dc.description.abstract | Security and privacy issues have become critically important with the fast expansion of multiagent
systems. Most network applications such as pervasive computing, grid computing and P2P
networks can be viewed as multi-agent systems which are open, anonymous and dynamic in
nature. Such characteristics of multi-agent systems introduce vulnerabilities and threats to
providing secured communication. One feasible way to minimize the threats is to evaluate the trust
and reputation of the interacting agents. Many trust/reputation models have done so, but they fail
to properly evaluate trust when malicious agents start to behave in an unpredictable way. Most
trust/reputation models have not yet addressed this issue. So, to cope with the strategically altering
behavior of malicious agents; we present a trust based reputation model for secure multi agent
communication in open environment. First analyze the different factors related to evaluating the
trust of an agent and then propose a model for effective secure agent’s communication. Simulation
results indicate that our model compared to other existing models can effectively cope with
strategic behavioral change of malicious agents. | en_US |