how to limited privacy on project

[Deleted user]

Hello
We want to be able to set some projects as private.
How can we keep all users from seeing such a project even exists??

Thanks

[Nic Brough -Adaptavist-]

Remove their ability to see the project.

Look at the permission scheme and check the rules for "who can browse project". 

[Joe Pitt]

JIRA works on the 'grant access' model. Many early JIRA users grant the jira-user group access to projects, which allows everyone access. The first thing is to remove that access. I suggest using the project roles to allow access. That way the individual project admins can add people to the project. If you use groups the JIRA admin will have to move users into the groups. It will take some work to convert, but be much easier to administer in the long run. You'll also be able to limit transitions to particular roles.