The report discusses the rise of fraud in performance marketing and the importance of identifying telltale signs before engaging a fraud detection vendor. The report notes that fraud remains a challenge in the world of performance and engagement-based marketing, particularly in the lower funnel. The report suggests that bad actors have gravitated towards performance fraud as they sense an opportunity. The report provides techniques for assessing whether fraud may exist in traffic, including looking for telltale signs of misconduct in the behavior of bad actors. The report also notes that bad actors have different economic goals and incentives than legitimate users, which can leave telltale signs of their misconduct.