1. A method for communicating data in a computer network, comprising: communicating data on said computer network from a first computing device to a second computing device, said data specifying a plurality of identity parameters associated with at least one of said first and second computing devices; dynamically modifying at a first location in said computer network a plurality of true values, which correctly represent said plurality of identify parameters, to transform said true values to a plurality of false values, which incorrectly represent said plurality of identity parameters; dynamically modifying said plurality of identity parameters in said data communication at a second location in said computer network to transform said plurality of false values back to said true values; performing said dynamic modification at said first and second location in accordance with a first mission plan; and selectively changing said first mission plan to a second mission plan different from said first mission plan without interrupting communication of data in said network.