Google’s Efforts Against Click Fraud are Reasonable

Following are some excerpts from the Report developed by Dr.Alexander Tuzhilin

“These inspection systems have been developed by Google over an extensive period of time and are constantly improved to extend their functionality and make them better for the investigators to do their inspections more effectively. I have personally observed several such inspections and can attest to how successfully they have been conducted by Google’s investigators. This success can be attributed to (a) the quality of the inspection tools, (b) the extensive experience and high levels of professionalism of the Click Quality inspectors, and (c) the existence of certain investigation processes, guidelines and procedures assisting the investigators in the inspection process.”

“Google has built the following four ‘lines of defense’ for detecting invalid clicks: pre-filtering, online filtering, automated offline detection and manual offline detection, in that order. Google deploys different detection methods in each of these stages: the rule-based and anomaly-based approaches in the pre-filtering and the filtering stages, the combination of all the three approaches in the automated offline detection stage, and the anomaly-based approach in the offline manual inspection stage. This deployment of different methods in different stages gives Google an opportunity to detect invalid clicks using alternative techniques and thus increases their chances of detecting more invalid clicks in one of these stages, preferably proactively in the early stages.”

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