All talks will be live streamed, and right after the talk is done you have a rough cut available instantly under "re-live" you can watch until the final recording is available; https://streaming.media.ccc.de/39c3/relive
I should note that some talks will not be recorded, and only available at the congress. These are clearly marked on the congress hub website, but not easily available on the fahrplan view.
I made https://fahrplan.cc where you can filter the [not] recorded sessions, categories, and titles.
I've mostly made it for myself to skip the recorded sessions when on-site and to see what's coming up at the current time of day. It therefore tries to include all the self organized sessions, workshops, meetups, music programs, etc. I've been running it for a few years and people use it for all kinds of use cases, including sitting at home and watching the streams.
Me and some friends used to attend the CCC some 15-20 years ago. Back then, we just showed up at the entrance on the first day and bought our tickets there.
This year we were toying with the idea of going for a revival. But man, did we underestimate how much this event has grown...
Tickets in the second presale round were gone within 1-2 seconds. We didn't stand a chance. I feel like we failed the entry exam tbh.
Anyways, to everybody who did score a ticket: have phun, and happy hacking!
If you're looking for a similar event, you might want to check out GPN - Gulaschprogrammiernacht (https://gulas.ch).
It skews a bit more German, but it's essentially a smaller "summer congress" that used to have free attendance until this year (tickets now cost 10€ to cover the breakfast, IIRC). A lot less people there, but the general vibe is very similar.
Hacking and politics was always deeply intertwined in Germany/Europe. Especially the CCC has always been at least as much a political organization as it is a hacker community.
Personally, I’m very much looking forward to the many talks from the „politics“ category. You have the wrong mindset.
Originally, I wanted to enjoy the cringe fest of privacy related grandstanding while the „community“ was absolutely silent during the dystopian Covid overreach.
But then I spotted, between the many „Nazis everywhere“ vibed talks, one spectacular Antifa affiliated talk about the „Budapest-Complex“.
> Der Vorwurf der … steht in keinem Verhältnis zu den verhandelten Vorkommnissen
Roughly translated: The claim of … is completely disproportionate relative to the discussed events.
„Discussed events“ as in? That some random pedestrian almost got killed because someone decided he‘s a neonazi? Hammers are nowhere to be mentioned. I mean, my knowledge of this is a little bit rusty, but somehow I get the feeling it’s going to be an inspiring leadership class in bending the meanings of words.
By the way, the Antifa-Ost which this talks seem to be concerned with is afaik exactly one of those groups mentioned in the recent US admin‘s update to the list of terrorist groups.
I'll never get people who say that there is too much politics at a god damn hacker conference like the CCC, considering The Chaos Computer Club was founded in 1981 specifically to be a political watchdog.
more so especially since the very act of "hacking" is a political statement because it involves redistributing power over information.
Code is law, remember?
That would be like complaining about "too much law" at a constitutional convention.
Some talks which sound really brilliant. I love [0] exploiting a memory leak for years before it's fixed. Also [1] I'm really curious about the custom crypto used in Chinese apps. Oh and curious about the found [2] GPG vulnerabilities. I think some of the politics ones are actually also very interesting. Looking forward to the streams.
Going to CCC changed my life last year and really opened up my eyes. So sad I'm not able to attend this year, but hoping I am able to return soon. Anyone who understands why technology cannot be viewed in a vacuum without considering the humans who use it will fit in immediately. Do yourself a favor and go.
I only watched two talks. Talks are not why you go to CCC, in my opinion. I spent most of CCC talking. I tried to have some projects, but I just got stuck in conversation all the time.
CCC was to me the first time I had ever been to a place where most people were like minded. I have been searching for a place where I can meet likeminded people for many years, that wasn't online chatrooms. Once I got there, there was an almost immediate "wow this is my crowd".
It does help to have friends that are somewhat networked and can show you the way and introduce you to people though, as many just sit and hang out with their usual crowd. For me, I ended up talking to a lot of the guys from the same country. I also hung out with internet friends and met their friends. It was great.
Uncertain if this is OT, but given that the CCC is politically inspired organization, I hope not:
One thing that still seems absent is awareness of the complete takeover of "gadgets" in schools. Schools these days, as early as primary school, shove screens in front of children. They're expected to look at them, and "use" them for various activities, including practicing handwriting. I wish I was joking [1].
I see two problems with this.
First is that these devices are engineered to be addictive by way of constant notifications/distractions, and learning is something that requires long sustained focus. There's a lot of data showing that under certain common circumstances, you do worse learning from a screen than from paper.
Second is implicitly it trains children to expect that anything has to be done through a screen connected to a closed point-and-click platform. (Uninformed) people will say "people who work with computers make money, so I want my child to have an ipad". But interacting with a closed platform like an ipad is removing the possibilities and putting the interaction "on rails". You don't learn to think, explore and learn from mistakes, instead you learn to use the app that's put in front of you. This in turn reinforces the "computer says no" [2] approach to understanding the world.
I think this is a matter of civil rights and freedom, but sadly I don't often see "civil rights" organizations talk about this. I think I heard Stallman say something along these lines once, but other than that I don't see campaigns anywhere.
The C3's attendees are quite knowledgable in computing topics, so there is no need to bring coals to Newcastle.
The CCC is a German organization. In Germany, the general public already is quite skepctical of tablets in classrooms, so there is not such a necessity to inform the general public of something many people already think.
While there exist initiatives to use tablets in school in Germany (see for example [1]), these (in my opinion misguided) initiatives rather typically fail for financial reasons and because most teachers simply are incapable of using the technology. And, of course, tablets fail all the time.
So, in other countries this may be an important problem, but in Germany, any initiative for tablets in school already fails by the mere incompetence and the mills of bureacracy, so this is rather a potential topic for hacker conventions in other countries.
True! You could apply to give a talk next year. Keeping in mind that not all talks have to be main-track talks for a big audience - there are also several side rooms for minor talks and "self-organized sessions".
Lefties sympathizing with criminals, sharing their wealth distribution fantasies, agitating against competing political views.
You've come a long way, CCC!
The initial ideas was political, but with a clear focus on freedom of information, and the power to govern your own personal data.
39 comments
[ 2.7 ms ] story [ 67.3 ms ] threadAll talks will be live streamed, and right after the talk is done you have a rough cut available instantly under "re-live" you can watch until the final recording is available; https://streaming.media.ccc.de/39c3/relive
The final recording will appear under a day or two after the talk is held: https://media.ccc.de/c/39c3
EDIT: A different variant of the schedule with better filtering is available here: https://events.ccc.de/congress/2025/hub/en/schedule
I should note that some talks will not be recorded, and only available at the congress. These are clearly marked on the congress hub website, but not easily available on the fahrplan view.
I've mostly made it for myself to skip the recorded sessions when on-site and to see what's coming up at the current time of day. It therefore tries to include all the self organized sessions, workshops, meetups, music programs, etc. I've been running it for a few years and people use it for all kinds of use cases, including sitting at home and watching the streams.
Are there any talks whose speakers are known for their expertise that one should pay attention to?
This year we were toying with the idea of going for a revival. But man, did we underestimate how much this event has grown...
Tickets in the second presale round were gone within 1-2 seconds. We didn't stand a chance. I feel like we failed the entry exam tbh.
Anyways, to everybody who did score a ticket: have phun, and happy hacking!
I've stopped attending it about 10 years ago. I rather prefer to watch some few interesting topics online, and skip all the wanna-be political junk.
It skews a bit more German, but it's essentially a smaller "summer congress" that used to have free attendance until this year (tickets now cost 10€ to cover the breakfast, IIRC). A lot less people there, but the general vibe is very similar.
https://matrix.to/#/%23hn-at-39c3%3Arustch.at
Every year you got new people who find out the hard way that the CCC is a place for ardent activism, not for critical thinking.
The people who stay do it to meet their friends there.
Originally, I wanted to enjoy the cringe fest of privacy related grandstanding while the „community“ was absolutely silent during the dystopian Covid overreach.
But then I spotted, between the many „Nazis everywhere“ vibed talks, one spectacular Antifa affiliated talk about the „Budapest-Complex“.
> Der Vorwurf der … steht in keinem Verhältnis zu den verhandelten Vorkommnissen
Roughly translated: The claim of … is completely disproportionate relative to the discussed events.
„Discussed events“ as in? That some random pedestrian almost got killed because someone decided he‘s a neonazi? Hammers are nowhere to be mentioned. I mean, my knowledge of this is a little bit rusty, but somehow I get the feeling it’s going to be an inspiring leadership class in bending the meanings of words.
By the way, the Antifa-Ost which this talks seem to be concerned with is afaik exactly one of those groups mentioned in the recent US admin‘s update to the list of terrorist groups.
Highly recommend this talk!
The "apolitical" is just an implicit endorsement of the status quo.
LOL, never change CCC, never change...
I'm currently on a plane towards Hamburg and will be speaking on Day 2.
"Agentic ProbLLMs - Exploiting AI Computer-Use and Coding Agents"
https://events.ccc.de/congress/2025/hub/event/detail/agentic...
Too much naive activism and I'm not sure what importing more of the 3rd world has to do with C3 honestly
more so especially since the very act of "hacking" is a political statement because it involves redistributing power over information.
Code is law, remember?
That would be like complaining about "too much law" at a constitutional convention.
[0] https://fahrplan.events.ccc.de/congress/2025/fahrplan/event/... [1] https://fahrplan.events.ccc.de/congress/2025/fahrplan/event/... [2] https://fahrplan.events.ccc.de/congress/2025/fahrplan/event/...
CCC was to me the first time I had ever been to a place where most people were like minded. I have been searching for a place where I can meet likeminded people for many years, that wasn't online chatrooms. Once I got there, there was an almost immediate "wow this is my crowd".
It does help to have friends that are somewhat networked and can show you the way and introduce you to people though, as many just sit and hang out with their usual crowd. For me, I ended up talking to a lot of the guys from the same country. I also hung out with internet friends and met their friends. It was great.
One thing that still seems absent is awareness of the complete takeover of "gadgets" in schools. Schools these days, as early as primary school, shove screens in front of children. They're expected to look at them, and "use" them for various activities, including practicing handwriting. I wish I was joking [1].
I see two problems with this.
First is that these devices are engineered to be addictive by way of constant notifications/distractions, and learning is something that requires long sustained focus. There's a lot of data showing that under certain common circumstances, you do worse learning from a screen than from paper.
Second is implicitly it trains children to expect that anything has to be done through a screen connected to a closed point-and-click platform. (Uninformed) people will say "people who work with computers make money, so I want my child to have an ipad". But interacting with a closed platform like an ipad is removing the possibilities and putting the interaction "on rails". You don't learn to think, explore and learn from mistakes, instead you learn to use the app that's put in front of you. This in turn reinforces the "computer says no" [2] approach to understanding the world.
I think this is a matter of civil rights and freedom, but sadly I don't often see "civil rights" organizations talk about this. I think I heard Stallman say something along these lines once, but other than that I don't see campaigns anywhere.
[1] https://www.letterjoin.co.uk/
[2] https://youtu.be/eE9vO-DTNZc
The CCC is a German organization. In Germany, the general public already is quite skepctical of tablets in classrooms, so there is not such a necessity to inform the general public of something many people already think.
While there exist initiatives to use tablets in school in Germany (see for example [1]), these (in my opinion misguided) initiatives rather typically fail for financial reasons and because most teachers simply are incapable of using the technology. And, of course, tablets fail all the time.
So, in other countries this may be an important problem, but in Germany, any initiative for tablets in school already fails by the mere incompetence and the mills of bureacracy, so this is rather a potential topic for hacker conventions in other countries.
[1] https://www.heise.de/news/Schuelertablets-in-Niedersachsen-M...