Another important question is related to ethics. Since
advertisers pay for the ads by impressions or clicks, our
analysis, which involves loading and clicking ads, may cause
economical disturbances. Nonetheless, we argue that such
analysis is for the greater good of enhancing security in
the ecosystem. Furthermore, our study comes after earlier
precedents of malvertising research [4], [5], which have faced
similar ethical challenges. It is possible to minimize the analysis
impact if ad networks collaborate and provide their ad inventory
to parties running such analysis services.