[dillondoyle]

I think OP comment is probably referencing more purchase & consumer data, rather than sell side impression data. E.g. we send non-profit donation data into FB to help optimize our fundraising advertising. And ads are transacted based on conversions a lot of the time, instead of raw impression or click data which I think can optimize for fraud like you say.

Though I haven't thought much about what you bring up or that principal, thanks for sharing.

Ultimately google can render ads through a middleman iframe they control, so even going back to a basic impression count without a bunch of JS controls and measurement they still have lots of tools especially since they have large amount of log in data on their domains only they can verify.

I remember when I was just learning the internet doing something like this. copy pasting html (before it was all rendered with JS) to edit things to make them my own. I used an adsense account to render mesothelioma keywords and hit refresh a bunch; got paid a small amount, my parents were impressed a 13 year old got checks from google ;) There's a ton more learning resources now, but the days of copy pasting basic website html is gone.