A system and method is disclosed for detecting and/or mitigating an overload condition from one or more first computers, such as a distributed denial of service (DDoS) attack, viral attack, or the like, targeting one or more of a plurality of second computers located on a network. While one or more DDoS attacks are mitigated, a meter, detection apparatus, software, or method, detects the condition being mitigated in a data cleaning center, and provides an alert or notification regarding the mitigated attack.Another preferred embodiment relates, in general terms, to a system and method for detecting and/or mitigating an overload or attempted overload condition targeting a domain name server. A network connection is provided for receiving one or more DNS requests from one or more client computers located on a network. A preferred embodiment includes a processor for providing a response to the one or more DNS requests to the one or more client computers if more than a threshold number of duplicate DNS requests are received.Another preferred embodiment relates, in general terms, to a system and method for detecting and/or mitigating an attempted overload condition targeting a networked computer system that uses a redirection module to divert data until it is deemed to be clean.