well, apparently in 2018 Google signed a secret deal with Mastercard sharing credit card payment information to do offline tracking of sales that originated fro

well, apparently in 2018 Google signed a secret deal with Mastercard sharing credit card payment information to do offline tracking of sales that originated from their ads. source: https://www.bloomberg.com/news/articles/2018-08-30/google-and-mastercard-cut-a-secret-ad-deal-to-track-retail-sales https://www.bloomberg.com/news/articles/2018-08-30/google-an... and they did this, even if you told them not to track you.