1. A computerized method for propagation protection within a network, the method comprising: monitoring, by a transparent network appliance, data being transmitted from a first portion of the network to a second portion of the network through the network appliance; analyzing, by the network appliance, the data to determine whether the data represents a threat to the network; and transmitting the data to the second portion of the network if the data does not represent a threat to the network or preventing transmission of the data to the second portion of the network if the data represents a threat to the network.