Der Einsatz von Informations- und (Tele-)Kommunikationssystemen für die Wirtschaft ist durch den rapiden technologischen Fortschritt zu Beginn des 3. Jahrtausends zur allgegenwärtigen Erscheinung geworden. Unter Schlagworten wie e(lectronic)-, m(obile)-, u(biquitious)-Computing/Commerce werden...

This dissertation consists of four essays exploring risk modeling and aggregation, with a particular focus on cyber risk in the insurance context. It aims to provide appropriate answers to research questions that arise from practical challenges on both the supply and demand sides of the...

With the emergence of global digital service providers, concerns about digital oligopolies have increased, with a wide range of potentially harmful effects being discussed. One of these relates to cyber security, where it has been argued that market concentration can increase cyber risk. Such a...

Medical devices are increasingly connected, both to cyber networks and to sensors collecting data from physical stimuli. These cyber-physical systems pose a new host of deadly security risks that traditional notions of cybersecurity struggle to take into account. Previously, we could predict how...