A Method for Network Security Risk Assessment and Decision-Making Based on the Cloud Model
In order to assess the risk of network security more reasonably, a cloud-model based method for network risk assessment was proposed. It took advantages of cloud model featuring perfect combination with randomness and fuzziness. By analyzing the characteristic of the network risk assessment, the main ideas, key technical and implementation steps of the method were given. The standard clouds were generated using improved backward cloud algorithm with unknown certainty. The improved algorithm with smaller deviation was also proved. A cloud similarity algorithm, which was based on the distance measure of cloud droplets, was used to measure the similarity between the current cloud and the standard cloud.