UCO: A Unified Cybersecurity Ontology

The Unified Cybersecurity Ontology (UCO) is intended to support information integration and cyber situational awareness in cybersecurity systems. The ontology incorporates and integrates heterogeneous data and knowledge schemas from different cybersecurity systems and most commonly used cybersecurity standards for information sharing and exchange. The UCO ontology has also been mapped to a number of existing cybersecurity ontologies as well as concepts in the Linked Open Data cloud. We also present a prototype system and concrete use cases supported by the UCO ontology.