)” by Nicolas Rougier
• “"We are the Battlefields" (Film: Mathieu Rigouste/2024) - Das Globale Geschäft mit Krieg und Kontrolle / Genre: Dokumentation / Reportage”
• “Fight, Flight, Freeze - und dann? Handlungsfähig bleiben mit Psychologischer Erster Hilfe. Ein Crashkurs” by Anna-Lea
• “Catware Python Sensor Playground” by Mitch (he/him)
• “Max8min (Kurzfilm / Short Film) 🍿” by Birdy1976
• “Debug your Body – Spaß am Ultraschallgerät for Kids!”
• “Calliope mini”
• “101 - KinkyGeeks + RopeLabs Beginner Bondage Workshop Part I” by Pez, Pez (he/they)
• “Developing New Medicines in the Age of AI and Personalized Medicine” by Dennis Özcelik
• “Wie können wir durch gute Kommunikation über unsere Spielvorlieben mehr Spaß an Pen&Paper-Rollenspiel haben” by Luna
• “Neuroexploitation by Design: Wie Algorithmen in Glücksspielprodukten sich Wirkweisen des Reinforcement Learning und dopaminergen Belohnungssystems zunutze machen” by Elke Smith
• “Infrastruktur für Aktivistis” by w1ntermute
• “The Spectrum - Hackspace Beyond Hacking” by MultisampledNight, sjaelv
• “Sportbrigade Sparwasser” by Hüp Now
• “Pwn2Roll: Who Needs a 595€ Remote When You Have wheelchair.py?” by elfy
• “Electronic Instruments Jam Session (read description!)”
• “Papierbasteln Tag 3” by Cisz (er, he)
• “"Referendum Citoyen" the revolutionnary app” by Alexis Roussel
• “Datenschutzrechte zum Mitmachen – DSGVO-Anfragen stellen mit Datenanfragen.de” by Lorenz, Benni
• “Q&A - Device Neutrality, Free Software and FSFE's litigation against Apple” by Dario Presutti
• “Vernetzungstreffen ÖRR” by Benny
• “Geschichten Erzählen Tag 2 - Zauberschule: Ethikexkursion” by Cisz (er, he)
• “MASCHA” by Mascha
• “Race conditions, transactions and free parking” by Benjamin W. Broersma
• “More privacy for android smartphones” by flysch
• “"Passwort" - der heise security Podcast live vom 39C3” by Christopher Kunz, Sylvester
• “Power Zeichnen – Machtdynamiken sichtbar machen (Workshop)” by Marty
• “OpenStreetMap Software Development – Ask us anything!” by Nakaner
• “Podcasting für Einsteiger*innen” by Bernd
• “Daily Tech Talk: CADUS Academy – Building an Open Learning Platform”
• “39C3 LED badge -- SMD for Beginners (Day 2)” by Mitch (he/him), the0 (he his him)
• “Trickmisch” by Julis
• “Wie können wir durch gute Kommunikation über unsere Spielvorlieben mehr Spaß an Pen&Paper-Rollenspiel haben” by Luna
• “Update 2025. Digital integrity of the human person, A new fundamental right.” by Alexis Roussel
• “Binärgewitter Talk” by Ingo Ebel
• “When 8 Bits is Overkill: Making Blinkenlights with a 1-bit CPU” by girst (Tobi)
• “Lila-Zoé Krauß” by Lila-Zoé Krauß
• “Wikidata Introduction” by Lucas Werkmeister
• “Persist, resist, stitch” by Philo
• “Transkultureller Hack auf die klassische Musikszene – Vortrag und Konzert” by Johanna-Leonore Dahlhoff, Neina Doroshenko, Peter Klohmann, Alireza Meghrazi Solouklou, Mirweis Neda, Maria Carolina Pardo Reyes, Eduardo Sabella, Sarah Luisa Wurmer, Berivan Canbolat
• “Sbor medžuslovjanskogo jezyka” by doofus
• “KI.VooDoo - extracting future sealife with genAI” by tabse
• “Go - Das uralte Brettspiel”
• “Einführung SPARQL + Wikidata Query Service” by Lucas Werkmeister, Andrew McAllister
• “Fedi in/for in (EU) Public Admin. Yet another story.” by ZZEPPOSS (CPT.)
• “Vectoralism - The economic system of the 21st Century (or: Why is our tech going to shit & what can hackers and organizers do about it?)”
• “ARKIFEL + nanoloop” by ARKIFEL
• “Imagining Emergent Network Structures” by willscott
• “Safety First, Innovation Last? Überleben als Embedded-Entickler” by kurisu
• “IoT with Arduino Cloud: Beginner-Friendly Workshop” by tdr112 (he/him)
• “Arduino For Total Newbies workshop”
• “🙊 Oral Languages Are Watched, Sign Languages Are Free 🙉” by seejayer (🙊🙉 📵 7880), Snoopy3109
• “The Spoon Game - 39C3 Special Edition workshop (#1)” by Atypha (She)
• “Nixe” by Nixe
• “Is That an Off-Grid Server in Your Pocket, or Are You Just Happy to See Me?” by Mitch (he/him), brandonpaiz, koufax
• “Agentic ProbLLMs: Exploiting AI Computer-Use and Coding Agents” by Johann Rehberger
• “Hello Qubitty! Your First Steps on a Quantum Computer” by greenygreenfarmer
• “Loui Beton” by Loui Beton
• “Atoms in Space” by Manuel
• “Podcast Radiomegahertz – MHz rein | kHz raus | Ultraschall.fm mittendrin” by Tim Mäcken | Radiomegahertz
• “Perspektiven auf Männlichkeit - Eine Einladung zur gemeinsamen Betrachtung” by mation155 (she/her), quin (they/them)
• “Bügelperlen ... aber anders” by elzbeth
• “Greenhouse Gas Emission Data: Public, difficult to access, and not always correct” by Hanno Böck
• “Einsatzgepäck & Alltagskram – ein gemeinsamer Taschencheck”
• “When Vibe Scammers Met Vibe Hackers: Pwning PhaaS with Their Own Weapons” by Chiao-Lin Yu (Steven Meow)
• “Cloud Management” by Cloud Management
• “Hack Your Brain Part 2” by Johannes_Max
• “Not an Impasse: Child Safety, Privacy, and Healing Together” by Kate Sim
• “C3RP - 39C3 Roleplaying Night (because 160min is not enough)” by koehr
• “39C3 LED badge -- SMD for Beginners (Day 4)” by Mitch (he/him), the0 (he his him)
• “Was hat das Fediverse eigentlich zu bieten wenn Datenschutz und Digitale Souveränität egal sind?” by bAvatar
• “The Angry Path to Zen: AMD Zen Microcode Tools and Insights” by Benjamin Kollenda
• “Angie Taylor” by Angie Taylor
• “Music Generation for Newbies / Learn to Solder workshop -- ArduTouch music synthesizer”
• “FSFE meetup at Bits & Bäume Habitat” by bonnie
• “selbstverständlich antifaschistisch! Aktuelle Informationen zu den Verfahren im Budapest-Komplex - von family & friends Hamburg” by Andreas family & friends Hamburg, Birgit family & friends Hamburg
• “APT Down and the mystery of the burning data centers” by Christopher Kunz, Sylvester
• “Vegan Chaos: Farewell Meeting” by ganzesaetze (he/him), phil_vcc (he/him)
• “Relation Anarchy and Solo-Poly meet-up.” by catileptic (they/she)
• “Nerds spielen Spiele - Tag 4” by monsterchen
• “Build your own mouse cursor theme (for Linux)!” by blinry
• “Light and Sound Badge-Making (choice of 2 kits)” by Mitch (he/him), graham42
• “Blonkenclick, the ESP32 16 segment RGB blinken clock” by mazzoo
• “The Maybe Talent Show” by Norman Müller-Schmitz, lukas-schmukas, James Bonne d'age
• “Hacking Karlsruhe - 10 years later” by Simone Ruf, Jürgen Bering
• “Bastle ein Haecksen-Licht [kids friendly] [junghackerinnentag] [all creatures welcome]” by quima
• “Riot Pub Quiz [all creatures welcome]” by captain-maramo, Lucy, Lethe, -
• “Chaotischer schreiben - mehr erzählen. Ein kollaborativer Schreibworkshop zum Congress, für alle, die was zu schreiben haben. [all creatures welcome]” by Lisa Tschorn, Isabella Kölz
• “European Health Data Space (EHDS)” by novider
• “Nebelhorn” by Pascal4F
• “Einstieg in JOSM für fortgeschrittene OpenStreetMapper” by Nakaner
• “Payload Picnic [FLINTA* only]” by Katalyst, noctiluca
• “Digitale Inklusion: Wie wir digitale Barrierefreiheit für alle erreichen können” by Jakob Sponholz, Kathrin Klapper, Lena Christina Müller
• “Spieleprogrammieren mit PyGame” by kenorca, darius, Natureshadow
• “Flux Variations” by madonius
• “(How) Can we talk about Palestine?” by HouseOfTea
• “How to: Barrieren brechen mit Open Data [all creatures welcome]” by Luise Bruche, Sebastian Felix Zappe, Lynn Janzen
• “Dungeons & Dragons (D&D) - Intro für Junghackerinnen (12 bis 18 Jahre)” by ghenny
• “GIS in Crisis Areas: Cards, Chaos & Cadus”
• “Daily Tech Talk: CADUS Academy – Building an Open Learning Platform (in deutscher Sprache)”
• “Breaking BOTS: Cheating at Blue Team CTFs with AI Speed-Runs” by Leo Meyerovich, Sindre Breda
• “Mehr Privatsphäre für Android-Smartphones” by flysch
• “Bluetooth Headphone Jacking: A Key to Your Phone” by Dennis Heinze, Frieder Steinmetz
• “Archipel: A local Delay Tolerant Network for humans” by kiwi
• “Securing Open Source Communities WG (How to keep Open Source open)” by quintessence (she/her)
• “Katja Rugeb” by Katja Ruge
• “Cat Got Your Password: Wi-Fi Self Defense For Beginners (Day 4)” by Mitch (he/him), skickar, brandonpaiz, koufax
• “Self-Restricting Software Workshop” by oxzi
• “PeerTube-Meet-Up: für alle, die Instanzen selbst betreiben” by MoniKa (c4E) (she/her)
• “Shit for Future: turning human shit into a climate solution” by Elena
• “Brainstorming - Politischer Kampf und direkte Aktion gegen "KI"” by Luna
• “Laser Beams & Light Streams: Letting Hackers Go Pew Pew, Building Affordable Light-Based Hardware Security Tooling” by Patch, Sam. Beaumont (PANTH13R)
• “Wie wir alte Flipperautomaten am Leben erhalten” by Axel Böttcher
• “Traditionelles Haecksen-Picknick” by Deanna (keins/none-they/them)
• “Haecksen für Nicht-Haecksen [all creatures welcome]” by melzai
• “Widerstand gegen Debanking” by neinzurbezahlkarte, abcdd
• “kathadingsda” by dingsda
• “transmasc meetup [all creatures welcome]” by Li0n
• “Rust programming language: Absolute beginner workshop – FLINTA edition ✨ [FLINTA* only]” by calisti
• “EMF Explorer Badge Electromagnetic Discovery workshop (Day 1)” by Drc3p0 (they/them)
• “Chaos Communication Chemistry: DNA security systems based on molecular randomness” by Anne Lüscher
• “CCC&T - Cosmic ray, the Climate Catastrophe and Trains.” by FantasticMisterFux, louiT
• “The Modular Workshop – The Tunegirl und Rob StrobE” by Rob StrobE
• “Unveiling Spyware & 0-Days Linked to Italy” by rositarijtano
• “ISDN + POTS Telephony at Congress and Camp” by Harald "LaF0rge" Welte
• “Schlechte Karten - IT-Sicherheit im Jahr null der ePA für alle” by Bianca Kastl
• “Empower your non-tech community!” by tabse
• “Soldering Competition - Day 3”
• “Selbsthilfegruppe Verwaltungsdigitalisierung (Faxgeräteclub)” by iusan
• “Wie spreche ich IHN an? Mit anderen Männern über Sexismus, Grenzüberschreitung und sexualisierte/ Partnerschafts-Gewalt reden [all creatures welcome]” by buecherwurm, Julian
• “Gregor Tresher” by Gregor Tresher
• “Elektrobausteine - Tag 2”
• “Science in Science Fiction: Die reale Wissenschaft von Star Trek und Star Wars” by Wolfspelz
• “The Freak Show Clubhouse” by Tim Pritlove
• “Alles smart und sicher? Oder nur Schall und Rauch? Zu den Datenspuren smarter Rauchmelder.” by Albrecht, zazakalina (sie/she)
• “c3auti Team Meeting”
• “Congress-Pen&Paper-Night” by Luna
• “Chaos Cannabis Cup” by AdeptVeritatis
• “Bachmut, 19. April 2023 – Lesung und Gespräch”
• “Building antennas and tinkering with them” by strafpla.net (he/him)
• “LED Strips Everywhere for Everyone! workshop”
• “📑 Lesezeichen 2: Das JavaScript schlägt zurück 👾” by Birdy1976
• “Am Arsch des Fediverses/At the bottom of the Fediverse” by poo
• “OpenPGP 2025: Zero → Hero” by darko
• “🙊 Oral Languages Are Watched, Sign Languages Are Free 🙉” by snoopy, seejayer (🙊🙉 📵 7880)
• “POTA - Parks on the Air [DAY 2]” by DK4HAA
• “HOW TO BREAK YOUR FACE: Keeping up with the arms race of anti-surveillance recognition tactics.” by tabse
• “Power Zeichnen – Machtdynamiken sichtbar machen (Workshop)” by Marty
• “noisio Levitation OSC Drone Synthesizer” by Mitch (he/him)
• “Doomsday-Porn, Schäferhunde und die „niedliche Abschiebung“ von nebenan: Wie autoritäre Akteure KI-generierte Inhalte für Social Media nutzen” by Katharina Nocun
• “Queering (and Imploding) Drone Usage at EU Borders” by isenguard, @ndi
• “C3RP - 39C3 Roleplaying Night (because 80min is not enough)” by koehr
• “Antifaschistischer Akkordeon-Punk - Grölen gegen Rechts” by Pianostein
• “The Digital Identity Event Horizon” by Cade Diehm
• “Cider Flows @ FHB” by algoldor
• “The Bitcoin Security Budget and Its Implications A Look at the Security, Scaling and Spam Resistance of Proof of Work Cryptocurrencies” by Francisco "ArticMine" Cabañas
• “Getting started with the Pocket Science Lab” by Alexander Bessman
• “Papierbasteln Tag 1” by Cisz (er, he)
• “Das Wort für Zuhause ist Feuer - midnight porn”
• “AI-tiny Blinkeshit3000 (SMD reflow for beginners)” by Mitch (he/him)
• “Der verlängerte Atem pres. Ghost Processes” by Martin, Fiona, Jil
• “Wir bauen einen Digital-O-Mat für die Berliner Wahl 2026” by e-punc (der / he)
• “Inklusion and Research Data Management (RDM): Missing visibility of neurodivergent researcher” by sarah31415
• “Disarray Desnarler -- Build and flash your DIY Macropad” by Mitch (he/him)
• “The Spoon Game - 39C3 Special Edition workshop (#3)” by Atypha (She)
• “Flow-Vi” by Viv & Flo
• “Celestial Navigation hands-on” by hudson
• “Elektrobausteine - Tag 1”
• “Die Känguru-Rebellion: Digital Independence Day” by Linus Neumann, Marc-Uwe Kling
• “Asahi Linux - Porting Linux to Apple Silicon” by sven
• “Rust programming language: An absolute beginner workshop with intro presentation [all creatures welcome]” by calisti
• “Über europäische Grenzen hinweg auf klinischen Daten rechnen - aber sicher!” by Hendrik Ballhausen
• “KI.VooDoo - extracting future sealife with genAI” by tabse
• “Fediverse-Meet-Up: Treffen von allen, die Instanzen selber betreiben (möchten)” by MoniKa (c4E) (she/her)
• “RAYHUNTER: Let's hunt Stingrays - Community Meetup” by beeblebroxx
• “Emergente Systeme, nachhaltige Konflikte, Warum unsere IT nicht an Hacks scheitert – sondern an sich selbst” by Spock0010
• “Community data centers - a workshop” by Rainer Rehak, Nicolas, Tara Merk
• “Komona we can make it work - Plenary”
• “datarequests.org office hours: We answer your GDPR request questions” by Lorenz, Benni
• “Making the Magic Leap past NVIDIA's secure bootchain and breaking some Tesla Autopilots along the way” by EliseZeroTwo, Elise Amber Katze
• “Working With (and Around) Research Infrastructure for Excellent Citizen Science – Understanding User Stories and Needs” by katy13
• “Wikimedia Commons: Mehr als nur Bilder für Wikipedia - Eine Einführung in das Projekt” by GPSLeo
• “Vegan Chaos: Let's Talk (Day 2)” by ganzesaetze (he/him)
• “Ninsn” by Nina
• “WTF, nochmal das Ganze?” by neinzurbezahlkarte
• “Jujutsu: A Git-compatible version control system” by blinry
• “GuteN8Geschichte "Das NEINhorn" - Tag 1”
• “Die Sicherheits_lücke live vom 39c3: ein Tag mit der GI” by Volker
• “FLINTA* Neurodivergenz-Meetup [FLINTA* only]” by Tschotsch
• “Alwin/CircuitCircle SupaLoopa & Screamo” by Mitch (he/him)
• “Och Menno X Disconnected Unexpected : Elbonian Incident Response : Wie reagiere ich falsch” by egouvernante, Sven Uckermann, Runtanplan
• “Austauschrunde: Wie kann Online-Dating in einem datensicheren, nicht-kommerziellen Safe(r) Space stattfinden? [all creatures welcome]” by Okapi
• “Junghacker:innentag Einführung”
• “All my Deutschlandtickets gone: Fraud at an industrial scale” by Q Misell, 551724 / maya boeckh
• “CCC-CH Gettogether” by fence
• “TBD friends badge soldering workshop” by the0 (he his him)
• “Chatkontrolle - Ctrl+Alt+Delete” by khaleesi, Markus Reuter
• “Die große Datenschutz-, Datenpannen- und DS-GVO-Show” by Alvar C.H. Freude
• “Ein (fast) werbefreites Internet mit einem PiHole - Filter - Session für Anfänger” by Fabiandreas
• “Hakuna Data: Eine (sehr kurze) Einführung in Kiswahili, lexikographische Daten auf Wikidata und Wikifunctions” by Jens Ohlig
• “Hacking Fusion: better Hot-Fusion Technologies that you have not heard about” by Wolfspelz
• “Wer hat Angst vor dem Neutralitätsgebot?” by Hannah Vos, Vivian Kube
• “Debanking und die Folgen für die Rote Hilfe e.V.” by RoteHilfe
• “Accessibilty Helper Introduction”
• “Störmoment” by Vale
• “HOW TO BREAK YOUR FACE: Keeping up with the arms race of anti-surveillance recognition tactics.” by tabse
• “Of Boot Vectors and Double Glitches: Bypassing RP2350's Secure Boot” by stacksmashing, nsr
• “GI Meet-up” by _Elena_Berlin_, Resa, scherrie
• “Comeflywithus” by Steffen Braasch, arl
• “CPU Entwicklung in Factorio: Vom D-Flip-Flop bis zum eigenen Betriebssystem” by PhD (Philipp)
• “Textiles 101: Fast Fiber Transform” by octoprog
• “Running a NGO empowered by with Software Freedom” by Tobias
• “Unsicherheitspaket 2.0” by tyncet, e-punc (der / he)
• “Bachmut, 19. April 2023 – Lesung und Gespräch” by abcdd
• “Landtagsrevue Live - AUA (Ask us Anything)” by Karo, Sabrina, Lukas (veti)
• “Wie eine Gruppe Nerds einen Wald rettete und nur um Haaresbreite vier Wochen Gefängnis entkam” by IngoBlechschmidt
• “KinkyGeeks + RopeLabs Beginner Bondage Workshop Part II: Next Steps” by Pez, Pez (he/they)
• “To sign or not to sign: Practical vulnerabilities in GPG & friends” by 49016, Liam
• “Chatbot Memory/Finetuning/Personality Meetup” by Indraos
• “Relationship Anarchy and Technologies of Connection” by catileptic (they/she)
• “Chaos macht Küche” by Ingwer Andersen
• “Lightning Talks - Tag 3” by bonnie, Gilbert, Andi Bräu, keldo
• “Meshcore & Meshtastic for Hackers: Set up, Configure, & Deploy Nodes for Advanced Use (Day 3)” by Mitch (he/him), skickar, koufax
• “DIY Laptop Music Instruments [all creatures welcome]” by Tess
• “Megastrukturen und Galaktische Imperien (oder: Wie man eine Dyson-Sphäre baut)” by Wolfspelz
• “SHOC Meeting Day 1”
• “Pony Pracht, Nina Bendix Igleses: »Water to Voice« (live perfomance)” by Marty
• “WTF, nochmal das Ganze? II” by neinzurbezahlkarte
• “Treffen der netzpolitischen Community der Schweiz” by Kire
• “CPU-Entwicklung in Factorio: Wie benutze ich PhD's Factorio CPU und wie schreibe ich dafür Programme?” by PhD (he/him)
• “Infrastructure Review” by nicoduck
• “Dissoziative Ressourcen Teilen: Eine DIS-kussion” by Amy (she/her), Luxis
• “Git - Quellcode verwalten für Anfänger*innen [all creatures welcome]” by Anne-Victoria Meyer (sie/ihr)
• “Löte deinen eigenen Euclidean Sequencer” by carinalntz
• “Christoph Fleischer: Traumtaucher (documentary)” by Marty
• “The 39c3 Drag Show” by Keks
• “Ende des Haftungsprivilegs für Hosting-Provider? Was das Russmedia-Urteil des EuGH für das Fediverse bedeutet” by firefly
• “Kenji Tanaka Live” by Kenji Tanak
• “Neue Chaos Events - InselChaos und Håck ma’s Castle plaudern aus dem Nähkästchen” by Daniel, Erwin Ernst "eest9" Steinhammer, lasii, Niklas
• “Not To Be Trusted - A Fiasco in Android TEEs” by 0ddc0de, gannimo, Philipp
• “Verlorene Domains, offene Türen - Was alte Behördendomains verraten” by Tim Philipp Schäfers (TPS)
• “Spectre in the real world: Leaking your private data from the cloud with CPU vulnerabilities” by Thijs Raymakers
• “antistalking.haecksen.org [all creatures welcome]” by Princess
• “Zyklus hacken – Power to the Cycles [all creatures welcome]” by trëma
• “Red teams in military operations”
• “Minecraft Commands” by FMT
• “Denise Frey Electro-Acoustic Ambient Music” by Denise Frey
• “Trans Austauschrunde [TINA* only]” by captain-maramo
• “FragDenStaat Nutzer*innen-Treffen” by Kara
• “RopeLabs Rope Jam” by Pez, Pez (he/they)
• “Omnibus Halbgarer Machenschaften (OHM #23)” by monoxyd, erdgeist
• “Austausch für Eltern und Bezugspersonen von trans Kindern und nicht binären Kindern auf 39C3”
• “Soldering Competition - Prize Awards”
• “hacking medical research for a better transition -- war stories from the backrooms of estrannai.se & co” by ShadowCone (she/her)
• “Awareness / networking - Meeting to excange for people doing awareness work”
• “Rust programming language: An absolute beginner workshop with intro presentation” by calisti
• “Alternative Nutzungsweisen von Microblogging” by sozialwelten (er/ihn)
• “All Sorted by Machines of Loving Grace? "AI", Cybernetics, and Fascism and how to Intervene” by Katika Kühnreich
• “Watch Your Kids: Inside a Children's Smartwatch” by Nils Rollshausen
• “Lina & Nele & Peng” by Lina & Nele & Peng
• “🙊 Oral Languages Are Watched, Sign Languages Are Free 🙉” by snoopy, seejayer (🙊🙉 📵 7880)
• “Chaospager - How to construct an Open Pager System for c3” by Max, Julian
• “lisaholic (live beatset)” by lisaholic
• “From Silicon to Darude Sand-storm: breaking famous synthesizer DSPs” by giulioz
• “HolleLang” by HolleLang
• “Pudding mit Stäbchen essen” by skorpy (she/her)
• “25 Jahre Freifunk - 2027 als Festjahr?” by Andi Bräu
• “Demokratische Schule - Die radikalste Schulart, die es gibt” by Momo42
• “Lingo Coordination Day 3”
• “Little Miss Freedman's Relaxession” by Naama
• “Visualize Your Texts With Wordrain” by Torsten Roeder, Magnus Ahltorp, Maria Skeppstedt
• “Jan Dalvik” by Jan Dalvik
• “Hacking Edge-AI”
• “Building hardware - easier than ever - harder than it should be” by Kliment
• “"Kann KI uns den Klima Aktivismus abnehmen?" - aus Sicht eines Jugend-Umwelt-Verbandes” by Enrico
• “Unnecessarily Complicated Kitchen – Die Wissenschaft des guten Geschmacks” by LukasQ
• “Who's afraid of emotions? From helplessness to impactful activism” by aline
• “Poetic Technologies and an open-source university”
• “Build your own solar powerd Lora node” by mxtom
• “Effizientes Finanzmanagement für alle - Über den nachhaltigen Umgang mit Geld” by sebz
• “Protecting the network data of one billion people: Breaking network crypto in popular Chinese mobile apps” by Mona
• “ccchoir rehearsal 1” by thiesmynther
• “Look what I found! OSINT resources in conflicts” by mfi
• “Meshtastic Chaos Creatures (MCC): Channels Distribution Party” by bak3n3k0 (He/Him)
• “Bingo” by Merle, Kara
• “Cybersecurity Märchen – Neues aus Nerdistan” by mitBen (He,him,he-man)
• “Recharge your batteries with us - an empowering journey through the energy transition” by Salacidre, JulianeB
• “A space odyssey #2: How to study moon rocks from the Soviet sample return mission Luna 24” by Paul Koetter, Christopher Hamann
• “Python Programming for Absolute Beginners” by IngoKleiber (er/sein)
• “Life on Hold: What Does True Solidarity Look Like Beyond Duldung, Camps, Deportation, and Payment Cards?” by Hafid Shaaib, Eric Noel Mbiakeu, H-Shaaib
• “Präfiguration” by Tomate_aka_Radikale_Liebe
• “cleanup”
• “Wando Waiato & The Morellion” by Wandowaiato
• “Digital Humanities auf dem 39C3 @ Sendezentrum” by Torsten Roeder, Ulrike Wuttke
• “c3gsm: Ask-us-Anything about the 39c3 cellular network” by bibor, lynxis lazus, takuto (he/him)
• “Zwischen Brandanschlägen und Platzbesetzungen: Eine antirassistische Geschichte aus Bern (1980 - 2000)” by gabel
• “51 Ways to Spell the Image Giraffe: The Hidden Politics of Token Languages in Generative AI” by Ting-Chun Liu, Leon-Etienne Kühr
• “Sicher durch den Internet-Dschungel - Ein interaktiver Mitmach-Vortrag”
• “FHB Cheese Rendezvous 1” by vrs
• “Nerds spielen Spiele - Tag 3” by monsterchen
• “Get to know the furry fandom (Q&A)” by autinerd (he/they)
• “Gegenmacht - Best of Informationsfreiheit” by Arne Semsrott
• “4ever punk” by DJ Baba Grande
• “Xous: A Pure-Rust Rethink of the Embedded Operating System” by bunnie, Sean "xobs" Cross
• “Nasenmusik für fortgeschrittene Schnüffler*innen”
• “Zentrum für Politische Schönheit: Ein Jahr Adenauer SRP+ und der Walter Lübcke Memorial Park” by Philipp Ruch, Stefan Pelzer
• “Etai Darway” by Etai Darway
• “Hack the Training! Call for Ideas für DIY-Lösungen in Einsatzsimulationen” by Anna-Lea
• “Der Untergang*” by Der Untergang*
• “Handson REUSE.software” by Tobias
• “Cyber-hygiene for highly-exposed journalists and activists” by jerezim
• “Set-top box Hacking: freeing the 'Freebox'” by Frédéric Hoguin
• “Christian Faubel: Electronic Oscillators for organic patterns and polyrhythms Jam Session (live)” by Marty
• “GLAM digital – Kulturerbe im virtuellen Dialog zugänglich machen” by Holger Plickert (WMDE)
• “OpenAutoLab: photographic film processing machine. Fully automatic and DIY-friendly.” by Kauz
• “Pimp Your Katzenohren” by ghenny
• “Mesh Radio Workshop” by jitter (this,that)
• “Open Lab - "Doing strange things with electricity 2"”
• “Let’s Talk! Entspannt neue Kontakte knüpfen [FLINTA* only]” by Gigi
• “Nerds spielen Spiele - Tag 2” by monsterchen
• “FLINTA POTA Party - Parks on the Air” by DK4HAA
• “Christoph Fleischer: Traumtaucher (documentary)” by Marty
• “Nerds spielen Spiele - Tag 1” by monsterchen
• “Steno Meetup / Introduction” by 42triangles (she/her)
• “10 Mark DJ Team” by 10 Mark DJ Team
• “Political Organizing - Tools we need” by Berliner Mieter*innengewerkschaft
• “The Small Packet of Bits That Can Save (or Destabilize) a City” by Manuel Rábade
• “No-Input” by CooperfrauMelissengeist
• “Antennen bauen und damit herumspielen” by strafpla.net (he/him)
• “POTA - Parks on the Air [DAY 1]” by DK4HAA
• “Se habla español” by KarlaBago, manuelrabade
• “Lightning Talks - Tag 2” by bonnie, Gilbert, Andi Bräu, keldo
• “Carry you carry me / Leute Tragen”
• “FHB Cheese Rendezvous 2” by vrs
• “inPunkto” by Takakalle
• “Regiotreffen” by gnom (sie,es / ihr)
• “POC Introduction”
• “Eine typisch österreichische Lösung - die Dirndlkoalition” by unsösterreichts.jetzt, Alexander Muigg
• “Secure Offline Communications: What's Next?” by Nico@Briar
• “Security of Cardiac Implantable Electronic Devices” by dilucide
• “Blocktris game soldering workshop (not for beginners) (Day 1)” by Mitch (he/him)
• “FeTAp 611 unplugged: Taking a rotary dial phone to the mobile age” by Michael Weiner
• “Lingo Coordination Day 2”
• “Marching at KITA (political art - presentation)”
• “Energie von uns für uns! Vergesellschaftung als Lösung für die Transformation unseres Energiesektors” by RWE und co enteignen
• “10 years of Dieselgate” by Felix Domke, Karsten Burger
• “What You Hack Is What You Mean: 35 Years of Wiring Sense into Text” by Torsten Roeder
• “Threat model & best practices for activists”
• “Electronic Oscillators for organic patterns and polyrhythms” by tabse
• ““End Of 10”: How the FOSS Community is Combatting Software-Driven Resource and Energy Consumption” by Joseph P. De Veaugh-Geiss, belobe, Carolina Silva Rode, Bettina Louis
• “Fediverse als Business: Gründungsideen und Geschäftsmodelle / Fediverse as a business: start-up ideas and business models” by sozialwelten (er/ihn)
• “Opening pAMDora's box and unleashing a thousand paths on the journey to play Beatsaber custom songs” by tihmstar
• “Luanti(Minetest)-Mods programmieren” by kenorca, darius, Natureshadow
• “Der Talk: Solidarisch Preppen” by Anna-Lea
• “Autonomous System (AS) (Owner &) Operator Meetup” by skorpy
• “Ingo Boss” by Ingo Boss
• “Betreutes hacken: Broken Access Control” by DerHorst
• “Malware Analysis and Binary Triage” by fxb, deadrabbit, pcbre
• “noisio ATtiny Punk Console” by Mitch (he/him)
• “Stonehenge Cursed Soldering Challenge” by Mitch (he/him)
• “Fidgettoys aus alten Fahrradketten [all creatures welcome]” by neon_mate
• “Kenji Tanaka LIVE // Insights into my workflow, structure and philosophy” by Kenji Tanaka
• “Aber hier Leben? Nein danke! …oder doch? Wie wir der autoritären Zuspitzung begegnen können.” by Jaša Hiergeblieben, Lisa Zugezogen, Jaša Zugezogen | Polylux
• “bushfya” by bushfya
• “Welcome to the House of Tea! <3” by HouseOfTea
• “Wikidata Live Querying” by Lucas Werkmeister
• “Programmierte Kriegsverbrechen? Über KI-Systeme im Kriegseinsatz in Gaza und warum IT-Fachleute sich dazu äußern müssen” by Rainer Rehak
• “Gemüsemusik mit Makey Makey”
• “Rowhammer in the Wild: Large-Scale Insights from FlippyR.AM” by Martin Heckel, Florian Adamsky, Daniel Gruss
• “The CDC Badge: conference badge & devboard with TROPIC01 and ESP32-S3” by dllud, Pavel Polach, bobotronic
• “Repair for future” by Fraxinas
• “Tech-Transcendentalism as Hypermodern Myth and Neofeudal Ideology [all creatures welcome]” by Johannes Jäger, ElleJay (LJ)
• “Rope whippings for beginners” by kluthulhu
• “Antifa-Ost Komplex - What´s with this terrorist organization?” by abcdd
• “Blocktris game soldering workshop (not for beginners) (Day 4)” by Mitch (he/him)
• “CUII: Wie Konzerne heimlich Webseiten in Deutschland sperren” by Lina Lastname, Elias Zeidler (Northernside), Northernside
• “Och Menno – IT und IT Security Uppsis” by Sven Uckermann
• “Hold my passkey! The passwordless future (not) happening” by Haris
• “Heaven Meeting - Day 3”
• “Schwere Weste, dichte Maske – Wie sich Schutzkleidung anfühlt”
• “anders streiten lernen” by Tomate_aka_Radikale_Liebe
• “Von der Wäscheklammer bis zur Modell-Kuppelklemme einer Seilbahn” by timmod
• “Komona we can make it work - Plenary”
• “Disability Justice Art as Praxis” by tabse
• “#TeamDatenschutz-Meetup” by luap42 (er/ihm, he/him)
• “Cat Got Your Password: Wi-Fi Self Defense For Beginners (Day 3)” by Mitch (he/him), skickar, brandonpaiz, koufax
• “Trikkitt: PolyGen Hands on” by Marty
• “Tor Relay Operators Meetup” by Leibi
• “ΠXL: Noisy Improvised Concert on Analog&Digital Modular Synths (live)” by Marty
• “Pwn Basics - Hacking Web Applications for Beginners” by Dr. Affe
• “Introduction to Embedded Rust for beginners (for Hakkaa-Board workshop)” by sirhcel
• “Powering Transparency: Open Data across Parliaments” by How They Vote, Open Parliament TV and Open Data Ranking
• “3. Congress Skatturnier auf dem 39c3 - 2. Serie” by segal
• “RedScout42 – Zur digitalen Wohnungsfrage” by Sandra, Leonard
• “Amateurfunk im All – Kontakt mit Fram2” by akira25, flx, Gato
• “Vegan Chaos: Let's Talk (Day 3)” by ganzesaetze (he/him)
• “39C3 Schedule App users meetup” by tbsprs (he/his)
• “WASH-Sprechstunde” by Anna-Lea
• “FSFE Insights” by Ana
• “CSS Clicker Training: Making games in a "styling" language” by Lyra Rebane
• “Coding Dissent: Art, Technology, and Tactical Media” by Helena Nikonole
• “EDU-Meet-Up: Du machst was im Bildungsbereich? Komm dazu! (#cyberLZ)” by pnrd, MoniKa (c4E) (she/her)
• “Mini-Wasser-Labor for Kids!”
• “Pony Pracht, Nina Bendix Igleses: »Water to Voice« (live perfomance)” by Marty
• “Denkangebot: Rainer Mühlhoff über KI und autoritäre Sehnsüchte im Silicon Valley” by Katharina Nocun
• “Nasenmusik für fortgeschrittene Schnüffler*innen” by Anna-Lea
• “Cognitive Effects Meetup” by Indraos
• “In-house electronics manufacturing from scratch: How hard can it be?” by Augustin Bielefeld, Alexander Willer
• “Bau dir einen Kritzelbecher” by arp (HE / HIM)
• “Don’t look up: There are sensitive internal links in the clear on GEO satellites” by Nadia Heninger, Annie Dai
• “Wikidata and Colonialism in Data” by Cin Pietschmann, Lukas Fuchsgruber
• “netzpolitik.org Off/On: Off The Record live” by Ingo Dachwitz, Markus Reuter, Chris Köver, Esther Menhard
• “TBD friends badge soldering workshop” by the0 (he his him)
• “Linux für Einsteiger:innen (Part 3)” by Sylvia, micu
• “Make Your Own Brain Machine” by Mitch (he/him)
• “Namecoin and Tor PKI 2025” by Jeremy Rand
• “Trigg - Build an Open-Hardware Portable Handheld Games Console”
• “Demystifying Fuzzer Behaviour” by Addison
• “Electronic Oscillators for organic patterns and polyrhythms” by tabse
• “Synth Meetup” by Mitch (he/him)
• “POTA - Parks on the Air [DAY 4]” by DK4HAA
• “Auseinanderbauen für Anfänger”
• “WEKILL//LEAKS "version 0.9" (a card game of courageous publishing and imperialist sh1tf#ckery). launch and playtest.” by HouseOfTea
• “Shitty Robot Battle” by Neo
• “Fimi & Nush” by Hanni
• “On Out” by Unnamed user
• “Einführung in den Online-Editor iD” by Nakaner
• “Mocha with Metamours: A World Café on Decoding Ethical Non-Monogamy” by catileptic (they/she)
• “(How) Can academic research and activism in SAR interact in solidarity?” by I., Andreas Stoiber
• “Schiffsromantik” by phakbert
• “Einführung in Wikidata” by Lucas Werkmeister
• “GAYLIENZ” by Oliotronix
• “Hacking washing machines” by Severin von Wnuck-Lipinski, Hajo Noerenberg
• “EMF Explorer Badge Electromagnetic Discovery workshop (Day 2)” by Drc3p0 (they/them)
• “Liberating Bluetooth on the ESP32” by Antonio Vázquez Blanco (Antón)
• “Hatupangwingwi: The story how Kenyans fought back against intrusive digital identity systems” by Mustafa Mahmoud Yousif
• “Esperanto Schnupperkurs / Esperanto Lightning course” by johmue
• “Daily Tech Talk: CADUS Academy – Building an Open Learning Platform” by Anna-Lea
• “Fossile Industrie liebt KI!” by Moritz, Rike, Stefan, Yannik & Rike, Moritz Leiner
• “Congress-Metatalk” by Luna
• “Mediensucht im digitalen Alltag: Ein offenes Gespräch” by Zebrarider
• “Nextcloud for Activists Meetup”
• “Analog to Algorithm: RSS Disco’s Underground Journey” by RSS Disco
• “Solder Your Own Meshtastic / Meshcore Node” by Mitch (he/him), skickar, Hoid (he/him)
• “Meet-up Bündnis Offene Netzwerke/ Meet-up Alliance for Open network” by samvie
• “The Heartbreak Machine: Nazis in the Echo Chamber” by Martha Root, Eva Hoffmann, Christian Fuchs, .
• “A whirlwind tour through the land of Wikidata-powered apps” by Lucas Werkmeister
• “Wer liegt hier wem auf der Tasche? Genug mit dem Bürgergeld-Fetisch. Stürmt die Paläste!” by Helena Steinhaus
• “Podcasting für Einsteiger*innen” by Bernd
• “chaeza + doc” by chaeza + doc
• “Zweite Sahne & Olga Rhythmus” by Tesa
• “Ethical Non-Monogamy (ENM) 101 – What are they talking about, and why?” by so-ka (he / him), zenme
• “Speedcoding (JavaScript) 🚀” by Birdy1976
• “Daily Tech Talk: CADUS Academy – Building an Open Learning Platform”
• “Widerspruch gegen die elektronische Patientenakte - jetzt gleich hier erledigen” by flysch
• “End of 10 - Linux install party for kids”
• “There is NO WAY we ended up getting arrested for this (Malta edition)” by mixy1, Luke Bjorn Scerri, girogio
• “noisio 8-bit synthesizers” by Mitch (he/him)
• “Camp27 Family Village Kickoff” by aram
• “Von Berlin ins Exil - Lieder der 20er und 30er Jahre”
• “Vortrag: Wie können wir durch gute Kommunikation über unsere Spielvorlieben mehr Spaß an Pen&Paper-Rollenspiel haben, anschließend Congress-Pen&Paper-Night” by Luna
• “Fediverse als Business: Gründungsideen und Geschäftsmodelle / Fediverse as a business: start-up ideas and business models” by sozialwelten (er/ihn)
• “EMF Explorer Badge Electromagnetic Discovery workshop (Day 3)” by Drc3p0 (they/them)
• “Och Menno Mode: Power Cycles, Power Suit, Dresscodes WTF” by Sven Uckermann
• “Blackbox Palantir” by Constanze Kurz, Franziska Görlitz
• “Build Your Own Satellite Ground Station” by tdr112 (he/him)
• “Bürgerrat zur biometrischen Authentifizierung der Zukunft - Eine spielerische Diskussion über Regulierungsansätze” by grbll, philis
• “Build your own Joustmania” by VanFanel
• “The Spoon Game - 39C3 Special Edition workshop (#2)” by Atypha (She)
• “Post-Platform Digital Publishing” by Martha
• “Uprising in Belarus revisted 5 years later #1” by abcdd
• “HOW TO BREAK YOUR FACE: Keeping up with the arms race of anti-surveillance recognition tactics.”
• “Gajek” by Unnamed user
• “Shift allocation for Video Mixer Angels (Day 3)”
• “Programming with the TROPIC01 open architecture secure element” by Pavel Polach

Version 0.1 Dec. 25, 2025

We released a new schedule version!

Version new import Dec. 25, 2025

We released a new schedule version!

Version 1.1 2025-12-25 20:29 Dec. 25, 2025

–

Version 1.1 2025-12-23 20:42 Dec. 23, 2025

We released our first schedule!