With disruption continuing in all areas of marketing, transparency is the key driver of this change – the industry must reinvent the advertising model around ethically driven business practices, says Ben Humphry. The problem is twofold: marketers question visability and viewability and complain they are in the dark about ad buying results (were they great or were they faked?); meanwhile consumers fear they are being commoditised via their data . . . so resort to ad-blocking. Trust is eroding on both sides. Thus, adtech ethics must shift from concern to action – here's how.