Active defense strategy selection based on non-zero-sum attack-defense game model

Abstract

In order to deal with the problems that defensive measures are lagging behind the attack and that the payoffs of attacker and defender are unequal,an active strategy selection method based on non-zero-sum game was proposed.Firstly,a network security game graph was presented combined with the actual situation of network security and the relationship between the attacker and the defender.Secondly,a network attack-defense game model was proposed based on non-zero-sum game.The attack-defense cost of single security attribute was calculated combined with the host important degree and success rate of defense measures,and according to attack-defense intention,the total attack-defense cost was quantified.Finally,the best strategy for defender was obtained by analyzing the Nash equilibrium of the game model.A representative example was given to illustrate the efficacy and feasibility of the method on attack prediction and active defense strategy selection.