olemus
(a) = siseringioht
https://www.tessian.com/blog/insider-threats-types-and-real-world-examples/

(b) oht, mille allikas on organisatsioonis endas
= any danger that originates from within an organization
https://firewalltimes.com/internal-threats/
https://www.aspirets.com/blog/what-are-internal-threats-cyber-security/
https://www.diva-portal.org/smash/get/diva2:1019129/FULLTEXT01.pdf

(c) riigisisene julgeolekuoht
= any threat to the national security from inside of a country
https://www.inss.org.il/wp-content/uploads/2020/09/Memo203_e-97-121.pdf
https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/49/e3sconf_interagromash2021_08108.pdf