A Hub Admin can adjust what people can see in each other's profiles.
To get to the hub settings, click on My Hubs on the upper left> Select the hub from the drop down > click hub settings.
Click Admin Console > Hubs > Then select the gear at the end of the row with the hub you would like to edit.
Once you are in the settings section, visit the profile tab by clicking on Profile.
You will see options for Member Access where can stop allowing members to see each other's profiles.
Or in System Profile Fields Visible to Members you can modify what fields are visible on each other's profiles.
Always remember to click the blue Save Changes button when you are done.