Chaos Communication Congress
| Chaos Communication Congress | |
|---|---|
| Genre | Hacker con |
| Frequency | Annually, 27–30 December |
| Venue | Congress Center Hamburg |
| Location | Hamburg |
| Country | Germany |
| Inaugurated | 1984 |
| Most recent | 2025 (39C3) |
| Next event | 2026 (40C3) |
| Organised by | Chaos Computer Club |
| Website | events |
| Part of a series on |
| Computer hacking |
|---|
The Chaos Communication Congress is an annual hacker 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. It has taken place regularly at the end of the year since 1984, with the current date and duration (27–30 December) established in 2005. It is considered one of the largest events of its kind, alongside DEF CON in Las Vegas.