A person or entity with authorized access.
Source(s):
NIST SP 800-66 Rev. 1 under User from 45 C.F.R., Sec. 164.304

  Individual or (system) process authorized to access an information system.
Source(s):
NIST SP 800-18 Rev. 1 under User from CNSSI 4009

  An individual (person), organization, device or process. Used interchangeably with “party”.
Source(s):
NIST SP 800-102 under Entity
NIST SP 800-89 under Entity
NIST SP 800-133 [Superseded] under Entity

  An individual (person), organization, device or process. Used interchangeably with “entity”.
Source(s):
NIST SP 800-102 under Party
NIST SP 800-89 under Party

  An individual (person), organization, device or a combination thereof. “Party” is a synonym. In this Recommendation, an entity may be a functional unit that executes certain processes.
Source(s):
NIST SP 800-108 under Entity

  See Information System User
Source(s):
NIST SP 800-128 under User

  An individual (person), organization, device, or process.
Source(s):
NIST SP 800-152 under Entity (party)
NIST SP 800-175B Rev. 1 under Entity

  An FCKMS role that utilizes the key-management services offered by an FCKMS service provider.
Source(s):
NIST SP 800-152 under User

  An individual (person), organization, device, or process. “Party” is a synonym.
Source(s):
NIST SP 800-56B Rev. 2 under Entity
NIST SP 800-56A Rev. 2 [Superseded] under Entity
NIST SP 800-56B Rev. 1 [Superseded] under Entity

  An individual (person), organization, device or process.
Source(s):
NIST SP 800-57 Part 1 Rev. 5 under Entity
NIST SP 800-57 Part 1 Rev. 3 [Superseded] under Entity
NIST SP 800-57 Part 1 Rev. 4 [Superseded] under Entity

  A human (person/individual/user), organization, device or process.
Source(s):
NIST SP 800-57 Part 2 Rev.1 under Entity

  See Entity.
Source(s):
NIST SP 800-133 Rev. 2 under Party
NIST SP 800-152 under Party
NIST SP 800-56B Rev. 2 under Party
NIST SP 800-57 Part 2 Rev.1 under Party
NIST SP 800-133 [Superseded] under Party
NIST SP 800-133 Rev.1 [Superseded] under Party
NIST SP 800-56A Rev. 2 [Superseded] under Party
NIST SP 800-57 Part 1 Rev. 3 [Superseded] under User
NIST SP 800-57 Part 1 Rev. 4 [Superseded] under User

  A human entity.
Source(s):
NIST SP 800-57 Part 2 Rev.1 under User

  An individual (person). Also see Entity.
Source(s):
NIST SP 800-57 Part 1 Rev. 5 under User

  A person, device, service, network, domain, manufacturer, or other party who might interact with an IoT device.
Source(s):
NIST SP 800-213 under Entity
NISTIR 8259A under Entity
NISTIR 8259B under Entity

  An individual (person), organization, device, or process; used interchangeably with “party.”
Source(s):
NIST SP 800-133 Rev. 2 under Entity

  Person who interacts with the product.
Source(s):
NISTIR 8040 under User from ISO 9241-11:1998

  item inside or outside an information and communication technology system, such as a person, an organization, a device, a subsystem, or a group of such items that has recognizably distinct existence
Source(s):
NISTIR 8053 from ISO/IEC 24760-1:2011

  An individual, group or an organization participating in an action.
Source(s):
NISTIR 4734 under Party

  A person, organization, or other entity which requests access to and uses the resources of a computer system or network.
Source(s):
NISTIR 4734 under User

  The entity, human or machine, that is identified by the userID, authenticated prior to system access, the subject of all access control decisions, and held accountable via the audit reporting system.
Source(s):
NISTIR 5153 under User

  the set of people, both trusted (e.g., administrators) and untrusted, who use the system.
Source(s):
NISTIR 6192 under User

  A consumer of the services offered by an RP.
Source(s):
NISTIR 8149 under User

  A person, team, or organization that accesses or otherwise uses an Online Informative Reference.
Source(s):
NISTIR 8278 under User
NISTIR 8278A under User

  Individual, or (system) process acting on behalf of an individual, authorized to access an information system. See Organizational User and Non-Organizational User.
Source(s):
NIST SP 800-53 Rev. 4 [Superseded] under User from CNSSI 4009 - Adapted

  Individual, or (system) process acting on behalf of an individual, authorized to access an information system. See Organizational User and Non-Organizational User.
Source(s):
NIST SP 800-53 Rev. 4 [Superseded] under User from CNSSI 4009 - Adapted

  The term user refers to an individual, group, host, domain, trusted communication channel, network address/port, another netwoik, a remote system (e.g., operations system), or a process (e.g., service or program) that accesses the network, or is accessed by it, including any entity that accesses a network support entity to perform OAM&Prelated tasks. Regardless of their role, users must be required to successfully pass an identification and authentication (I&A) mechanism. For example, I&A would be required for a security or system administrator. For customers, I&A could be required for billing purposes. For some services (e.g.. Emergency Services) a customer may not need to be authenticated by the system.
Source(s):
NIST SP 800-13 [Withdrawn] under User

  Either a subject (an active element that operates on information or the system state) or an object (a passive element that contains or receives information).
Source(s):
NIST SP 800-27 Rev. A [Withdrawn]
NIST SP 800-33 [Withdrawn]

  An individual (person), organization, device, or process. “Entity” is a synonym for party.
Source(s):
NIST SP 800-56B Rev. 1 [Superseded] under Party

  An individual (person), organization, device or process. Used interchangeably with “party.”
Source(s):
NIST SP 800-133 Rev.1 [Superseded] under Entity