Network optimal defense strategy selection method and device based on bounded rational game theory

Abstract

The invention belongs to the technical field of network security and particularly relates to a network optimal defense strategy selection method and device based on a bounded rational game theory. Themethod comprises the following steps: constructing an offensive and defensive game model in a bounded rational situation according to the bounded rationality of the actual offensive and defensive sides; a random optimal reaction dynamic differential equation of a participant selection strategy is established by setting a participant rationality degree parameter in combination with an offensive and defensive game strategy set and according to historical data; the two simultaneous offensive and defensive parties are treated as the random optimal reaction dynamic differential equation of the participant; and an optimal defense strategy is determined and output by solving and screening a stable equilibrium point. Compared with the method of only giving an equilibrium solution and not analyzing the Nash equilibrium formation process, the network optimal defense strategy selection method and device based on bounded rational game theory in the present invention analyze the dynamic evolutionprocess of the bounded rational evolution game equilibrium, and the utility and the guiding significance are stronger when being applied to network defense decision; the dynamic analysis efficiency ofstrategy selection can be improved; and the network security performance is further improved.

Description

Technical field [0001] The invention belongs to the technical field of network security, and particularly relates to a method and device for selecting network optimal defense strategies based on bounded rational game theory. Background technique [0002] As network information systems become more complex and large-scale, security attacks have become more diverse, and the antagonism and strategic dependence of both offensive and defensive network security makes it difficult to select the optimal defense strategy. How to compromise defense costs and benefits according to different attack intensities, and achieve active defense under moderate security conditions, has become one of the main challenges facing network security. Game theory is a decision theory that studies the direct interaction of behaviors between decision-making subjects, and can be effectively used to guide the selection of optimal defense strategies. At present, the selection of common network defense strategies ...

AI Technical Summary

Problems solved by technology

At present, the common network defense strategy selection based on game theory is based on the premise of complete theoretical assumptions of offensive and defensive players, without considering whether the complete rationality of the participants is in line with the reality of network attack and defense

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