1. A system for determining reliability of nodes in a mobile wireless network, the system comprising: one or more processors and a memory, the memory being a non-transitory computer-readable medium having executable instructions encoded thereon, such that upon execution of the instructions, the one or more processors perform operations of: receiving an Exploitation Network (Xnet) database, the Xnet database having an Xnet structure formed of a physical node layer (NetTopo), a network dependent (NetDep) layer, and an application dependent (AppDep) layer, the NetTopo layer having NetTopo graphs reflecting connectivity between the nodes, the NetDep layer having NetDep graphs reflecting connectivity dependencies amongst the nodes, and the AppDep layer having Appdep graphs reflecting software application dependencies amongst the nodes; running an Xnet Analytics Engine that monitors and evaluates reliability of each node in the mobile wireless network to provide a reliability estimate of each node and designating suspect nodes; actively probing suspect nodes to determine if behaviors that caused the suspect nodes to be suspected are due to consequences of normal operation or malicious operation; and isolating nodes in the mobile wireless network that are determined to be exhibiting behaviors due to malicious operation.