Yes, it would. The idea behind two factor authentication is that an attacker now needs two things to access your account: Your password and your phone. With two

Yes, it would. The idea behind two factor authentication is that an attacker now needs two things to access your account: Your password and your phone. With two factor authentication, even if an attacker acquires or changes your password (which is what happened in Matt's case), they still won't be able to login to your account.