The Zero-Missed Isolation of Constrained Collusive Covert Attacks in Large-Scale Systems

The existing attack isolation methods assume that the covert attacks are omniscient and can collude arbitrarily. With the increase of the system scale, it's almost impossible for the attacks to obtain the information of the whole large-scale system. This paper addresses the isolation problem of constrained covert attacks where the attacks are able to collude only when there is an attacked path. The graph conditions of zero-missed attack isolation are derived for the constrained collusive attacks, which are more relaxed than that for attack collusion without constraint. A numerical example is provided to show the effectiveness of the theoretical results.