In display, at least. It's not massively common with either Google or Facebook (assuming you avoid their networks), which is part of the reason that both of them make so much money.
I don't think that's true, just that fraud is different on those platforms. I suspect it depends on how you define fraud but certainly if a platform tells me I'm bidding to show adverts to customers who match criteria X, then I expect them to match that criteria.
Your reference talks about a different set of entities, the information from most data brokers is inconsistent and often wrong (much like display).
Because they have first-party information, neither Google nor Facebook suffer as much from this problem (although the most common school attended on Facebook is Hogwarts, so obviously they're not perfect).
> Because they have first-party information, neither Google nor Facebook suffer as much from this problem
Maybe not from the problem outlined in the study, but fraudsters certainly create fake high value "profiles" that they use to commit fraud on those networks.
I spoke with an ad fraud researcher recently for a marketing podcast I started and he spoke in detail about this fraud is carried out. IIRC he referred to it as retargeting fraud.
Sure, but both Google and Facebook have whole teams devoted to stopping these kinds of fraud.
Like, they are definitely not perfect, but they are so much better than the rest of the industry.
I am aware of a bunch of advertisers who refuse to use open-web/app advertising because of the high levels of fraud, and this is a reasonable decision given the state of the industry.
