By 2025 ad fraud will be the second largest form of organized crime, resulting in losses of up to $1 trillion in damages to the society, creating an unprecedented burden to national economies and tax payers. In this talk you will gain deep insight in to various aspects of the problem; the three modes of ad fraud, money flows, botnet hunting, spam-site detection, adversary profiles and researcher safety. The talk is aimed at researchers, and includes many information that has never been disclosed to public.