CLICK FRAUD MONITORING BASED ON ADVERTISING TRAFFIC

Various techniques of monitoring for click fraud in an online advertising system are disclosed herein. In one embodiment, a web server includes a traffic module configured to detect a request from a client device, an analysis module configured to perform a determination if the detected request includes a client ID. The web server also includes a calculation module configured to determine a count of requests with client ID and a count of requests without client ID based on the determination by the analysis module. The web server further includes a fraud module configured to monitor for click fraud based at least in part on the determined count of requests with client ID and/or count of requests without client ID from the calculation module and the determination by the analysis module.