How to close access to GITLAB API?

Question

API

Greetings comrades!
I have a public gitlab.company.com through the API of which project users are visible, for example
If you go to www.gitlab.company.com/api/v4/users/6 then I will see a picture of the following content:
{"id":6,"name" :"Ivanov Ivan,"username":"i.ivanov","state":"blocked","avatar_url":" https://secure.gravatar.com/avatar/0f7900e75014226... ","web_url": " https://gitlab.company.com/i.ivanov ","created_at":"2018-07-02T14:59:22.869Z","bio":null,"location":null,"public_email":" ","skype":"","linkedin":"","twitter":"","website_url":