1. A system for detecting and mitigating an attempted overload condition targeting one or more of a plurality of networked computer systems, comprising: a network connection for receiving a volume of data, D in , over a time period, P in , from one or more first computers located on a network; one or more attack mitigation modules for detecting the attempted overload condition, the attempted overload condition being directed to one more of a plurality of second computers located on the network, the attack mitigation modules producing a volume of clean data, D out , over a time-period, P out , wherein the time period, P out , is equal to the time period, P in ; and a meter for detecting the presence of the mitigated overload condition attempt when D out divided by P out is substantially less than D in divided by P in .