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?
John Macafee got hacked from using 2FA. It gave the hackers the ability to recover his phone number. Read about it by googling it. I never liked the idea of it anyways because of a few reasons. I have turned it off since Macafee's hack back in December.