Is there any loss of privacy while using 2 Factor authentication?
If you use Google Authenticator on an android phone (where essentially you have linked your google id), to authenticate the login of a third party website, can google link your google id with the credentials of the third party website?
In a technical way I think they can access our credentials but because they want to prove to the world how robust this product of theirs is nothing can be done to help us even in case of a lockout to our own crypto vaults which might be worth millions. I thick 3fa remains one of safest security features today.