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Open, distributed multi-agent systems with heterogeneousagent societies face the challenge to maintain anappropriate performance level in the presence of bad-behavingagents. An approach to counter the exploiting behaviour of suchagents is the use of trust mechanisms. Yet, it is still possible foragents with a more complex behaviour to manipulate and exploitthe trust mechanism. In this paper, we show...
Self-integration in open, distributed technical systems needs a mechanism for establishing and evaluating trust relationships to work in a stable and efficient manner. Based on a case study concerned with a Trusted Desktop Grid, this paper investigates techniques to isolate malicious agents. Therefore, we introduce a novel distributed strategy to identify and accuse nonbenevolentagents. Since intentionally...
Grid systems are an ideal basis to parallelise computationally intensive tasks that efficiently can be split into parts. One possible application domain for such systems is rendering of films. Since small companies and underground film producers do not have the possibility to maintain appropriate computing environments for their own films, grid-based approaches can be used to build a self-organised...
Self-integration of system components is characterised by uncertain relations among these components. One approach to handle such uncertainties is to introduce technical trust. In previous work, we developed a concept to automatically build collections of components with stable trust relationships so-called Trusted Communities. In this paper, we discuss advanced attacks to the trusted communities...
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