Research on information engineering surveillance risk evaluation based on probabilistic influence diagram

Based on the systematic analysis of information security risk factors, we introduce the probabilistic influence diagram algorithms in order to solve the problem that it is difficult to evaluate the possibility of threats occur and information property value in the appraisal process. According to qualitative analysis to map out the risk influence diagram of information-based engineering and to calculate the probability of occurrence of information security risks applied Probability and influence diagram evaluation algorithm. And further obtain information security risk assessment conclusions. Finally, an example is introduced to demonstrate the risk analysis from the standpoint of risk analysis and to carry the information engineering surveillance´s point.