ISO/IEC 27002:2013, 8.2.1 is augmented for communities: besides the 27002 bases for classification (legal requirements, value, criticality, and how sensitive the information is to unauthorized modification or disclosure), community information is also classified by how credible it is and how high its priority, and shared information is disseminated in accordance with that classification. The Traffic Light Protocol of Annex C is the widely used distribution marking.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.