Security markings can be applied to entities such as projects, customers, products, documents, etc. such that they can only be seen by personel with appropriate clearance.
Each clearance level can be assigned an arbitrary set of protective markings, although higher level clearance would normally be a superset of the lower ones.
Security markings and clearance levels can themselves be protectively marked, in order to obscure their existence.
The sample data set created with a trial account includes an example set of protective markings and clearances loosely based on government definitions, but these can easily be adapted to a commercial context, or a custom set defined as required.
Note that protective marking requires a professional level subscription or higher, although other mechanisms do exist to restrict project visibility, including eyes-only projects, and user level roles and permissions.
