olemus
ilming, mis viitab millegi tegelikule või võimalikule toimumisele

Collins English Dictionary:
1. something that provides an indication, esp of trends

näiteid
https://en.wikipedia.org/wiki/Indicator_of_compromise

https://www.cisco.com/c/en/us/about/security-center/identifying-correlating-attack-indicators.html

https://www.ior-institute.org/public/IORKRIGuidanceNov2010.pdf

https://info.publicintelligence.net/ROCICterroristindicators.pdf