Two-Factor Authentication with Java and Google AuthenticatorI am more than sure that each of you have at least one account with enabled Two-Factor Authentication (2FA). But if you are still unfamiliar with 2FA I’ll give you some general explanation. It’s a second step in login sequence that asks you to enter 6-digits code sent to you by email, text message or Google Authenticator app and this code expires in 30 or 60 seconds. This second step of authentica
