Chaos Communication Congress

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31C3 in Hamburg
Audience at the keynote of Glenn Greenwald at 30C3
The 22C3 in December 2005

The Chaos Communication Congress is an annual conference organized by the Chaos Computer Club. The congress features a variety of lectures and workshops on technical and political issues related to Security, Cryptography, Privacy and online Freedom of Speech. The event takes place regularly at the end of the year since 1984, with the current date and duration (December 27–30) established in 2005. It is considered one of the largest events of this kind, alongside the DEF CON in Las Vegas.

The congress started out in 1984 in Hamburg, moved to Berlin in 1998, and back to Hamburg in 2012, having exceeded the capacity of the Berlin venue with more than 4500 attendees. Since then, the meetings in the considerably larger venue in Hamburg continue to attract an increasing number of people, around 6,600 attendees in 2012 and more than 13,000 in 2015. The 2017 congress took place at the Trade Fair Grounds in Leipzig, since the Hamburg venue is closed due to renovation.[1]

A large range of speakers are part of the scene. Organizational work is done by volunteers called Chaos Angels. The non-members entry fee for four days was 100 Euros in 2016.

An important part of the congress are the assemblies, semi-open spaces with clusters of tables and internet connections for groups and individuals to collaborate and socialize in projects, workshops, and hands-on talks. These assembly spaces, introduced at the 2012 meeting, combine the hack center project space and distributed group spaces of former years.[2]

From 1997 to 2004 the congress also hosted the annual German Lockpicking Championships. 2005 was the first year the Congress lasted four days instead of three and lacked the German Lockpicking Championships.


Starting with the 16th congress in 1999, congresses are abbreviated C3 and prefixed with the congress number (e.g. 30C3 for the 30th congress). Most have been subtitled with a motto reflecting the zeitgeist and congress topics.

No. Year Motto short venue place
1 1984 CCC'84 nach Orion'64 Eidelstedter Bürgerhaus in Hamburg, Germany
2 1985 Du Darfst
3 1986 Damit Sie auch morgen noch kraftvoll zubyten können
4 1987 Offene Netze – Jetzt!
5 1988 ich glaub' es hackt
6 1989 Offene Grenzen: Cocomed zuhauf
7 1990 (no motto)
8 1991 Per Anhalter durch die Netze
9 1992 Es liegt was in der Luft
10 1993 Ten years after Orwell
11 1994 Internet im Kinderzimmer – Big business is watching you?! Bikini-Haus in Berlin, Germany
12 1995 Pretty Good Piracy – verdaten und verkauft Eidelstedter Bürgerhaus in Hamburg, Germany
13 1996 Der futurologische Congress – Leben nach der Internetdepression
14 1997 Nichts ist wahr. Alles ist erlaubt.
15 1998 All Rights Reversed Haus am Köllnischen Park in Berlin, Germany
16 1999 (no motto) 16C3
17 2000 Explicit Lyrics 17C3
18 2001 Hacking Is Not A Crime 18C3
19 2002 Out Of Order 19C3
20 2003 Not A Number 20C3
Berliner Congress Center in Berlin, Germany[3]
21 2004 The Usual Suspects 21C3
22 2005 Private Investigations 22C3
23 2006 Who can you trust? 23C3
24 2007 Volldampf voraus! 24C3
25 2008 Nothing To Hide! 25C3
26 2009 Here Be Dragons 26C3
27 2010 We come in peace 27C3
28 2011 Behind enemy lines 28C3
29 2012 Not my department 29C3 Congress Center Hamburg in Hamburg, Germany
30 2013 (no motto) [why? 1] 30C3
31 2014 A New Dawn 31C3
32 2015 Gated Communities 32C3
33 2016 Works for me 33C3
34 2017 tuwat 34C3 Congress Center Leipzig in Leipzig, Germany [1]
35 2018 tba 35C3 Congress Center Leipzig in Leipzig, Germany [4]
  1. ^ In the opening talk of the 30C3 (2013), Tim Pritlove stated that there was no motto because everyone was speechless after what happened that year: the Snowden revelations.


See also[edit]


  1. ^ a b "CCC | Chaos Communication Congress is moving to Leipzig". Retrieved 2017-05-13.
  2. ^ Assemblies at 29C3
  3. ^ "Welcome - 27C3 public wiki". 2010-12-21. Archived from the original on 2012-07-17. Retrieved 2012-07-11.
  4. ^ "CCC | Chaos Communication Congress again in Leipzig". Retrieved 2018-09-03.

External links[edit]