Block Certain Fields in the User Record for Orgs with Communities and Portals (Critical Update)
Where: This change applies to all orgs with communities or portals.
How: Salesforce is introducing an org setting that allows for the hiding of other users' personal information in pages showing the user record to external user profiles, and in SOSL and SOQL queries that run as external users.
Admins can enable the setting Hide personal information for the org under User Management Settings. After enabling the setting, searches on user records don't show the affected fields of other users to external users. Test any changes in a sandbox environment before introducing it in production.