You can personally determine whether information you display on your profile page is to be displayed on the internal and the public profile page or only the internal one (to associates logged in to the portal). What is on the public profile page will be displayed to the "entire world" and can thereby be indexed and searched for in Google, for instance .
Privacy on the Internet
Bear in mind that the personal information you publish publicly may remain on the Internet, even though you might choose to remove it or limit its display on a later occasion. Guidance for publishing information can be found in Guidelines for Social Media. Your profile pages, including the limited/internal ones, and information uploaded to them, are regarded as public documents.Take a look at your public profile page after making changes, to see what's displayed there