Almost completely unrelated, but I recently helped out a very confused family member with deleting not one, but two Google Cloud accounts they had no idea existed, and that they only learned about from an email referencing reCAPTCHA getting integrated into some other Google product offering.

I have absolutely no idea what happened there. My best theory so far is that they clicked on some really, really wrong buttons when solving a captcha themselves while logged in to their Google account in the same browser. Bizarre.