What is the benefit of doing this? You have just enabled Portal User Visibility in Setup > Sharing Settings.
All users with Write access to Cases on their profile are able to see all Cases ownedby Community Members
Community users in the same community can see each other, regardless of the organization-wide defaults.
Portal users in the same customer or partner portal account can see each other, regardless of the organization-wide defaults.
Community Managers are able to view all Community Users regardless of the organization-wide defaults
Limited information on Community user profiles are publicly accessible e.g. Name, Photo, Reputation Level, Description
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