A system implements a method of identifying an electronic device that requests access to a web service. A processor may receive, from an electronic device via a communication network, a first group of requests to access one or more web service functions on behalf of a registered user of the web service. The processor will receive, in connection each of the requests in the first group, one or more data points about the electronic device from which the request originated, will analyze the data points and grouping the requests into a plurality of strong components so that each strong component comprises requests that originate from either a single electronic device or from a plurality of electronic devices having one or more similar properties, and will generate a graph representative of one or more associations between or among the strong components within the grouping.