Traditional security solutions were designed to identify threats at the perimeter of the enterprise, which was primarily defined by the network. Whether called firewall, intrusion detection system, or intrusion prevention system, these tools delivered “network-centric” solutions.

Innovation was slow because activity was dictated, in large part, by the capabilities, and limitations, of available technology resources. Much like a sentry guarding the castle, they emphasized identification and were not meant to investigate activity that might have gotten past their surveillance.

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