1. A network regulator connected to a plurality of client systems over a local network, wherein a router connected to the local network is configured to assign a first plurality of network addresses to the plurality of client systems, each of the first plurality of network addresses selected from a first range of addresses, wherein the network regulator comprises a hardware processor and a memory, the hardware processor configured to: automatically reconfigure at least one of the router and the local network to prevent an assignment by the router of network addresses from the first range of addresses; assign a second plurality of network addresses to the plurality of client systems, each of the second plurality of network addresses selected from a second range of addresses distinct from the first range of addresses; in response to automatically reconfiguring the at least one of the router and the local network, intercept a request by a client system of the plurality of client systems to access a resource located outside the local network; and in response to intercepting the request, transmit an indicator of the request to a remote security server for analysis, wherein the security server is configured to determine whether accessing the resource constitutes a computer security threat to the client system.