Reputation systems aim to induce honest behavior in online trade by providing information about past conduct of users …. Online reputation, however, is not directly connected to a person, but only to the virtual identity of that person. Users can … therefore shed a negative reputation by creating a new account. We study the effects of such identity changes on the efficiency …

Reputation systems aim to induce honest behavior in online trade by providing information about past conduct of users …. Online reputation, however, is not directly connected to a person, but only to the virtual identity of that person. Users can … therefore shed a negative reputation by creating a new account. We study the effects of such identity changes on the efficiency …

unless he pays a ransom to criminals. A criminal’s ability to make money from ransomware critically depends on victims … through reputation. We demonstrate that there are situations in which it is optimal for the criminal to always return the … files and situations in which it is not. We argue that the ability to build reputation will depend on how victims …