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39th Chaos Communication Congress Videos

https://media.ccc.de/b/congress/2025
190•Jommi•3h ago

Comments

blakesterz•2h ago
https://media.ccc.de/v/39c3-a-post-american-enshittification...

Cory Doctorow's talk is quite strong.

teroshan•1h ago
Transcript of the speech on his blog: https://pluralistic.net/2026/01/01/39c3/#the-new-coalition

An excerpt:

> I assume you've spotted the pattern by now: the US trade representative has forced every one of its trading partners to adopt anticircumvention law, to facilitate the extraction of their own people's data and money by American firms. But of course, that only raises a further question: Why would every other country in the world agree to let America steal its own people's money and data, and block its domestic tech sector from making interoperable products that would prevent this theft?

> Here's an anecdote that unravels this riddle: many years ago, in the years before Viktor Orban rose to power, I used to guest-lecture at a summer PhD program in political science at Budapest's Central European University. And one summer, after I'd lectured to my students about anticircumvention law, one of them approached me.

> They had been the information minister of a Central American nation during the CAFTA negotiations, and one day, they'd received a phone-call from their trade negotiator, calling from the CAFTA bargaining table. The negotiator said, "You know how you told me not to give the Americans anticircumvention under any circumstances? Well, they're saying that they won't take our coffee unless we give them anticircumvention. And I'm sorry, but we just can't lose the US coffee market. Our economy would collapse. So we're going to give them anticircumvention. I'm really sorry."

> That's it. That's why every government in the world allowed US Big Tech companies to declare open season on their people's private data and ready cash.

> The alternative was tariffs. Well, I don't know if you've heard, but we've got tariffs now!

> I mean, if someone threatens to burn your house down unless you follow their orders, and then they burn your house down anyway, you don't have to keep following their orders. So…Happy Liberation Day?

divan•55m ago
I shared this link on my personal FB page couple of times and it was automatically removed within seconds.
blurbleblurble•39m ago
Wild.
sneak•35m ago
Then why continue to donate time and attention to censorship platforms? Having a Facebook account is completely optional.
crtasm•13m ago
I imagine it will be uploaded to the youtube channel soon: https://www.youtube.com/@mediacccde
neiman•2h ago
Where were people's favourite lectures?

I attended 7 talks.

My favourite talk by far was hacking the GPG. Brilliant, really: https://media.ccc.de/v/39c3-to-sign-or-not-to-sign-practical...

The "In-house electronics manufacturing from scratch" was a very inspiring talk: https://media.ccc.de/v/39c3-in-house-electronics-manufacturi...

The rest were less good for me personally. Either over-dramatic and shallow (with a sexy-sounding topic) or too procedural in topics I'm not an expert in.

SoylentBob•2h ago
The one on the bluetooth headphone vulnerabilities was quite fun: https://media.ccc.de/v/39c3-bluetooth-headphone-jacking-a-ke...
pamcake•1h ago
I also enjoyed the GPG talk. Other highlights:

Not an Impasse: Child Safety, Privacy, and Healing Together: https://media.ccc.de/v/39c3-not-an-impasse-child-safety-priv...

APT Down and the mystery of the burning data centers: https://media.ccc.de/v/39c3-apt-down-and-the-mystery-of-the-...

Bluetooth Headphone Jacking: A Key to Your Phone: https://media.ccc.de/v/39c3-bluetooth-headphone-jacking-a-ke...

robingchan•1h ago
order by personal rank:

Sandstorm JP-8000 sawtooth DSP reversing https://www.youtube.com/watch?v=XM_q5T7wTpQ

Washing machines hacking https://www.youtube.com/watch?v=Q1S-PVo3GlA

AMD (ps5 sorta) security: https://www.youtube.com/watch?v=cVJZYT8kYsI

cool demo for the BT headphones talk: https://www.youtube.com/watch?v=TK5Tz4Bt94Y

precise time syncing with PTP: https://www.youtube.com/watch?v=dOt-zRIG5co

x86 > arm with intermediate: https://www.youtube.com/watch?v=3yDXyW1WERg

rs_rs_rs_rs_rs•1h ago
The one on bsd jails https://media.ccc.de/v/39c3-escaping-containment-a-security-...

The one on whatsapp bugs https://media.ccc.de/v/39c3-dngerouslink-a-deep-dive-into-wh...

weinzierl•1h ago
Somehow it did not get much attention, but Signal president Meredith Whittaker (together with Udbhav Tiwari) spoke about the risks and threats from AI-enabled systems.

AI Agent, AI Spy

https://media.ccc.de/v/39c3-ai-agent-ai-spy

I also found the talk about Asahi interesting, both from a technical standpoint but also as a nice update what the current status is.

Asahi Linux - Porting Linux to Apple Silicon

https://media.ccc.de/v/39c3-asahi-linux-porting-linux-to-app...

Finally, not recorded, but workshops like

Foundation workshop: Hands-on, how does the Internet work?

by Ingo Blechschmidt, is congress at its best. Getting a diverse set of people with various backgrounds and knowledge levels to ARP spoof in a little over an hour is art.

https://events.ccc.de/congress/2025/hub/event/detail/foundat...

Alconicon•1h ago
I think the blue team ctf ai talk was a good benchmark were we at right now https://media.ccc.de/v/39c3-breaking-bots-cheating-at-blue-t...
kherud•2h ago
One interesting detail: In previous years, Joscha Bach gave a talk on AI, consciousness, and related topics (see e.g. [0]). A similar talk was planned for this year as well, but after emails between him and Epstein were made public (see his comment on this in [1]), his talk was canceled. Instead, there appears to have been an event that critically addressed the situation [2]. Unfortunately it was not recorded. Did anyone attend? A discussion between Joscha and his critics would have been really interesting.

[0] https://media.ccc.de/v/38c3-self-models-of-loving-grace

[1] https://joscha.substack.com/p/on-the-jeffrey-epstein-affair

[2] https://events.ccc.de/congress/2025/hub/en/event/detail/tech...

weinzierl•1h ago
To add some context and to spare readers who, like me, know nothing about Joscha Bach and only little about Epstein from having to go through all the linked material:

The allegations do not appear to involve abuse or moral complicity with Epstein. Instead, they seem to focus on emails Bach exchanged with Epstein concerning IQ, race, and possibly sex. Bach denies these allegations of racism and sexism.

That is at least how I understand the material based on the provided links.

anotheryou•1h ago
Well that discussion talk is not an open discourse about the situation...

He quoted what he believed was scientific evidence in a private conversation that became public, has comments on fashism being efficient are clearly anti-facist and believed to observe a gender stereotype. No matter if the facts were true, it should be possible to discuss such things (especially those you think are facts) in private without getting canceled. Even if they would play in to the hand of racism or sexism if made as public statements.

I found his appology a bit weak, but I also don't see his offense, despite the messages in public being offensive and possibly harmful.

Alconicon•56m ago
Urgh wtf...

This meta discussion synopsis "Tech-Transcendentalism as Hypermodern Myth and Neofeudal Ideology [all creatures welcome]" feels like reading a rabit hole of a mountain.

I would have loved another talk from Joscha, the critisism is weirdly ignorant.

walls•53m ago
"All of the people I know who were friends with this sociopathic child-trafficking pedophile told me he was reformed now" is certainly something to put out there.
ChrisArchitect•28m ago
Some popular selections with discussion so far:

Bluetooth Headphone Jacking: A Key to Your Phone [video]

https://news.ycombinator.com/item?id=46453204

Hacking Washing Machines [video]

https://news.ycombinator.com/item?id=46428496

Escaping containment: A security analysis of FreeBSD jails [video]

https://news.ycombinator.com/item?id=46436828

All my Deutschlandtickets gone: Fraud at an industrial scale [video]

https://news.ycombinator.com/item?id=46411930

Fnoord•19m ago
I haven't seen all of them (which I wanted to see) yet, I had a lot of fun with various talks. Thus far, my favourite one was hands down [1], and I can explain why. I am not at all good with hardware, nor hardware designing i.e. I'm not the target audience for this talk.

However, the talk was beautiful. It went quick, was informative, good slides, very respectful Q&A (comms and quality-wise), and it had a message of DIY _and_ inspiring hope. It is easy to criticize X or say we need to do better with Y. These guys are doing it, and their journey and findings is completely open source (even though there was substantial financial risk involved). The hacker spirit 101.

[1] https://media.ccc.de/v/39c3-in-house-electronics-manufacturi...

FracturedJson

https://github.com/j-brooke/FracturedJson/wiki
248•PretzelFisch•3h ago•60 comments

10 years of personal finances in plain text files

https://sgoel.dev/posts/10-years-of-personal-finances-in-plain-text-files/
242•wrxd•5h ago•94 comments

39th Chaos Communication Congress Videos

https://media.ccc.de/b/congress/2025
190•Jommi•3h ago•20 comments

Ask HN: Who is hiring? (January 2026)

11•whoishiring•22m ago•7 comments

Standard Ebooks: Public Domain Day 2026 in Literature

https://standardebooks.org/blog/public-domain-day-2026
218•WithinReason•7h ago•40 comments

Assorted less(1) tips

https://blog.thechases.com/posts/assorted-less-tips/
56•todsacerdoti•3h ago•12 comments

What You Need to Know Before Touching a Video File

https://gist.github.com/arch1t3cht/b5b9552633567fa7658deee5aec60453/
91•qbow883•5d ago•51 comments

HPV vaccination reduces oncogenic HPV16/18 prevalence from 16% to <1% in Denmark

https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2025.30.27.2400820
270•stared•6h ago•130 comments

Show HN: Dealta – A game-theoretic decentralized trading protocol

https://github.com/orgs/Dealta-Foundation/repositories
30•kalenvale•3h ago•10 comments

Why users cannot create Issues directly

https://github.com/ghostty-org/ghostty/issues/3558
569•xpe•14h ago•202 comments

Happy Public Domain Day 2026

https://publicdomainreview.org/blog/2026/01/public-domain-day-2026/
367•apetresc•14h ago•71 comments

A small collection of text-only websites

https://shkspr.mobi/blog/2025/12/a-small-collection-of-text-only-websites/
43•danielfalbo•5h ago•17 comments

Matz 2/2: The trajectory of Ruby's growth, Open-Source Software today etc.

https://en.kaigaiiju.ch/episodes/matz2
72•kibitan•6d ago•31 comments

A website to destroy all websites

https://henry.codes/writing/a-website-to-destroy-all-websites/
653•g0xA52A2A•19h ago•332 comments

Show HN: Jsonic – Python JSON serialization that works

https://medium.com/dev-genius/jsonic-python-serialization-that-just-works-3b38d07c426d
16•orrbenyamini•6d ago•5 comments

Parental Controls Aren't for Parents

https://beasthacker.com/til/parental-controls-arent-for-parents.html
142•beasthacker•2h ago•119 comments

Can I throw a C++ exception from a structured exception?

https://devblogs.microsoft.com/oldnewthing/20170728-00/?p=96706
39•birdculture•4d ago•9 comments

Show HN: I built a clipboard tool to strip/keep specific formatting like Italics

https://custompaste.com
18•EvaWorld9•4h ago•8 comments

Show HN: OfferGridAI – side-by-side comparison of real estate offers from PDFs

https://offergridai.com
19•beechwood•2h ago•22 comments

The Netflix Simian Army (2011)

https://netflixtechblog.com/the-netflix-simian-army-16e57fbab116
9•rognjen•2h ago•8 comments

FreeBSD: Home NAS, part 1 – configuring ZFS mirror (RAID1)

https://rtfm.co.ua/en/freebsd-home-nas-part-1-configuring-zfs-mirror-raid1/
96•todsacerdoti•9h ago•17 comments

Cameras and Lenses (2020)

https://ciechanow.ski/cameras-and-lenses/
476•sebg•23h ago•53 comments

IPv6 just turned 30 and still hasn't taken over the world

https://www.theregister.com/2025/12/31/ipv6_at_30/
20•Brajeshwar•1h ago•12 comments

One Number I Trust: Plain-Text Accounting for a Multi-Currency Household

https://lalitm.com/post/one-number-i-trust/
85•ayi•5h ago•58 comments

Can Bundler be as fast as uv?

https://tenderlovemaking.com/2025/12/29/can-bundler-be-as-fast-as-uv/
306•ibobev•18h ago•93 comments

Joseph Campbell Meets George Lucas – Part I (2015)

https://www.starwars.com/news/mythic-discovery-within-the-inner-reaches-of-outer-space-joseph-cam...
32•indigodaddy•1d ago•11 comments

Contact the ISS

https://www.ariss.org/contact-the-iss.html
76•logikblok•5d ago•21 comments

Marmot – A distributed SQLite server with MySQL wire compatible interface

https://github.com/maxpert/marmot
148•zX41ZdbW•14h ago•29 comments

Linux is good now

https://www.pcgamer.com/software/linux/im-brave-enough-to-say-it-linux-is-good-now-and-if-you-wan...
975•Vinnl•19h ago•793 comments

BYD Sells 4.6M Vehicles in 2025, Meets Revised Sales Goal

https://www.bloomberg.com/news/articles/2026-01-01/byd-sells-4-6-million-vehicles-in-2025-meets-r...
317•toomuchtodo•1d ago•504 comments