Abstract: In accordance with embodiments, there are provided mechanisms for methods and systems for the detection of fraudulent advertisement views of advertiser supported content on mobile devices through the analysis of data and of data exchange between groups of mobile devices and an advertising server. The data analysis is carried out by comparing statistical data spectra of different mobile device groups to detect unusual levels of advertisement views within a mobile device group. The data analysis provides a high guarantee of fraud detection of illegitimate advertisement views for sponsoring advertisers. Embodiments detect non-meaningful ad display requests or clickthroughs, identify bots among application users and provide an estimate of the number bots.