Labelling different types of information

Why label?

Applying labels (protective markings) to security classified or sensitive information indicates that the information requires protection and dictates the level of protection required. Protective markings help control and prevent compromise of information as they are an easily recognisable way for information users (visually) and systems (such as an entity’s email gateway) to identify the level of protection the information requires. The labels describe why the dissemination of the information is limited.