Chaos Communication Congress

The congress is held in Germany. It started in 1984 in Hamburg, moved to Berlin in 1998, and back to Hamburg in 2012,^{[† 2]} having exceeded the capacity of the Berlin venue with more than 4500 attendees. Since then, it attracts an increasing number of people: around 6600 attendees in 2012, over 13000 in 2015,^[1] and more than 15000 in 2017.^[2][3] From 2017 to 2019, it took place at the Trade Fair Grounds in Leipzig, since the Hamburg venue (CCH) was closed for renovation in 2017^{[† 3]} and the existing space was not enough for the growing congress. The congress moved back to Hamburg in 2023, after the renovation of CCH was finished.

A large range of speakers are featured. The event is organized by volunteers called Chaos Angels.^[4] The non-members entry fee for four days was €100 in 2016, and was raised to €120 in 2018 to include a public transport ticket for the Leipzig area.^{[† 4]}

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.^{[† 5]}

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.

2020 was the first year where the Congress did not take place at a physical location due to the COVID-19 pandemic, giving way to the first Remote Chaos Experience (rC3).^{[† 6][† 7]}

The Chaos Computer Club announced to return to the now newly renovated Congress Center Hamburg for the 37th edition of the Chaos Communication Congress. The announcement confirms the usual date of 27-30 December, notably omitting the year it will be held.^{[† 8]} On 18 October 2022, they confirmed that the congress will indeed not be held in 2022.^{[† 9]} On 6 October 2023, the CCC announced that 37C3 will take place again on the usual dates in 2023.^{[† 10]}

Timeline

More information Year, Motto ...

Year	Motto	Short name	Visitors	Venue location
1984	"CCC'84 nach Orion'64"	—N/a	—N/a	Eidelstedter Bürgerhaus [de] in Hamburg, Germany
1985	"Du Darfst"	—N/a	—N/a
1986	"Damit Sie auch morgen noch kraftvoll zubyten können"	—N/a	—N/a
1987	"Offene Netze – Jetzt!"	—N/a	—N/a
1988	"ich glaub' es hackt"	—N/a	—N/a
1989	"Offene Grenzen: Cocomed zuhauf"	—N/a	—N/a
1990	(No motto)	—N/a	—N/a
1991	"Per Anhalter durch die Netze"	—N/a	—N/a
1992	"Es liegt was in der Luft"	—N/a	—N/a
1993	"Ten years after Orwell"	—N/a	—N/a
1994	"Internet im Kinderzimmer – Big business is watching you?!"	—N/a	—N/a	Bikini-Haus [de] in Berlin, Germany
1995	"Pretty Good Piracy – verdaten und verkauft"	—N/a	—N/a	Eidelstedter Bürgerhaus in Hamburg, Germany
1996	"Der futurologische Congress – Leben nach der Internetdepression"	—N/a	—N/a
1997	"Nichts ist wahr. Alles ist erlaubt."	—N/a	—N/a
1998	"All Rights Reversed"	—N/a	2300[5]	Haus am Köllnischen Park [de] in Berlin, Germany
1999	(No motto)	16C3[† 11]	—N/a
2000	"Explicit Lyrics"	17C3	—N/a
2001	"Hacking Is Not A Crime"	18C3	—N/a
2002	"Out Of Order"	19C3	3000[6]
2003	"Not A Number"	20C3 NaN	2500[7]	Berliner Congress Center in Berlin, Germany[† 12]
2004	"The Usual Suspects"	21C3	3500[8]
2005	"Private Investigations"[† 13]	22C3	3000[9]
2006	"Who can you trust?"	23C3	4200[10]
2007	"Volldampf voraus!"	24C3	4013[11]
2008	"Nothing To Hide!"	25C3	4200[12]
2009	"Here Be Dragons"	26C3	9000[12] (including streaming viewers, unlike all other numbers in this table)
2010	"We come in peace"	27C3	4000[13]
2011	"Behind enemy lines"	28C3	3000[14]
2012	"Not my department"	29C3	6500[15]	Congress Center Hamburg in Hamburg, Germany
2013	(No motto)[a]	30C3	9000[16]
2014	"A New Dawn"	31C3	12000[17]
2015	"Gated Communities"	32C3	13000[18]
2016	"Works for me"	33C3	12000[19]
2017	"tuwat"	34C3	15000[20]	Leipziger Messe in Leipzig, Germany[† 3][† 14]
2018	"Refreshing memories"[† 15][† 16][† 17]	35C3	16000[† 18]
2019	"Resource Exhaustion"[† 19]	36C3	17000
2020	"remote Chaos Experience"[† 20]	rC3	—N/a	Online
2021	"NOWHERE"[† 21]	rC3 2021	—N/a
2022	Cancelled due to effects of the COVID-19 pandemic[† 22]
2023[† 23]	"Unlocked"[† 24]	37C3	14500[† 25]	Congress Center Hamburg in Hamburg, Germany
2024	"Illegal Instructions"[† 26]	38C3	15000[† 27]
2025	"Power Cycles"[† 28]	39C3	16000[21]

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