Re:Why we won’t be supporting Sign in with Apple
by jdxcode on Monday June 29, 2020 @07:59PM
(#23684961)
That doesn't solve the problem. You would have to go to every method to figure out which one it might be listed under. It needs to be in the browser/password manager to tell you which service was used.
You can. On each of the places you mention (Google and Facebook, certainly), somewhere in a settings page/window, you'll find your list of 'authorised apps'.
These will be a list the login systems to the third-party sites you've used to log in with.
You should then see a way to 'revoke' their access to your data.