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39C3: Power Cycles

39c3-eng

Full playlist: Video / Audio

The 39th Chaos Communication Congress (39C3) takes place in Hamburg on 27-30 Dec 2025, and is the 2025 edition of the annual four-day conference on technology, society and utopia organized by the Chaos Computer Club (CCC) and volunteers. Congress offers lectures and workshops and various events on a multitude of topics including (but not limited to) information technology and generally a critical-creative attitude towards technology and the discussion about the effects of technological advances on society.
https://events.ccc.de/congress/2025/
Die Känguru-Rebellion: Digital Independence Day
56 min

Die Känguru-Rebellion: Digital Independence Day

All my Deutschlandtickets gone: Fraud at an industrial scale
60 min

All my Deutschlandtickets gone: Fraud at an industrial scale

A post-American, enshittification-resistant internet
61 min

A post-American, enshittification-resistant internet

To sign or not to sign: Practical vulnerabilities in GPG & friends
48 min

To sign or not to sign: Practical vulnerabilities in GPG & friends

Hacking washing machines
56 min

Hacking washing machines

CCC-Jahresrückblick
91 min

CCC-Jahresrückblick

A Tale of Two Leaks:
31 min

A Tale of Two Leaks:

How Hackers Breached the Great Firewall of China

KIM 1.5: Noch mehr Kaos In der Medizinischen Telematikinfrastruktur (TI)
54 min

KIM 1.5: Noch mehr Kaos In der Medizinischen Telematikinfrastruktur (TI)

Opening Ceremony
21 min

Opening Ceremony

Who cares about the Baltic Jammer?
36 min

Who cares about the Baltic Jammer?

Terrestrial Navigation in the Baltic Sea Region

Zentrum für Politische Schönheit:
42 min

Zentrum für Politische Schönheit:

Ein Jahr Adenauer SRP+ und der Walter Lübcke Memorial Park

Agentic ProbLLMs: Exploiting AI Computer-Use and Coding Agents
58 min

Agentic ProbLLMs: Exploiting AI Computer-Use and Coding Agents

The art of text (rendering)
38 min

The art of text (rendering)

RedScout42 – Zur digitalen Wohnungsfrage
38 min

RedScout42 – Zur digitalen Wohnungsfrage

Building hardware - easier than ever - harder than it should be
35 min

Building hardware - easier than ever - harder than it should be

Chatkontrolle - Ctrl+Alt+Delete
55 min

Chatkontrolle - Ctrl+Alt+Delete

From Silicon to Darude Sand-storm: breaking famous synthesizer DSPs
39 min

From Silicon to Darude Sand-storm: breaking famous synthesizer DSPs

Verlorene Domains, offene Türen
40 min

Verlorene Domains, offene Türen

Was alte Behördendomains verraten

Neuroexploitation by Design
39 min

Neuroexploitation by Design

Wie Algorithmen in Glücksspielprodukten sich Wirkweisen des…

Excuse me, what precise time is It?
56 min

Excuse me, what precise time is It?

DNGerousLINK
52 min

DNGerousLINK

A Deep Dive into WhatsApp 0-Click Exploits on iOS and…

Bluetooth Headphone Jacking: A Key to Your Phone
59 min

Bluetooth Headphone Jacking: A Key to Your Phone

Building a NOC from scratch
34 min

Building a NOC from scratch

All Sorted by Machines of Loving Grace?
38 min

All Sorted by Machines of Loving Grace?

"AI", Cybernetics, and Fascism and how to Intervene

Current Drone Wars
42 min

Current Drone Wars

AI-generated content in Wikipedia - a tale of caution
37 min

AI-generated content in Wikipedia - a tale of caution

Opening pAMDora's box and unleashing a thousand paths on the journey to play Beatsaber custom songs
44 min

Opening pAMDora's box and unleashing a thousand paths on the journey to play Beatsaber…

Liberating Bluetooth on the ESP32
33 min

Liberating Bluetooth on the ESP32

Skynet Starter Kit
58 min

Skynet Starter Kit

From Embodied AI Jailbreak to Remote Takeover of Humanoid…

Handy weg bis zur Ausreise
61 min

Handy weg bis zur Ausreise

Wie Cellebrite ins Ausländeramt kam

Power Cycle B7 oder Warum kauft man eine Zeche?
40 min

Power Cycle B7 oder Warum kauft man eine Zeche?

Lightning Talks - Tag 2
119 min

Lightning Talks - Tag 2

„KI“, Digitalisierung und Longevity als Fix für ein kaputtes Gesundheitssystem?
53 min

„KI“, Digitalisierung und Longevity als Fix für ein kaputtes Gesundheitssystem?

CPU Entwicklung in Factorio
38 min

CPU Entwicklung in Factorio

Vom D-Flip-Flop bis zum eigenen Betriebssystem

Breaking architecture barriers: Running x86 games and apps on ARM
38 min

Breaking architecture barriers: Running x86 games and apps on ARM

selbstverständlich antifaschistisch!
58 min

selbstverständlich antifaschistisch!

Aktuelle Informationen zu den Verfahren im Budapest-Komplex…

Brennende Wälder und Kommentarspalten
39 min

Brennende Wälder und Kommentarspalten

Klimaupdate mit dem FragDenStaat Climate Helpdesk

Not To Be Trusted - A Fiasco in Android TEEs
49 min

Not To Be Trusted - A Fiasco in Android TEEs

Cracking open what makes Apple's Low-Latency WiFi so fast
39 min

Cracking open what makes Apple's Low-Latency WiFi so fast

Endlich maschinenlesbare Urteile!
38 min

Endlich maschinenlesbare Urteile!

Open Access für Juristen

FeTAp 611 unplugged
34 min

FeTAp 611 unplugged

Taking a rotary dial phone to the mobile age

Demystifying Fuzzer Behaviour
39 min

Demystifying Fuzzer Behaviour

ISDN + POTS Telephony at Congress and Camp
35 min

ISDN + POTS Telephony at Congress and Camp

Don’t look up: There are sensitive internal links in the clear on GEO satellites
38 min

Don’t look up: There are sensitive internal links in the clear on GEO satellites

In-house electronics manufacturing from scratch: How hard can it be?
39 min

In-house electronics manufacturing from scratch: How hard can it be?

Throwing your rights under the Omnibus
60 min

Throwing your rights under the Omnibus

How the EU's reform agenda threatens to erase a decade of…

Amateurfunk im All – Kontakt mit Fram2
39 min

Amateurfunk im All – Kontakt mit Fram2

Xous: A Pure-Rust Rethink of the Embedded Operating System
39 min

Xous: A Pure-Rust Rethink of the Embedded Operating System

Chaos macht Küche
39 min

Chaos macht Küche

Chaospager
38 min

Chaospager

How to construct an Open Pager System for c3

Wie wir alte Flipperautomaten am Leben erhalten
38 min

Wie wir alte Flipperautomaten am Leben erhalten

Developing New Medicines in the Age of AI and Personalized Medicine
44 min

Developing New Medicines in the Age of AI and Personalized Medicine

Pwn2Roll: Who Needs a 595€ Remote When You Have wheelchair.py?
56 min

Pwn2Roll: Who Needs a 595€ Remote When You Have wheelchair.py?

Persist, resist, stitch
42 min

Persist, resist, stitch

Suing spyware in Europe: news from the front!
56 min

Suing spyware in Europe: news from the front!

Gegenmacht - Best of Informationsfreiheit
55 min

Gegenmacht - Best of Informationsfreiheit

Recharge your batteries with us
39 min

Recharge your batteries with us

– an empowering journey through the energy transition

Auf die Dauer hilft nur Power
40 min

Auf die Dauer hilft nur Power

Herausforderungen für dezentrale Netzwerke aus Sicht der…

How To Minimize Bugs in Cryptography Code
40 min

How To Minimize Bugs in Cryptography Code

Power Cycles statt Burnout – Wie Einflussnahme nicht verpufft
43 min

Power Cycles statt Burnout – Wie Einflussnahme nicht verpufft

Reverse engineering the Pixel TitanM2 firmware
37 min

Reverse engineering the Pixel TitanM2 firmware

How to render cloud FPGAs useless
40 min

How to render cloud FPGAs useless

51 Ways to Spell the Image Giraffe:
38 min

51 Ways to Spell the Image Giraffe:

The Hidden Politics of Token Languages in Generative AI

A space odyssey #2: How to study moon rocks from the Soviet sample return mission Luna 24
53 min

A space odyssey #2: How to study moon rocks from the Soviet sample return mission Luna 24

A Quick Stop at the HostileShop
32 min

A Quick Stop at the HostileShop

Not an Impasse: Child Safety, Privacy, and Healing Together
45 min

Not an Impasse: Child Safety, Privacy, and Healing Together

freiheit.exe - Utopien als Malware
39 min

freiheit.exe - Utopien als Malware

Neue Chaos Events
58 min

Neue Chaos Events

InselChaos und Håck ma’s Castle plaudern aus dem Nähkästchen

Watch Your Kids: Inside a Children's Smartwatch
36 min

Watch Your Kids: Inside a Children's Smartwatch

Escaping Containment: A Security Analysis of FreeBSD Jails
59 min

Escaping Containment: A Security Analysis of FreeBSD Jails

Digitale Inklusion: Wie wir digitale Barrierefreiheit für alle erreichen können
59 min

Digitale Inklusion: Wie wir digitale Barrierefreiheit für alle erreichen können

Amtsgeheimnis raus, Datenhalde rein
39 min

Amtsgeheimnis raus, Datenhalde rein

Was die Informationsfreiheit in Österreich bringt

Textiles 101: Fast Fiber Transform
41 min

Textiles 101: Fast Fiber Transform

Schlechte Karten - IT-Sicherheit im Jahr null der ePA für alle
60 min

Schlechte Karten - IT-Sicherheit im Jahr null der ePA für alle

Design for 3D-Printing
37 min

Design for 3D-Printing

Machine Vision
34 min

Machine Vision

Vom Algorithmus zum Baumpilz im digitalen Metabolismus

Programmierte Kriegsverbrechen?
60 min

Programmierte Kriegsverbrechen?

Über KI-Systeme im Kriegseinsatz in Gaza und warum…

Hatupangwingwi
55 min

Hatupangwingwi

The story how Kenyans fought back against intrusive digital…

Greenhouse Gas Emission Data
39 min

Greenhouse Gas Emission Data

Public, difficult to access, and not always correct

APT Down and the mystery of the burning data centers
58 min

APT Down and the mystery of the burning data centers

Chaos Communication Chemistry
41 min

Chaos Communication Chemistry

DNA security systems based on molecular randomness

Supplements und Social Media – wenn der Online-Hype zur realen Gesundheitsgefahr wird
58 min

Supplements und Social Media – wenn der Online-Hype zur realen Gesundheitsgefahr wird

Wer liegt hier wem auf der Tasche?
56 min

Wer liegt hier wem auf der Tasche?

Genug mit dem Bürgergeld-Fetisch. Stürmt die Paläste!

The Small Packet of Bits That Can Save (or Destabilize) a City
40 min

The Small Packet of Bits That Can Save (or Destabilize) a City

What Makes Bike-Sharing Work?
40 min

What Makes Bike-Sharing Work?

Insights from 43 Million Kilometers of European Cycling Data

Learning from South Korean Telco Breaches
49 min

Learning from South Korean Telco Breaches

Wer hat Angst vor dem Neutralitätsgebot?
42 min

Wer hat Angst vor dem Neutralitätsgebot?

Celestial navigation with very little math
36 min

Celestial navigation with very little math

Prometheus: Reverse-Engineering Overwatch
37 min

Prometheus: Reverse-Engineering Overwatch

Live, Die, Repeat
40 min

Live, Die, Repeat

The fight against data retention and boundless access to…

Lightning Talks - Tag 3
119 min

Lightning Talks - Tag 3

Set-top box Hacking: freeing the 'Freebox'
51 min

Set-top box Hacking: freeing the 'Freebox'

AI Agent, AI Spy
40 min

AI Agent, AI Spy

Chaos all year round
49 min

Chaos all year round

CSS Clicker Training: Making games in a "styling" language
39 min

CSS Clicker Training: Making games in a "styling" language

When 8 Bits is Overkill: Making Blinkenlights with a 1-bit CPU
31 min

When 8 Bits is Overkill: Making Blinkenlights with a 1-bit CPU

Doomsday-Porn, Schäferhunde und die „niedliche Abschiebung“ von nebenan
60 min

Doomsday-Porn, Schäferhunde und die „niedliche Abschiebung“ von nebenan

Wie autoritäre Akteure KI-generierte Inhalte für Social…

Shit for Future: turning human shit into a climate solution
40 min

Shit for Future: turning human shit into a climate solution

Blackbox Palantir
57 min

Blackbox Palantir

Making the Magic Leap past NVIDIA's secure bootchain and breaking some Tesla Autopilots along the way
57 min

Making the Magic Leap past NVIDIA's secure bootchain and breaking some Tesla Autopilots…

Teckids – eine verstehbare (digitale) Welt
29 min

Teckids – eine verstehbare (digitale) Welt

BitUnlocker: Leveraging Windows Recovery to Extract BitLocker Secrets
59 min

BitUnlocker: Leveraging Windows Recovery to Extract BitLocker Secrets

And so it begins - Wie unser Rechtsstaat auf dem Highway Richtung Trumpismus rast – und warum afghanische Kläger*innen für uns die Notbremse ziehen
49 min

And so it begins - Wie unser Rechtsstaat auf dem Highway Richtung Trumpismus rast – und…

Unnecessarily Complicated Kitchen – Die Wissenschaft des guten Geschmacks
75 min

Unnecessarily Complicated Kitchen – Die Wissenschaft des guten Geschmacks

a media-almost-archaeology on data that is too dirty for "AI"
37 min

a media-almost-archaeology on data that is too dirty for "AI"

Light in the Dark(net)
40 min

Light in the Dark(net)

The Last of Us - Fighting the EU Surveillance Law Apocalypse
61 min

The Last of Us - Fighting the EU Surveillance Law Apocalypse

Kenji Tanaka LIVE // Insights into my workflow, structure and philosophy
63 min

Kenji Tanaka LIVE // Insights into my workflow, structure and philosophy

PRÜF
38 min

PRÜF

BE Modded: Exploring and hacking the Vital Bracelet ecosystem
34 min

BE Modded: Exploring and hacking the Vital Bracelet ecosystem

Syncing visuals and stage lights against the beat of live music: an introduction
30 min

Syncing visuals and stage lights against the beat of live music: an introduction

Von wegen Eisblumen! Wie man mit Code, Satelliten und Schiffsexpeditionen die bunte Welt des arktischen Phytoplanktons sichtbar macht
37 min

Von wegen Eisblumen! Wie man mit Code, Satelliten und Schiffsexpeditionen die bunte Welt…

Variable Fonts — It Was Never About File Size
43 min

Variable Fonts — It Was Never About File Size

The Angry Path to Zen: AMD Zen Microcode Tools and Insights
36 min

The Angry Path to Zen: AMD Zen Microcode Tools and Insights

Hegemony Eroding: Excavating Diversity in Latent Space
35 min

Hegemony Eroding: Excavating Diversity in Latent Space

The Museum of Care: Open-Source Survival Kit Collection
37 min

The Museum of Care: Open-Source Survival Kit Collection

Lessons from Building an Open-Architecture Secure Element
42 min

Lessons from Building an Open-Architecture Secure Element

Build a Fake Phone, Find Real Bugs
41 min

Build a Fake Phone, Find Real Bugs

Qualcomm GPU Emulation and Fuzzing with LibAFL QEMU

Von Fuzzern zu Agenten: Entwicklung eines Cyber Reasoning Systems für die AIxCC
52 min

Von Fuzzern zu Agenten: Entwicklung eines Cyber Reasoning Systems für die AIxCC

Verschlüsselung brechen durch physischen Zugriff - Smartphone Beschlagnahme durch Polizei
38 min

Verschlüsselung brechen durch physischen Zugriff - Smartphone Beschlagnahme durch Polizei

Human microservices at the Dutch Railways: modern architecture, ancient hardware?
60 min

Human microservices at the Dutch Railways: modern architecture, ancient hardware?