21. Gulaschprogrammiernacht

21. Gulaschprogrammiernacht


ch(ea|i)p alternatives

The time has finally come: We want to invite you to the 21st Gulaschprogrammiernacht!

Save the date: 08.06.2023 - 11.06.2023 at HfG and ZKM, Lorenzstr. 15, 76135 Karlsruhe, Baden, Baden-Wuerttemberg, Europe, Earth, Sun, α-Quadrant, Milky Way, Laniakea.

You will find anything the hearts of hackers and haecksen long for at the Gulaschprogrammiernacht: talks, workshops, a demo show, blinkenlights, a big hackcenter, Karlsruhe’s yearly supply of mate and Tschunk, an epic …

Winterkongress der Digitalen Gesellschaft Schweiz

Winterkongress der Digitalen Gesellschaft Schweiz


We are pleased to invite you to the sixth Winterkongress on Friday evening, 24 February and Saturday, 25 February 2023. During two days, topics around information technology, digitalisation and their impact on our society will be covered in various lectures and workshops. The programme is online. Tickets are also available now.

The Winterkongress is the annual meeting of the Digitale Gesellschaft Schweiz: On Friday evening, 24 and Saturday, 25 February 2023, hackers, programmers, activists and interested people will come together for the sixth time in Zurich (temporarily) at the Volkshaus to …

DiVOC: Call for Angels

DiVOC: Call for Angels


Call for Angels

Dear living entities, we’re almost there: divoc 2022 will be opening it’s doors in a few days. So we’ll be needing the help of additional angels: heralds, signal angels, translation angels, welcome angels, but also stream watchers and chatroom observers. Please give us a short note under divoc@neanderfunk.de so that we know who’ll be coming to help us.

Thank you.

DiVOC: Call for Worlds

DiVOC: Call for Worlds


Let’s build bridges between our accustomed bubbles, places to exchange ideas, to meet new creatures or just to see old acquaintances again.

There’s more than enough space, and we hope that this divoc’s world will be as colourful as last year’s (at least!).

To bring some amount of cohesion to this chaos, we’ve decided to publish a styleguide on bb3-style.betalars.de

There’s also a Logo-generator on bb3.tils.pw

If you want to dock your map to our lobby, please send an email with the name of your assembly and a publicly-reachable link to a git-repository of …

DiVOC Bridging Bubbles – Call for Expertise

DiVOC Bridging Bubbles – Call for Expertise



  • The CfP has been extended until 20.3.2022
  • We’re making Putins Ukraine war the topic for a whole day (Saturday 16.04.)
  • Looking for: qualified contributions about help for refugees, OS intelligence, fact checking, open flow of information, protection against cyber attacks, hacker ethics, reconciliation
  • Contributions to other serious and fluffy topics still welcome!

We are devastated by Putins military invasion of Ukraine. We could have never wanted our theme - bridging bubbles - to be as urgent. Because we will need to build bridges between Ukrainians, Russians and the …

20. Gulaschprogrammiernacht

20. Gulaschprogrammiernacht


factory reset … done: hello, world

You have been eagerly awaiting it, a few panic-stricken inquiries have already reached us. Now the time has finally come: We want to invite you - one week earlier than usual - to the 20th Gulaschprogrammiernacht!

Save the date: 19.05. - 22.05.2022 at HfG and ZKM, Lorenzstr. 15, 76135 Karlsruhe, Baden, Baden-Wuerttemberg, Europe, Earth, Sun, α-Quadrant, Milky Way, Laniakea.

This GPN will take place under new and special conditions. Probably we will have some clarity of the actual local regulations regarding the COVID19 pandemic at some point in April …

DiVOC Bridging Bubbles – Call for Participation

DiVOC Bridging Bubbles – Call for Participation


tl;dr Talks, art projects and music for the stream of DiVOC bb3. Deadline for submissions: 13.3.2022, Event 15.–18.4.2022.

During the pandemic, the bubbles and echo chambers all of us inhabit seem to have gotten even tighter and more impermeable. We look forward to your talks about technology, science, politics and society. We’re particularly interested in talks addressing current social debates, questions of participation, accessibility, science education and science denial, and “fake news”.

And this time we would like to try out a new format: each day, we want to a have panel on a …

DiVOC Bridging Bubbles – Call for Collaboration

DiVOC Bridging Bubbles – Call for Collaboration


tl;dr A hybrid event: online and in your hackspaces. Do weird things to coax people out of their bubbles and to connect them with others. Contribute on the Wiki and IRC #divoc-bb3, to help plan this. From 15.-18. April 2022.

During the pandemic, the bubbles and echo chambers all of us inhabit seem to have gotten even tighter and more impermeable. We want to interact and merge the bubbles. DiVOC has to replace Easterhegg for the third time, but this time around we hope that the situation allows for small groups to do things together in person. So let’s use the chance to network the …

Call for Interpreters: translate #rC3!


If you are multilingual and fluent in German, English and maybe other languages, please consider joining the translation team.

We want to interpret ALL talks in the two main channels and content from other channels too, live and in real time. Our work is transmitted live in the streams, and recordings are published on CCC sites and YouTube. For each event we have two channels for interpreted content. In the first, German talks are interpreted into English, and vice versa. A second translation channel translates into languages other than English or German – what we do there depends on …

Call for interpreters: translate 36C3!


Heading for Congress, unsure what to do there, interested in applying your impressive language skills? If you are multilingual and fluent in German, English and maybe other languages, please consider joining the translation team.

We interpret ALL talks in the five main halls live and in real-time. German talks are interpreted into English, and vice versa. Our work is transmitted live in the lecture halls, streamed to the Internet, and recordings are published on CCC sites and YouTube. A second translation channel will be operated in the same way.

That is a lot of material to translate and in …

Meet the 36C3 track team “Resilience and Sustainability”


We’re 36C3’s Resilience and Sustainability content team and want to show you just our bit of work that helped making this year’s Fahrplan as amazing as it has turned out.

Our team consists of hackers and scientists, tinkerers and PhDs and was formed for 34C3 when we felt that the conference was developing a blind spot between complete destruction of all the IT things and the fascinations for the resulting apocalypse. We wanted to give a stage to new and shiny useful technology for a better and more resilient world – with actual prototypes!

This year’s motto “resource exhaustion” added a …

36C3: Tickets & Presale

36C3: Tickets & Presale


It’s that time of the year again – we’re opening the presale for this year’s Chaos Communication Congress!

As in the last years, there will be two phases, with the first one starting on 2019-10-21. During the first phase, we will invite the core of our community to participate in the presale. It will end as soon as no more tickets are left in the pool for this phase, but by 2019-11-07 at the latest.

During the second phase we’ll open the presale to everybody on three dates. These dates are:

  • 2019-11-08 12:00 CET
  • 2019-11-10 17:00 CET
  • 2019-11-21 21:00 CET

Usually tickets are gone very fast on …

Wir sind in der Natur, deal with it

Wir sind in der Natur, deal with it


Hello camp visitors,

there is general camp planning going on for several weeks so far. Now we need information in terms of your villages in order to do concrete campsite planning. If you want to create some big stuff we need to know. You can find the contact details below in this post.
For your orientation we gathered some facts that are clear so far:

The watersystem we build up for the camp is limited in its capacity and unfortunately won’t be very high due to local supply limitation. This means that we need to watch our water consumption a little bit. From the overall capacity we need …

Call for Interpreters: translate 35C3!


If you are multilingual and fluent in German, English and maybe other languages, please consider joining the translation team.

We interpret ALL talks in the five main halls live and in real-time. German talks are interpreted into English, and vice versa. Our work is transmitted live in the lecture halls, streamed to the Internet?*, and recordings are published on CCC sites and YouTube. A second translation channel will be operated in the same way.

That is a lot of material to translate and in order to succeed, we need YOU. With the second channel, you have the chance to contribute in an even …

Press accreditation to #35C3

Press accreditation to #35C3


As you might have noticed by now, the 35th installment of Chaos Communication Congress titled „Refreshing Memories“ will open doors in Leipzig, Germany, December 27-30th, 2018.

We welcome members of the press on grounds and would kindly ask you to request prior press accreditation. To do so, please send your name and the media you will be reporting for via email to press-accreditation@cccv.de. If you plan to take pictures or record videos as part of you reporting, that’s no problem in general, but accreditation is mandatory in that case. Please add a line telling us what your plans are.

Be …

Translations at 34C3


TL;DR: Just like in previous years, a team of translation angels will be on hand to whisper simultaneous interpretations of all talks at 34C3 in your ear, starting right on day one. All German talks will be translated to English, and all English talks to German. There is a second translation stream in all four locations that we will use for various target languages – catch the heralds’ announcements for details. To listen to the translations, you will need a device with either a web browser, a generic audio stream player (such as VLC), or a Mumble client (“work in progress”). We cannot provide …

tu wat – GSM and UMTS will be ready


Good news everybody: There will be GSM at 34c3! We even have 5000 plain
white SIM cards available which will be distributed by the POC again,
for a small fee of 2€ per card. SIM cards from previous events will work
as well.

The GSM network will work on 1800 MHz (DCS-1800), so it should work with
all European and quad band phones.

Additionally to the GSM network, there will also be a UMTS (3G) network
on 850 MHz (Band 5). These frequencies are very common in US phones and
should also work a lot of modern high-end LTE (4G) phones. If you want
to be sure, please look it up for your specific …

Call for Interpreters: translate 34C3!


If you are multilingual and fluent in German and English, please consider joining the translation team.

We interpret ALL talks in the four main halls live. German talks are interpreted into English, and vice versa. Our work is transmitted live in the lecture halls, streamed to the Internet, and recordings are published on CCC sites and YouTube. Also, like last year, we will be having a second translation channel in the two largest halls (Saal A & B) transmitted the same way.

That is a lot of stuff to translate, and for that we need YOU. At Saal A & B, you have the chance to contribute …

Be a part of 34C3: Become an Angel in our System!

Be a part of 34C3: Become an Angel in our System!


If you asked yourself: How can a chaotic hacker event like the Chaos Communication Congress run so smoothly for so many years when nobody gets paid for anything? We would like to explain and also ask for your help.

We call all our volunteers „Angels“. They normally carry a badge, and they are the backbone of everything. They are cleaning, filling the stomachs, providing high quality videos, and answering your questions all day long.

Last year more than 2.500 Angels helped to run the Congress with 12.500 visitors. The number of participants who register as Angels has grown over the years. And …

Speakers: please support the translations, send us your slides!


If you’ll be giving a talk at 33C3 in Hamburg, you should know that your talk will be simultaneously translated from English to German (or vice versa) by our team of volunteers. The only exception is talks where we feel that a translation is likely not to do it justice, like plays or performances.

For the quality of the translations it helps a lot if we can prepare a glossary for each talk. It would be awesome if you could send us any material that may help us do that, such as presentation slides or a manuscript. We’ll will not share these outside our team of volunteers.

If you have any …

Translations at 33C3


Listen to the simultaneous interpretations of all German-language talks with a DECT phone. Read more details below or short information in the Wiki.

It always happens: there’s that one brilliant talk by a team of hackers who built a wooden self-driving car with COBOL-based firmware on a Raspberry Pi. You’re about to head all the way out to Hall G, you only re-check the schedule to make sure that it really is there – damn, what’s that? It turns out the talk is in German and now you won’t be able to understand a word of it. “If only I had a babelfish,” you think to yourself as you redirect your …

Call for Interpreters: translate 33C3!


If you are multilingual and fluent in German and English, please consider joining the translation team.

We interpret ALL THE talks in the four main halls live. German talks are interpreted into English, and vice versa. Our work is transmitted via the internal phone network, streamed to the Internet, and recordings are published on CCC sites and YouTube. Also, this year we are expanding: for the two large halls (Saal 1 & 2) we have a second translations channel that will be broadcast in the same way.

That is a lot of stuff to translate, and for that we need YOU. At Saal 1 & 2, you have …

Call for Subtitles


As you might know, during 32c3 the Subtitles Angels created real-time subtitles for all the talks which took place in Hall 1 and 2. These allowed hearing impaired visitors to follow the talks, and also provided assistance to the non-native German or English speakers.

cch outside

Foto: CC public domain zero 1.0 by Sanpi via flickr

As the last recordings are being released, the task of creating subtitles for all recording has …

Simultaneous translations at 31C3


_31C3 is getting closer, and the translation team is once again at the ready to translate all German talks into English, and also a selection of English talks into German.

You can listen in on the streams by either selecting the appropriate stream, or by changing the stream audio channel (if your player allows). If you are on the Eventphone DECT network, you can dial in to various streams: 8011 for Saal 1, 8012 for Saal 2, 8014 for Saal G, and 8016 for Saal 6.

Call for translators

If you are multilingual and fluent in German and English, please consider joining the translation team. Simply …

Assemblies at 31C3


Assemblies are categorized by their topics this year, based on our experience and the info you gave in the form for the orga. We want this to be a further step towards decentralization of the organisation of the Congress.

Assemblies won’t get specific tables assigned, instead they form clusters with other assemblies. Space is assigned to the clusters. This means that you have to coordinate with the other Assemblies in your cluster, agreeing who gets which tables of the allocated space. At Congress you will find a stack of assembly signs in your cluster area and it’s up to you how you spread …

Welcome to the Hackerschnitzelcloud at 31C3!


Symbolbild Hackerschnitzelcloud

There will be a new, even better version of last year’s famous game: The Hackerschnitzelcloud. And there will be not just one game, but many, hunting through the CCH.

The Hackerschnitzelcloud is a magic platform for scavenger hunts. You can submit riddles and missions of all degrees of difficulty and shape them into mind-blowing games playable on mobile phones. You can submit single puzzles or …

The 31C3 Wiki is online: Get ready and contribute!


Nearly exactly a year back we also went public with the conference website: our wiki, that serves as the main hub for the whole community driven and decentral approach of running the congress. We are using again some semantic forms to gather the various activities provided by all of you. Thanks that we all together make this happen!

So please go ahead and plan your travel and accommodation, check out the FAQ for an overview on all the information provided and you might also wanna have a look at the how-to-survive-guide.

Just like last year, our venue will be the CCH in Hamburg. and it will be …

Capture the Flag


Dear Congress Visitors!

You’re tired of running around the Congress on the Schnitzeljagd (sounds like it’s fun!) or didn’t get a place? You’re like knocking your head on problems? Then we might offer something interesting for you!

Grab a few friends and join our capture the flag competition. These so called CTFs are hacking competitions in which participants solve various challenges – all based around gaining access to remote machines by exploiting vulnerable binaries, solving mathematical problems and completing various other tasks. This CTF will be run in “Jeopardy” style, i.e. challenges …

Chaospatinnen – Mentoring for people visiting the Congress for the first time #30C3


To all those interested in participating at the Congress for the first time

You are interested in technology, computers or net politics? However, you doubt whether you would fit into the Chaos Communication Congress, since you are neither a programmer nor an experienced hacker? But yet, you would love to learn about hacking, soldering, encryption, lockpicking or robots? 

Then you are more than welcome at the Chaos Communication Congress! We are convinced that this is just the right place for you and would like to encourage you to attend 30C3. Therefore we founded the Chaos Mentors. Feel free …

The 30C3 wiki is online: Travel, venue and accommodation information published


It’s getting colder outside, and the summer is long gone. There are only a few months left before the next congress starts. So for us, it is time for us to start preparing congress and for you it might be the time to start planning your trip. To assist you with your planning, there is the congress wiki!.

For now its focus is providing information for your personal preparation:

SIGINT 2013: Call for Participation


July 5th-7th, KOMED im Mediapark, Cologne, Germany



SIGINT is an annual hacker conference organized by the Chaos Computer Club. It features talks covering both technical and social aspects of our digital society.

VOLUNTEERS For SIGINT to be as great as always, we need your help. First and foremost, we need eager volunteers to help on-site with the intricate details of organizing a conference for hundreds of people. Please register as a volunteer as soon as we have the registration online.

ARTS AND PROJECTS Asides from helping us having everything run smoothly, we’d …

29C3 Party Mode


After PartyWe already told you about talks, workshops and assemblies at 29C3, but it seems we didn’t talk about parties by now. So it’s about time to do so.

On location we will have two main spots. There will be a tent in front of CCH with DJs and live sets. Music will be on from 4 pm to 6 am every day. Since smoking won’t be allowed at all inside CCH the tent …

Online Ticket Sale is Closing Soon


If you want to buy a ticket from our online ticket sale, do it now!

**We’ll close on  December 10th 2012, 23:59:59 CET. **

We’re doing this in order to grant each of you 2 weeks for making the payment. Probably there will be tickets for sale on site on 29C3, but be warned – we do not promise yet.

Finish your assembly until Sunday!


The congress is coming closer. The next stage will be the placement of the assemblies. So please make sure that you have set up your assembly nicely until Sunday, 2nd of December:

  • complete all the information in the form, so everyone can get an overview of your assembly
  • in the “free text” field you can add pictures and other formats as well. Give an impression of your projects, the whole assembly and the people behind it. The “free text” will be the body of your page.
  • Make it clear if you’re planning workshops on site. If so, please update the information about them.

Workshops – and all other events besides the main talks


Congress is made by you! Please add your workshop. A “workshop” is just something, that happens at a special time and place, but not in one of the big halls.

As you may have read in the blogpost on assemblies this congress will be even more community driven than it used to be. One step towards this is allowing you to hold your own sessions on whatever topic you think is important. We kindly ask you to prepare “workshops”.

That does not mean, that it has to be something with hands-on and making – sure it could be! But workshops can also be a gathering of a project group or discussing a …

Order congress wear until Sunday!


This is a kind reminder to all of you out there who haven’t ordered tickets and congress wear yet: Now is the time to do it!

We need to order the clothes soon. Pre-ordering them in the online ticket system will only be possible until Sunday, November 18th. The ticket-presale however will stay online.

Please go to presale.events.ccc.de and preorder your shirt, hoodie or zipper.

More mock ups of the congress wear are available in the congress wiki:

Zipper Women Navy

CCH: A brief introduction

CCH: A brief introduction


The Congress Center Hamburg is located just a few minutes away from the Dammtor train station which is a major transport hub of northern Germany and also within the public transport network of Hamburg. Light rail is called S-Bahn and in the Dammtor station you will find the lines S11, S21 and S31. The subway station is called »Stephansplatz« and is on the U1 line. The “Dammtor” station is also a major train station for long distance trains (e.g. ICEs) to Scandinavia, Berlin, Hannover and further into Europe.

Close to the CCH are areas like Schanzenviertel, Alster, Reeperbahn, Jungfernstieg and …



We want you to bring more of that Camp feeling to the Congress! The event suffered from stagnation over the past few years. This time you can shape the conference a lot more than you already did in Berlin. To start that transformation, there’ll be a new thing called Assemblies. Ideally, these should work much like Villages on the Camp, but not exactly the same way.

Up to 28C3 last year we’ve assigned seats and tables to projects that registered in the wiki beforehand. Space has been a very scarce resource, thus we had to keep a close eye on allocation. Hopefully, that will change for the …

29C3 – Tickets and Pricing


29C3 will cost us much more than standard tickets priced at 80 EUR will pay. Thus we’ll sell supporter tickets for 100 and 120 EUR. Please consider buying one of these. Help us minimize our losses and support others who can’t afford paying much more! Thanks a lot! :)

Moving the 29C3 to Hamburg will cost a lot of money. As far as we know yet, 80 EUR for a standard ticket will not cover those costs, even if a lot more people will show up at the …

Invite all the Speakers!


You know someone who could tell us interesting things at the congress? You recently read an article and thought “It would be great to hear that person speak at the congress”? But you are not sure if he/she/it knows about it? Then just tell them!

There are many ways to do that, the easiest one would be sending an email like this:

“Hey [name], I like your [article /talk/project/something] and I would love to see you at the 29th Chaos Communication Congress. You can find the Call for Participation here: [link]. If you need any help with the submission form I would be happy to assist you. Be aware …

28C3 – Can’t Afford to Pay the Full Price?


Since we forgot to mention it in the first place: Yes, we do have a 28c3-friends request address for people who can’t afford to pay the full ticket price. We’ve added information to http://events.ccc.de/congress/2011/wiki/Tickets:

If you or someone you know can’t afford to pay the full price for a ticket, send a mail to 28c3-friends@cccv.de. Please tell us, why this person can’t pay the full price and why he or she should take part in 28C3 nevertheless. Usually we agree on some affordable price. But please keep in mind that tickets are already very cheap and that we can handle only a limited …

28C3 Tickets


In few words.


  • Sunday, November 06, 10:00PM CET (UTC+1) (½ of all tickets)
  • Monday, November 14, 16:00PM CET (UTC+1) (¼ of all tickets)
  • Tuesday, November 29, 10:00AM CET (UTC+1) (¼ of all tickets)


Standard EUR 80,–
Members CCC e.V. EUR 50,–
Up-and-Coming Hackers EUR 25,– (born after 1993-12-26)
Supporters EUR 140,-
Business EUR 280,- (excl. VAT)



Camp Tickets Downloadable Now


Finally we’re done with generating all ticket PDFs! :)

If you’ve ordered a Camp ticket in the online sales system and also payed it, you can download your ticket from https://presale.events.ccc.de now.

For those of you, who registered an email address we’ll additionally send the PDFs by mail.

Please print out your tickets and bring them to the Camp! You need them in order to get your wrist bands.

Ticket Shop Closes Soon


The online shop for Camp tickets will close at 2011/07/20, two days from now.

If you didn’t buy a ticket yet, you should better go to our online shop now and buy one.

Since we don’t know, how many tickets we’ll still have left after online sales, we can’t promise there will be ticket sales at the door. Probably there will be, but if you want to be sure, better buy your tickets now!

mrmcdX: Call for participation


From September, 2nd to September 4th, 2011, the 10th MetaRheinMain ChaosDays (short: mrmcdX) will take place. They are organized by Chaos Darmstadt, Chaos inKL., cccffm, CCC Mainz, CCC Mannheim, as well as oqlt.

The congress is all about hacking (both technical and social aspects) and now being held for the tenth time. The location will be (like in the last few years) the Piloty building of Darmstadt University of Technology (49.877491° N, 8.654536° E). For three days, talks, workshops, discussions and a hackcenter will be offered. Furthermore, you will not need to starve as there’ll be both …

Camp 2011: Rent a Tent – Last Orders


You’d like to rent a big tent, chairs, and tables for the Camp and did not tell us yet? Then you need to hurry up. We accept orders from you only until June 9th, and that’s tomorrow. For more details see the Rent a Tent page in the wiki.

Camp 2011: Ticket Shop Opened


We’re selling tickets for the Camp now. For more information, please read the Tickets page in our wiki.

Although the advance sale will be available until July 20th 2011, please order your tickets early. That helps us, because it tells us something about the number of participants and thus enables us to scale infrastructure to your needs.

May 7th: Camp 2011 – Field Day


We invite everybody to join us for a public visit to the location of the Chaos Communication Camp 2011 at Luftfahrtmuseum Finowfurt 1. Everybody who wants to do a project, put up a really big tent, build a village or do anything special in one way or the other should come.

The visit takes places at Saturday, May 7th, 2011 at 14:00h CEST. We will spend around two to three hours at the site depending on interest. Be careful to be on time as we won’t explain things twice.

If you plan to come, please drop your name in the wiki [2]. There you will also find driving instructions, aerial photographs …

Camp 2011 Needs Your Help


Preparations for this year’s Chaos Communication Camp have started.

If you don’t know about the Camp in general have a look at the 2007, 2003, and 1999 web sites. You should also watch these great videos in order to get a first impression: Camp 2007 and Camp 2003

Actually, we’ve been working on Chaos Communication Camp 2011 – Project Flow Control – for quite some time, but finally there is a web site now. Since we’re a bit late already, we really need your support.

First and foremost we need your help in distributing the Call for Participation and the Call for a Space Program of the Hacker …

Camp 2011 will happen


After receiving some concerned inquiries we want to state again:

Yes, the Chaos Communication Camp 2011 will take place. It will be from August 10th thru August 14th 2011 in Finowfurt near Berlin. There will be enough tickets for everybody. You may start your travel preparations by booking flights, applying for visas, charging your transcontinental teleporter’s capacitors, etc. We will be there.

Crypto Talk at 27C3: New Key Recovery Attacks on RC4/WEP, Day 4, 17:15, Saal 2


The RC4 Stream Cipher could be the most common stream cipher used on the Internet. RC4 is the only Stream Cipher which is standardized for the SSL/TLS protocol, it is also used for WEP and WPA protected wireless networks. Initially, RC4 was designed to be a closed source commercial product, with the core algorithm kept secret. In 1994, the source code for RC4 was posted on the internet and the algorithm could be analyzed.

The first attack on RC4 was published by Fluhrer, Mantin, and Shamir in 2001. The attack is very effective, but can only be used against certain keys starting with a special …

Crypto Talk at 27C3: FrozenCache – Mitigating cold-boot attacks for Full-Disk-Encryption software, Day 3, 23:00, Saal 2


Cold BootsAs a general attack against encryption software on a computer, the cold boot attack was presented at 25C3. To encrypt data on a PC, many programs store the encryption key in RAM. The key is usually derived from a password or loaded from the hard disk where it is protected by a password too. The key resists as least as long as the encryption operation take in RAM. For many applications like Full-Disk-Encryption or Email Signatures, it is convenient to keep the key permanently in RAM, once it has been loaded, so that the user doesn’t need to enter his password again and again.

To protect the key …

Crypto Talk at 27C3: Is the SSLiverse a safe place? Day 2, 16:00, Saal 2


SSL/TLS is the standard when it comes to securing HTTP traffic on the internet. The authenticity of a web server is usually secured using a X.509 certificate digitally signed by a trusted certification authority (CA). All major web browsers come with a list of CAs preinstalled they assume as trustworthy. Every website can be signed by any of these CAs, so no web browser would show a warning, if www.dod.gov would be signed by a Chinese certification authority or the Deutsche Telekom.

ObservatoryTo examine the usage of X.509 certificates for SSL/TLS, the EFF installed a SSL Observatory:

The SSL …

Mission Angels: How to Connect to the 27c3


Day0 - II

Thanks to the Mission Angels, you’ll be able to interact with the talks going on at the 27c3 and more! While you watch the streams from one of many Peace Missions throughout the world, Mission Angels will be monitoring IRC and Twitter for questions to be asked in selected events during the 27c3.

To ask a question in a session on IRC join #27c3-Saal-1, #27c3-Saal-2, #27c3-Saal-3 on Freenode or use the corresponding terms as a Twitter hashtag to put your question to the session.

If you’re in a Peace Mission, you can even sign up to give a Lightning Talk!

See the Peace Missions entry on the 27c3 …

Crypto Talk at 27C3: Automatic Identification of Cryptographic Primitives in Software, Day1, 16:00, Saal 3


FingerprintMany applications, including closed source applications like malware or DRM-enabled multimedia players (you might consider them as malware too) use cryptography. When analyzing these applications, a first step is the identification and localization of the cryptographic building blocks (cryptographic primitives, for example AES, DES, RSA…) in the applications. When these blocks have been localized, the input and output of the cryptographic primitives and the key management can be observed and the application can be analyzed further. Fortunately, many cryptographic algorithms use special …

The fairydust has landed at the 27c3

The fairydust has landed at the 27c3


We wish you a very merry festival of fixing the WiFi at your family’s home!

Over the past few days, the 27c3 team has been hard at work with the initial preparations for the 27c3.  At the bcc, several tons of networking hardware have arrived, the network backbone is up and running and the hackcenter decor is taking shape.  In far away lands, many new Peace Missions have been announced and there’s always room for more.

Peaceful journeys!  We’ll see you on the 27th!

Bring Your DVB-T receivers


At 27C3 all lectures will be broadcast via DVB-T and reception will be possible in and around the bcc. Visitors can watch via TV if they want avoid overcrowded lecture rooms.

To receive the signal any PC with DVB-T-USB-Stick, TV set with DVB-T tuner or cellphone with DVB-T-function will work. We will publish all needed configuration files and a list of working and non-working receivers in the wiki.

The Bundesnetzagentur (German regulation body) has allocated channel 22 (482MHz) for us, where we will transmit with 6 watts ERP.

The last time DVB-T was available on Chaos Congress was at 24C3 …

Downloadable tickets are available in your presale-account


Downloadable tickets are available in your presale-account. NOW.

As you already may have noticed, the availability of your tickets has been delayed.. ahem.. just a little bit. But here’s the good news:

Your 27C3-tickets are available for download now!
Please log in to https://presale.events.ccc.de , download the pdf, print it out, and make sure to bring it with you to the cash desk.

We wish you a lot of fun at the 27C3!

All-Day-Tickets sold out


On Saturday the last batch of 27C3 tickets were sold. There are no all-day-passes left.
We will make the actual tickets available to you via your presale account on December, 13th shortly. The tickets will contain all relevant billing data and can be used as invoice.

Please print your ticket and bring it to the cashdesk.

Those who did not get a ticket during presale, please do not travel to the congress. There are no all-day-passes available at the cashdesk. Our door policy is strict: Only visitors with valid ticket codes will be granted entrance.

As of day 2 (2010-12-28) a few day-passes will …

Yes, you can still get a ticket to the 27C3


If you don’t have a ticket to the 27c3, but want one:

  1. Create an account on the presale system NOW.
  2. Come back on Saturday, December 4 at 16:00 CET (That’s 10 AM Eastern USA/7 AM Pacific USA).
  3. Reserve and purchase one of the tickets that will (likely) be released at that time.

If you’re a member of the press corps who wishes to purchase a press ticket, e-mail presse (at) ccc.de with the details of your assignment and coverage plans. Press people also have to pay for their tickets.

(More information in German here)

No more group orders available


We already got requests for 403 group tickets in 38 different orders. The majority are groups from foreign countries which want to visit the 27C3. We are really pleased to welcome you to the Congress!

On the other hand these group orders decrease the number of available tickets for individual visitors. Thus we concluded to end the group orders now. All group orders that have been requested by now can still buy their tickets, but we won’t raise the ticket limit for any more accounts. Thanks for your understanding.

Performance test successfully survived!


As expected, the pre-sale-system has survived the performance check immediately to the release time.

The rush for the Pre-sale is still enormously. The tickets from the first Quota will be sold out in no time.

But: No Panic.

As announced, there will be a second, much larger, quota at the beginning of November. So anyone who had no luck this time get a new chance at the second quota.

The created accounts are also valid in the second quota.

The quota for our volunteers (Angels) from last year, dubbed ‘the golden token’, will be independent of the other “normal” quota.

For all risks and side …

How to survive the pre-sale


In order to avoid any confusion, here is the short and sweet version of everything there is to know about the 27C3 ticket presale.

  • The System will be available by today (10.10.10) at exactly 10:10am Berlin Time (08:10 UTC) via https://presale.events.ccc.de/ – if this doesn’t work, try instead.
  • The first batch of 800 Tickets will be accessible by then. The second (and biggest) batch will start after we released the first version of the schedule (the Fahrplan) in the beginning of November. More batches will be announced after those. Everyone who did not get one of the …

ICE 2342 to 27c3 will be delayed by a few days.


As may you have noticed, the start of ticket sales for the 27th Chaos Communication Congress is still delayed.

We understand your annoyance. Rest assured, it annoys us just as much.

Anyone of you ever involved in a project knows: Something always comes amiss, there is always some unexpected problem pushing the release date back into the future. Project “27c3” unfortunately is not an exception to this. Especially since all the work – including the presale system – is being done by volunteers, most of them with a regular day job.

Behind the scenes our coding and hacking mill is spinning, while …

Tickets for the 27th Chaos Communication Congress


While the Call of Participation for the 27. Chaos Communication Congress (27C3) “We come in peace” lasts until 9th October 2010, we would like to make the travel scheduling for the willing people a bit easier. This year a Presale will be available.

Like it was impressively shown last year, the fluctuations in the rush on the Congress aren’t measurable in any way.
The bcc was completely packed, and all tickets sold. The principle of hope didn’t work out, and the displeasure by the people which traveled far and got rejected, or didn’t get a clear announcement relating to the …