Patent attributes
One or more servers receive requests from clients and send responses. At least a subset of the responses including cookies produced by the one or more servers, and at least a subset of the received requests including cookies that were previously produced by the one or more servers and sent to the clients with responses to previously processed requests. Each of the cookies includes a respective user identifier. The one or more servers analyzing the received cookies to detect a first condition, which indicates that a respective plurality of clients may be using cookies that have a shared user identifier. Upon detecting the first condition, the one or more servers send at least one of the clients of the respective plurality of clients a response that includes a new cookie having a user identifier that is distinct from the shared user identifier.
