The congress features a variety of lectures and workshops on technical and political issues related to security, cryptography, privacy and online freedom of speech.

[4][5] From 2017 to 2019 it has taken place at the Trade Fair Grounds in Leipzig, since the Hamburg venue (CCH) was closed for renovation in 2017[6] and the existing space was not enough for the growing congress.

[7] 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.

[8] 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.

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).