What is STIX? What is STIX? Structured Threat Information Expression (STIX) a language and serialization format used to exchange cyber threat intelligence (CTI). Related Resources Solution Omnis Security Omnis Network Security is a holistic cybersecurity platform for comprehensive network visibility, threat detection, investigation, and protection. Learn more Blog ASERT NETSCOUT’s network security experts provide world-class cyber security research and threat analysis for the benefit of today’s enterprise and network operators. Learn more