We study protocols to enable one user (the principal) to make potentially profitable but risky interactions with another user (the agent), in the absence of direct trust between ...
Safe exchange is a key issue in multiagent systems, especially in electronic transactions where nondelivery is a major problem. In this paper we present a unified framework for mo...
In this paper, our contributions are two-fold: First, we enhance the Min-Min and Sufferage heuristics under three risk modes driven by security concerns. Second, we propose a new ...
This case describes the implementation and subsequent failure of an innovative system installed in the bars of Alvalade XXI, the recently built football stadium in Lisbon, Portuga...
Identity theft has fostered to a major security problem on the Internet, in particular stealing passwords for web applications through phishing and malware. We present TruWallet, ...