This paper extends Savage's subjective approach to probability and utility from decision problems under exogenous uncertainty to choice in strategic environments. Interactive uncertainty is modeled both explicitly, using hierarchies of preference relations, the analogue of beliefs hierarchies,...

Cyber attacks can impair banks operations and precipitate bank runs. When digital infrastructure is shared, banks defend themselves by investing in cybersecurity but can free-ride on the security measures of others. Ex ante free-riding by banks interacts with the ex post coordination frictions...

Malicious activity in cyberspace comprises numerous forms, often resulting in significant consequences for the victims. According to the actual circumstances, a number of measures can be considered in response to such cases. In order to bring the perpetrators to justice, it is necessary to...