1. A computer-readable media having computer-executable components for managing web requests being received by a server from a client, said web requests each including header data including message identification (message ID) data identifying unique message data included in the web request and client identification (client ID) data identifying a particular client sending the web request, said components comprising: a sending component for sending a reply message to the client for each received, web request having different message ID data, said reply message including transformation data and instructions to compute stamp data as a function of the transformation data; a generating component for generating verification data as a function of the stamp data included in an additional web request received from the client; a comparing component for comparing the generated verification data to the stamp data included in the additional web request received from the client; and a processing component for processing the additional web request if the stamp data of the additional web request corresponds to the generated verification data.