Restrict public viewing of user profile

[purldator (mountain)]

Related:

Is there any possibility, that only Members can view the personal Profiles?

Hello Members, I would like to avoid, that anyone in the “www” can read and visit my members profiles. Is it possible, that everyone can read in the forum, but if you want wo visit a profile you have to log in and create an account? Thanks in advance Johannes

(Posting to say this has been requested before; I fully support this option to be in core.)