Even when choosing the most restricted user rights (Role Plugin: Global Role only 1 Read), it is possible for every user to view the Jenkins User Id AND the name of the user (see screenshots).
Working with an Active Directory for authentication, this means its possible for everybody to get the user names from AD AND the common names (Security Hole with AD Plugin?).

Goal: create a Permission to allow specific People/Roles to see this User Account info and deny it to all others.