Chaos Computer Club

The Chaos Computer Club (CCC) is Europe's largest association of hackers, with 7,700 registered members. Founded in 1981, the association is incorporated as an eingetragener Verein in Germany, with local chapters in various cities in Germany and the surrounding countries, particularly where there are German-speaking communities. Since 1985, some chapters in Switzerland have organized an independent sister association called the Chaos Computer Club Schweiz (CCC-CH) instead.