1. Getting ahead of advanced threats: achieving intelligence driven information security, recommendation from global 1000 Executives, Security for business innovation council
2. Structured threat information expression (STIX).
https://stix.mitre.org/
3. trusted automated exchange of indicator information, (TAXII)
https://taxii.mitre.org
4. The MITRE Corp, STIX–Structured Threat Information Expression, The MITRE Corp, 2014
5. Cyber observable expression (cybox).
http://cybox.mitre.org/