The OASIS Cyber Threat Intelligence (CTI) TC was chartered to define a set of information representations and protocols to address the need to model, analyze, and share cyber threat intelligence. In the initial phase of TC work, three specifications will be transitioned from the US Department of Homeland Security (DHS) for development and standardization under the OASIS open standards process: STIX (Structured Threat Information Expression), TAXII (Trusted Automated Exchange of Indicator Information), and CybOX (Cyber Observable Expression).