I'm looking for a fast and easy way to handle security (viewability) of issues over all projects.
Scenario is:
We have setup the Jira company environment and several different projects. We have some external developers that are assinged to their specific projects.
I did not yet use the security scheme feature but now I need to restrict the external users from watching issues from all the projects.
I could do this in a very complicated and effortsome way with groups that I would have to track in both project and groupmember administration...what I'm missing is the option to grant access to issues on project-member basis.

so when assining a security scheme for a project I want to simply choose that only project members can view this projects issues - didn't find that option so far!?!