As a citizen of the EU, I really want to find out what the advertising industry has on me. I once filed a GDPR Art. 5 request with Quantcast but forgot about it - they give you a link to S3 with a promise that there will be a ZIP containing data within 30 days.
What other hidden players are out there? I know next to nothing about the ad industry
IAB Europe is the industry group representing ad tech in Europe. Their member list will give you tons of organizations that makeup the internet ad ecosystem. Note these are not “hidden” they are the above board members. Shady operators likely have no interest in joining industry groups but if they want to be able to credibly sell to big advertisers they will be.
What other hidden players are out there? I know next to nothing about the ad industry