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39C3: Power Cycles

Zero

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/
A Tale of Two Leaks:
31 min

A Tale of Two Leaks:

How Hackers Breached the Great Firewall of China

FeTAp 611 unplugged
34 min

FeTAp 611 unplugged

Taking a rotary dial phone to the mobile age

Building a NOC from scratch
34 min

Building a NOC from scratch

When Vibe Scammers Met Vibe Hackers: Pwning PhaaS with Their Own Weapons
34 min

When Vibe Scammers Met Vibe Hackers: Pwning PhaaS with Their Own Weapons

ISDN + POTS Telephony at Congress and Camp
35 min

ISDN + POTS Telephony at Congress and Camp

I Hated All The Cross-Stitch Software So I Made My Own: My Deranged Outsider Software Suite For Making Deranged Outsider Art
36 min

I Hated All The Cross-Stitch Software So I Made My Own: My Deranged Outsider Software…

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

Watch Your Kids: Inside a Children's Smartwatch

Fossile Industrie liebt KI!
37 min

Fossile Industrie liebt KI!

Prometheus: Reverse-Engineering Overwatch
37 min

Prometheus: Reverse-Engineering Overwatch

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
38 min

We, the EU, and 1064 Danes decided to look into YouTube: A story about how the EU gave us…

Race conditions, transactions and free parking
38 min

Race conditions, transactions and free parking

Wie wir alte Flipperautomaten am Leben erhalten
38 min

Wie wir alte Flipperautomaten am Leben erhalten

The Eyes of Photon Science: Imaging, Simulation and the Quest to Make the Invisible Visible
39 min

The Eyes of Photon Science: Imaging, Simulation and the Quest to Make the Invisible…

Amateurfunk im All – Kontakt mit Fram2
39 min

Amateurfunk im All – Kontakt mit Fram2

“End Of 10”: How the FOSS Community is Combatting Software-Driven Resource and Energy Consumption
39 min

“End Of 10”: How the FOSS Community is Combatting Software-Driven Resource and Energy…

Amtsgeheimnis raus, Datenhalde rein
39 min

Amtsgeheimnis raus, Datenhalde rein

Was die Informationsfreiheit in Österreich bringt

How To Minimize Bugs in Cryptography Code
40 min

How To Minimize Bugs in Cryptography Code

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

Live, Die, Repeat
40 min

Live, Die, Repeat

The fight against data retention and boundless access to…

Light in the Dark(net)
40 min

Light in the Dark(net)

Lessons from Building an Open-Architecture Secure Element
42 min

Lessons from Building an Open-Architecture Secure Element

Variable Fonts — It Was Never About File Size
43 min

Variable Fonts — It Was Never About File Size

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

Developing New Medicines in the Age of AI and Personalized Medicine

Spectre in the real world: Leaking your private data from the cloud with CPU vulnerabilities
45 min

Spectre in the real world: Leaking your private data from the cloud with CPU…

1965 + 60 Years of Algorithmic Art with Computers
50 min

1965 + 60 Years of Algorithmic Art with Computers

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

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

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

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

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

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

Wer liegt hier wem auf der Tasche?
56 min

Wer liegt hier wem auf der Tasche?

Genug mit dem Bürgergeld-Fetisch. Stürmt die Paläste!

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…

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

APT Down and the mystery of the burning data centers

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

Agentic ProbLLMs: Exploiting AI Computer-Use and Coding Agents

BitUnlocker: Leveraging Windows Recovery to Extract BitLocker Secrets
59 min

BitUnlocker: Leveraging Windows Recovery to Extract BitLocker Secrets

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

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

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…

Infrastructure Review
63 min

Infrastructure Review

Lightning Talks - Tag 2
119 min

Lightning Talks - Tag 2

Lightning Talks - Tag 3
119 min

Lightning Talks - Tag 3