Comment by brofallon

I'm wondering how hard it would be to reverse-engineer the FLoC algorithm that assigns ids based on browsing history.. could one just have a bunch of headless browsers randomly visit sites, and compute the FLoC ids periodically to see what types of sites end up producing which ids? This seems important since being assigned a group ID that includes a bunch of people might not be so bad, but (as the article suggests) if its well known which web sites are included in the group, that's a more disturbing story