They cannot see my data, they can give target parameters like ‘show to those who are private banking customers’ or ‘show to females in the 20s with daddy issues’.
Fun fact: A zip code, gender, and a DOB is enough to have an 85% chance of it being you. It’s a very well-studied area. You are de-anonymized with very little data exposed, all of which Google includes in ad auctions.
Your data is exfiltrated and sold for ads. You don’t even need to buy an ad, bidders on ads can see your data
They cannot see my data, they can give target parameters like ‘show to those who are private banking customers’ or ‘show to females in the 20s with daddy issues’.
Fun fact: A zip code, gender, and a DOB is enough to have an 85% chance of it being you. It’s a very well-studied area. You are de-anonymized with very little data exposed, all of which Google includes in ad auctions.
https://dataprivacylab.org/projects/identifiability/paper1.pdf
https://www.forbes.com/sites/adamtanner/2013/07/22/how-just-a-zip-code-can-tell-a-marketer-exactly-who-you-are/
https://georgetownlawtechreview.org/re-identification-of-anonymized-data/GLTR-04-2017/
https://www.johndcook.com/blog/2018/12/07/simulating-zipcode-sex-birthdate/
And then what? I tell google to show my ad to a guy born on some date and in a zip code. What data am I getting?