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  2. In military cyberspace operations, an abstraction of logical cyberspace with digital representations of individuals or entities in cyberspace, used to enable analysis and targeting. May be associated with a single or multiple entities.
CNSSI 4009-2015 from DoD JP 3-12

  1. An electronic identity that can be unambiguously associated with a single person or non-person entity (NPE). A single person or NPE may have multiple personas, with each persona being managed by the same or different organizations.
CNSSI 4009-2015 from ICTS UIAS v2