Network attack strategy digging based on object Petri net

To improve the model ability of network attack and complex system, this paper proposes a global network attack model based on Hierarchical Expanded Stochastic Petri Net. The model is suitable for the cooperative attack simulation and can describe both macroscopic network attack and microcosmic host attack synthetically, with solving the problem of state space explosion. The paper represents model generation algorithm and digs for potential attack relationships among hosts according to the definition of rough path. Then utilize ant colony algorithm to find k-critical vulnerable paths. By estimating rough paths and accurate paths synthetically, the quantitative network risk evaluation method can be acquired.