id: "IA-04" title: "Identifier Management" family: "IA" family_name: "Identification and Authentication" sort_id: "ia-04" priority: "P1" implementation_level: "organization" enhancements: - ia-4.1 - ia-4.2 - ia-4.3 - ia-4.4 - ia-4.5 - ia-4.6 - ia-4.7 - ia-4.8 - ia-4.9
Statement
Manage system identifiers by:
Receiving authorization from {{ insert: param, ia-04_odp.01 }} to assign an individual, group, role, service, or device identifier;
Selecting an identifier that identifies an individual, group, role, service, or device;
Assigning the identifier to the intended individual, group, role, service, or device; and
Preventing reuse of identifiers for {{ insert: param, ia-04_odp.02 }}.
Guidance
Common device identifiers include Media Access Control (MAC) addresses, Internet Protocol (IP) addresses, or device-unique token identifiers. The management of individual identifiers is not applicable to shared system accounts. Typically, individual identifiers are the usernames of the system accounts assigned to those individuals. In such instances, the account management activities of AC-2 use account names provided by IA-4 . Identifier management also addresses individual identifiers not necessarily associated with system accounts. Preventing the reuse of identifiers implies preventing the assignment of previously used individual, group, role, service, or device identifiers to different individuals, groups, roles, services, or devices.
Assessment Objective: system identifiers are managed by receiving authorization from {{ insert: param, ia-04_odp.01 }} to assign to an individual, group, role, or device identifier;
Assessment Objective: system identifiers are managed by selecting an identifier that identifies an individual, group, role, service, or device;
Assessment Objective: system identifiers are managed by assigning the identifier to the intended individual, group, role, service, or device;
Assessment Objective: system identifiers are managed by preventing reuse of identifiers for {{ insert: param, ia-04_odp.02 }}.
Identification and authentication policy
procedures addressing identifier management
procedures addressing account management
system security plan
system design documentation
system configuration settings and associated documentation
list of system accounts
list of identifiers generated from physical access control devices
other relevant documents or records
Organizational personnel with identifier management responsibilities
organizational personnel with information security responsibilities
system/network administrators
system developers
Mechanisms supporting and/or implementing identifier management