A Hierarchical Network Security Risk Assessment Method Based on Vulnerability Attack Link Generated

A hierarchical network architecture is constructed in order to exactly assess the security risk of a computer network system. On this basis, a vulnerability attack link generated algorithm is proposed. And then the rationality of the hierarchical network architecture and accuracy of the network security risk assessment method are verified respectively through a typical experiment. The results of the experiment show that the vulnerabilities don´t exist in isolation, the risk of hosts authorized to access can be assessed through this method and thereby providing guidance for the risk to be reduced within the system administrators´ control.