Markus Drenger is an IT security expert and currently works as a consultant at HI Solutions AG. Previously, he worked as a consultant for network policy for the Bündnis 90/ Die Grünen parliamentary group in the German Bundestag. He is very active in various communities around the CCC, where he is an advocate for open data and has worked, among other things, to analyze the risks of the electronic lawyer’s mailbox and the electronic patient file.