My question to someone from the ad-industry would be if there are known "intersections" between these anonymised data sets ad-tech is using to sell as much as possible, and companies who buy these data-sets to connect them to real identities.
Especially because the web is full of Privacy notices people agree to, and I guess in some of those people actually agree to have their anonymous browsing data connected to their real identities.
Especially because the web is full of Privacy notices people agree to, and I guess in some of those people actually agree to have their anonymous browsing data connected to their real identities.