>myctrl.tools
Preferences
Under active development — Content is continuously updated and improved
Compare

IA-4—Identifier Management

IL4 Mod
IL4 High
IL5
IL6

>Control Description

Manage system identifiers by: a. Receiving authorization from ⚙organization-defined personnel or roles to assign an individual, group, role, service, or device identifier; b. Selecting an identifier that identifies an individual, group, role, service, or device; c. Assigning the identifier to the intended individual, group, role, service, or device; and d. Preventing reuse of identifiers for ⚙organization-defined time period.

>DoD Impact Level Requirements

FedRAMP Parameter Values

IA-4 (a) [at a minimum, the ISSO (or similar role within the organization)] IA-4 (d) [at least two (2) years]

>Discussion

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.

>Programmatic Queries

Beta

Related Services

IAM
AWS Organizations
Resource Tags

CLI Commands

List IAM users with creation date
aws iam list-users --query 'Users[*].{Name:UserName,Created:CreateDate,LastUsed:PasswordLastUsed}'
Check for duplicate user patterns
aws iam list-users --query 'Users[*].UserName'
List resource naming tags
aws resourcegroupstaggingapi get-resources --tag-filters Key=Name
Check account aliases
aws iam list-account-aliases
Open AWS ConsoleDocumentation

>Related Controls

AC-5
IA-2
IA-3
IA-5
IA-8
IA-9
IA-12
MA-4
PE-2
PE-3
PE-4
PL-4
PM-12
PS-3
PS-4
PS-5
SC-37

>Assessment Interview Topics

Questions assessors commonly ask

Process & Governance:

  • •What formal policies and procedures govern the implementation of IA-4 (Identifier Management)?
  • •Who are the designated roles responsible for implementing, maintaining, and monitoring IA-4?
  • •How frequently is the IA-4 policy reviewed and updated, and what triggers policy changes?
  • •What governance structure ensures IA-4 requirements are consistently applied across all systems?

Technical Implementation:

  • •Describe the specific technical mechanisms or controls used to enforce IA-4 requirements.
  • •What automated tools, systems, or technologies are deployed to implement IA-4?
  • •How is IA-4 integrated into your system architecture and overall security posture?
  • •What configuration settings, parameters, or technical specifications enforce IA-4 requirements?

Evidence & Documentation:

  • •What documentation demonstrates the complete implementation of IA-4?
  • •What audit logs, records, reports, or monitoring data validate IA-4 compliance?
  • •Can you provide evidence of periodic reviews, assessments, or testing of IA-4 effectiveness?
  • •What artifacts would you present during a FedRAMP assessment to demonstrate IA-4 compliance?

Ask AI

Configure your API key to use AI features.