A group is a collection of several projects.
If you organize your projects under a group, it works like a folder.
You can manage your group member’s permissions and access to each project in the group.
GitLab Security Department
Primary group for the GitLab Security Department and projects concerning the security of GitLab and GitLab.com. Primary issue tracker: gitlab-com/gl-security/security-department-meta>
https://about.gitlab.com/handbook/engineering/security/#resources