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A quantitative risk evaluation method for network security is proposed based on analyzing the process that attackers intrude network. The analysis depends on modeling attack activities and attack processes by tracking the transferring of safety states. Three key factors of risk evaluation about assets, threats and vulnerabilities are identified and quantified. Especially the attack probability indexes...
P2P systems have a dynamic open and anonymous characteristic, which restricts P2P system of cooperation between the users and system reliability and availability. A subjective trust model of P2P network based on reputation and risk is presented to solve the problem. Taking into account the influence on the calculation of confidence at different periods of trading, time decay function which different...
As P2P system has dynamic open and anonymous characteristics, and these seriously restrict P2P system of cooperation between the users and system reliability and availability. To solve the above problems, a trust model of P2P network based on reputation and risk is presented. Taking into account the influence on the calculation of confidence at different periods of trading, time decay function which...
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