1. A computing system comprising a processor and a memory for determining whether a website is an illegitimate website, the system comprising: a requester module executed by the processor configured to request one or more rules from a host server for a website and to receive a response from the host server in response to the request, the response including one or more rules; an analysis module executed by the processor configured to determine whether a response or lack of a response received by the requester module, from the host server in response to a request for one or more rules from the host server, indicates that the website is an illegitimate website; and a record module executed by the processor configured to store an indication that the website is an illegitimate website, wherein the one or more rules provide one or more instructions to a robot computer program regarding access of the website by the robot computer program, wherein the one or more rules include a first set of one or more rules for a first type of robot computer program and a second set of one or more rules for a second type of robot computer program, and wherein the analysis module is configured to identify a discrepancy between the first set and the second set of one or more rules.