Second Prize in German IT-Security Award 2020


With their submission “ContactGuard”, Christian Weinert, Thomas Schneider, and former ENCRYPTO master student Matthias Senker together with Daniel Kales and Christian Rechberger from TU Graz won the second prize in the 8. German IT-Security Award 2020 (60,000 EUR) among 46 submissions.

This award is given every two years by the Horst Görtz foundation for outstanding IT security innovations of great practical and market relevance. It is one of the most highly endowed awards in Germany.

ContactGuard enables practical privacy-preserving contact discovery in mobile messengers based on the paper “Mobile Private Contact Discovery at Scale” (opens in new tab) published at USENIX Security'19. More information available at

University press releases (in German):

Dr. Ing. eh. Horst Görtz and Dr. Rainer Baumgart presenting the award to Christian Weinert.
ContactGuard team: Christian Weinert, Christian Rechberger, Daniel Kales, Matthias Senker, and Thomas Schneider.