From: https://insomnihack.ch

Insomni’hack is a Swiss cybersecurity conference and hacking contest, founded and organized by Orange Cyberdefense Switzerland (formerly SCRT SA) since 2008 in Lausanne, Switzerland. What started as a small-scale hacking contest has grown into one of the largest cybersecurity events in Switzerland and neighbouring Europe, as well as one of the largest on-site CTFs worldwide, gathering a wide spectrum of cybersecurity professionals and enthusiasts from all over the globe.