olemus
ISO/IEC 27000:
teavet kokkuleppe alusel ühiselt kasutav organisatsioonide ja/või isikute rühm
=
group of organizations that agree to share information
Note 1 to entry: An organization can be an individual.

näiteid
https://www.ukmto.org/-/media/ukmto/mievom-notes-pdf/indian-ocean/2019/dec/enabling-your-business-through-effective-security--risk-management.pdf

https://en.wikipedia.org/wiki/Information_Sharing_Environment

https://www.x-isac.org/assets/images/guidelines_to_set-up_an_ISAC.pdf