The Traffic Light Protocol should be familiar to anyone working with sensitive data, with levels RED, AMBER, GREEN and WHITE being used to specify how far information can be shared. In recent years it has become clear that these four levels are not enough, so the United Nations International Committee on Responsible Naming (UN/ICoRN) has introduced nine new TLP levels for implementation from the
Article Link: https://blog.dynamoo.com/2018/04/new-traffic-light-protocol-tlp-levels.html