Posts Tagged ‘28c3’

Crypto Talk at 28C3: Datamining for Hackers – Encrypted Traffic Mining, Day 1, 14:00, Saal 1

Tuesday, December 27th, 2011

The first cryptography related talk at 28C3 is about data mining in encrypted data. One may assume, that encrypting your data with a good encryption scheme prevents other people from learning about it. However, this is not true, specially for network protocols, that often leak information, like who is communicating with who, and when how much data is transferred. An attacker can use these information to make assumptions about the content of the transmission.

From the abstract: Voice over IP (VoIP) has experienced a tremendous growth over the last few years and is now widely used among the population and for business purposes. The security of such VoIP systems is often assumed, creating a false sense of privacy. Stefan will present research into leakage of information from Skype, a widely used and protected VoIP application. Experiments have shown that isolated phonemes can be classified and given sentences identified. By using the dynamic time warping (DTW) algorithm, frequently used in speech processing, an accuracy of 60% can be reached. The results can be further improved by choosing specific training data and reach an accuracy of 83% under specific conditions.

I think this talk is interesting, because it can show you how much information can even be gathered from an encrypted data stream, just using some side information from the communication.

See the talk: Day 1, 14:00, Saal 1

Author: Erik Tews

Kids are welcome on the 28c3

Thursday, December 22nd, 2011

Es ist eine tolle Idee seine Kinder auf den 28c3 mitzubringen. Nicht nur, dass sie kostenfreien Eintritt haben, wenn sie elf oder jünger sind. Sondern auch das Chaos macht Schule-Projekt bietet vier Stände an, die sich speziell um die Junghacker kümmern werden.

Ein Stand wird sich speziell um sichere Kommunikation in Computernetzwerken kümmern und für alle kniffligen Fragen um das Thema Antworten parat halten.

Die anderen Stände bieten Basteltrainings um dem Nachwuchs zu helfen, auf den Grund der technischen Spielereien zu gelangen: Von Miniroboter, über elektronischem Haustier, bis zur LED-Matrix mit Spielen können die Junghacker und Haecksen auf eigene Faust, oder mit professioneller Unterstützung die Elektronen fließen lassen. Und das ebenfalls: ganz kostenfrei (… so lange unsere Bausätze reichen).

Und weil sie auf den Datenspuren so gut angekommen sind: Es wird wieder Junghackerpässe geben, um seine Erfolge zu dokumentieren.

28C3 – Bring your r0ket

Wednesday, December 21st, 2011

When packing for 28C3, don’t forget to bring your r0ket! (and a micro-USB cable!)

Among other things there will be a multiplayer tetris game on an LED wall you can play with your r0ket and new m0duls to boost your r0ket into new heights.

To access all new features of your r0ket have a look at

The update contains an improved mesh network, l0dables for interactive installations and support for the next flame generation.

Good news for those who didn’t get one on camp – or want more: Team r0ket will be selling new, slightly improved r0kets for 30 Euros and RGB flame m0dules for 10 Euros on 28C3.

They will also bring several USB missile launchers for a hardware hacking competition – the goal is to combine the missile launcher with your r0ket. If you are one of the first 100 people to publish a cool hack, you can keep the launcher for free!

For more information on the r0ket badge and current updates on where to get one during Congress see

Details on the missile launcher competition:

Pictures of the new r0ket generation:

Front of new r0ket generation Front of new r0ket generation

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

Thursday, November 3rd, 2011

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

If you or someone you know can’t afford to pay the full price for a ticket, send a mail to 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 number of such requests. So, please think twice before sending us a mail to that address.

If you want to try your luck, you still need to get a ticket in the on-line ticket sales. Just choose any ticket type and tell us the user name. If we agree on some price, we’ll edit your order afterwards. If we don’t agree, you may just not pay within 2 weeks.

Mit der Bahn ab 89,- Euro zum 28c3

Tuesday, November 1st, 2011

English Version

Die Deutsche Bahn für den Congress ein begrenztes Kontingent an verbilligten Fahrkarten zur Verfügung gestellt, welche von euch günstig erworben werden können. Der Preis ist dabei im Vergleich zum letzten Jahr sogar um 10 Euro gesunken.

Im Gegensatz zu letztem Jahr und zum Camp gibt es nicht nur zwei, sondern vier Fahrkartentypen: zuggebundene Fahrkarten (bei der Buchung muss sich für einen Zug entschieden werden) und zugungebundene Fahrkarten (Einsteigen, losfahren), das Ganze jeweils in der ersten oder zweiten Klasse, online und telefonisch buchbar.


28C3 Tickets

Monday, October 31st, 2011

Wir halten uns kurz.


  • Sonntag, 06. November, 22:00 Uhr MEZ (UTC+1) (½ aller Tickets)
  • Montag, 14. November, 16:00 Uhr MEZ (UTC+1) (¼ aller Tickets)
  • Dienstag, 29. November, 10:00 Uhr MEZ (UTC+1) (¼ aller Tickets)


Standard EUR 80,–
Mitglieder CCC e.V. EUR 50,–
Up-and-Coming Hackers EUR 25,– (geboren nach dem 26.12.1993)
Supporters EUR 140,-
Business EUR 280,- zzgl MwSt.


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)


28C3: CFP for 28th Chaos Communication Congress

Friday, September 9th, 2011

Call for Participation for 28th Chaos Communication Congress
27|28|29|30 December 2011, bcc, Berlin, Germany

The Event

The Chaos Communication Congress the annual four-day conference organized by the Chaos Computer Club (CCC) in Berlin, Germany. First held in 1984, it has since established itself as “The European Hacker Conference” attracting a diverse audience of thousands of hackers, scientists, artists, and utopists from all around the world.


In general, lectures, workshops, and projects dealing with technology, ethics, science, security, art, philosophy, politics, and culture are welcome. However, it is not mandatory for your talk to exactly match the given topics. Anything that is interesting and/or funny will be taken into consideration. We use hacking in a very broad sense of the word, but we won’t say no to excellent submissions on computer security research.

Some of the many topics we want to hear more about

– Cloud security
– Mobile Hacking and Telecommunications Security
– Privacy
– Net Neutrality and Censorship
– Copyright
– Exploitation Techniques
– Video Game Culture and Art
– Cryptography and Cryptoanalysis
– Reverse Engineering
– Forensics and Anti-Forensics
– Web Security
– Electronic Music and Literature
– Retrocomputing
– Economical Systems – think about collapsing financial markets and anonymous money transfers
– Constructivist Epistemology
– Artificial Intelligence and Robotics – machine learning, humanoid robots, RoboCup, autonomous cars
– Transportation Hacking – with electronics and bus systems
– Studies about Social Networks – e.g. how different networks are being used
– The Long Tail – crowdsourcing, crowdcasting, crowdfunding, peer to peer
– Media and Internet Technologies in education
– Cyberspace identities and gender issues
– Law Enforcement Activities and Active Countersurveillance
– Revolutions
– Hacktivism
– Handling Transparency in Governmental Affairs
– Micropayment and electronic currencies
– Transportation hacking – with electronics and bus systems
– Cooking and Baking with Club-Mate
– Fun with large datasets and visualizing data
– Social Justice on the Internet
– Media and Internet Technologies in Education
– Conspiracy Theories

Lecture Requirements

Lectures should not exceed 45 minutes plus up to 15 minutes for questions and answers. Longer time slots are possible if we feel the topic demands it (please tell us if necessary). This year, due to popular demand, we also introduce 20 minute talks. Please state the length of your presentation clearly on your submission.


Audio and video recordings of the lectures will be published online in various formats. All material will be available under the Creative Commons “Attribution-NonCommercial-NoDerivs 3.0 Germany” license
We encourage contributors to publish their work under a more liberal license; if you wish to do so, please state this with your submission.

Language of the Presentation

While the 28C3 is an international conference that aims to present lots of content in English, we would rather have a good presentation in German than a bad one in so-called Denglisch. So please be honest when judging your language skills and choose your lecture language accordingly.
Sales and marketing droids are known to vanish without any trace at the congress, please refrain from submitting company propaganda.

Travel expenses

The Chaos Communication Congress is a non-profit oriented event and speakers are not paid. However, financial help on travel expenses and accommodation is possible. It needs to be agreed upon after acceptance of the submission, though. Don’t be shy and state your requirements in the application when submitting your lecture and we’ll work something out.

Dates and Deadlines

The deadline for submission is October 11th, 2011 Midnight (23:59) UTC. Notification of acceptance will be sent by e-mail on November 20th, 2011 the latest. However, you may very well get your notification earlier than that if needed.
– October 11th, 2011 (Midnight UTC) Submission due
– November 20th, 2011 (Midnight UTC) Final notification of acceptance (or earlier)
– December 27th – 30th, 2011 Chaos Communication Congress


All proposals must be submitted online using our online lecture submission system at Please follow the instructions given there. If you have any questions regarding your submission, feel free to contact us at