Tag Propagation¶

Introduction¶

This document aims to explain how tag propagation will be handled within Governance Engine OMAS.

The terms tag and classification should be treated interchangeably....

Tag propagation is the process by which we figure out which classifications should apply to a particular asset.

For example a classification may be associated directly with an asset, or instead an asset may be associated with a business term that itself is classified.

We also have to resolve conflicts.

A series of scenarios will be presented.

Scenarios¶

Direct Classification¶

The Asset (EmpSal) is classified as Sensitive This is a direct classification, exactly once, - there is nothing to resolve This classification will be exposed via GE-omas against the EmpSal resource

Direct Multiple Classification¶

The Asset (EmpSal) is classified as Sensitive and TopSecret. This is invalid - there should only be a single governance classification applied. No attempt will be made to reconcile these multiple classifications - ie to determine which should take precedence, which is most restrictive, are they the same etc. instead as this is an error, the asset will not be exposed at GE-omas at all. An Audit log entry will be created reporting the error.

Classification via Business Term¶

The EmpSal asset is assigned the business term 'EmployeeSalary' which gives it meaning. This business term is classified as Sensitive, so the resultant classification for EmpSal is Sensitive

Classification via Business Term and Directly¶

The EmpSal asset is assigned the business term 'EmployeeSalary' which gives it meaning. This business term is classified as Sensitive However the asset is also classified as Top Secret Since this has narrower scope, and as long as it is the only direct classification, this will be used So the resultant classification here is TopSecret.

Classification via multiple business terms¶

The Asset (EmpSal) is assigned the two business terms EmployeeBonus & EmployeeSalary This is invalid - there should only be a single business term applied. No attempt will be made to reconcile these multiple terms, or their classifications - ie to determine which should take precedence, which is most restrictive, are they the same etc. instead as this is an error, the asset will not be exposed at GE-omas at all. An Audit log entry will be created reporting the error.

Reference material¶

Cary Workshop¶

In November 2018 design meetings in Cary came up with the following diagrams, which hopefully have been explained and the points addressed in this document.

Raise an issue or comment below