This Recommendation specifies real-time inter-network defence (RID) and provides a method for the secure exchange of incident information. This Recommendation provides the set of incident coordination messages necessary to communicate IODEF documents securely between entities.RID is essentially an envelope for IODEF extensible markup language (XML)documents, including any extensions of IODEF. The standard messages and exchange formats include security, privacy and policy options/considerations that are necessary in a global incident coordination scheme. RID is the security layer between IODEF documents and the transport protocol, provided through both the IODEF-RID XML schema options and the security requirements of the RID communication flows.