Game-theory based control strategy of survivability for information system

Survivability of information system is different with various techniques in dynamic work conditions, and which can be classified into multiple grades according to corresponding capability. In an information system, customer needs to pay different service fee at different survivability grade and provider must invest considerable money so as to keep a particular survivability grade. A game-theory based model is constructed by analyzing the action and profits of customer and provider who act as the two players. The mixed strategy Nash equilibrium are derived from the model and a control strategy for promoting survivability grade is devised, with which profits of provider can be maximized. An experiment was carried out in an information system simulated by 5 survivability grades and the results shows that the game-theoretic control strategy is reasonable to determine whether the survivability grade should be promoted by provider.