The incident object description exchange format (IODEF) specifies a data model representation for sharing commonly exchanged information about computer security or other incident types. This Recommendation describes the information model for the IODEF and provides an associated data model specified with XML Schema. Any data model representation or framework enabling the sharing of information about computer security or other incident types must provide the capabilities to comply with all applicable national and regional laws, regulations and policies. Implementers and users of all ITU-T Recommendations, including Recommendation ITU-T X.1541 and the underlying techniques, shall comply with all applicable national and regional laws, regulations and policies.