PR.AA-02.199
Does your organization issue unique credentials to each individual user and prohibit credential sharing?
Explanation
Unique credentials ensure accountability and traceability of actions performed within systems, making it possible to identify who accessed what resources and when. Shared credentials create security vulnerabilities as they make it impossible to attribute actions to specific individuals, complicate access revocation when someone leaves, and often lead to weaker password practices. Evidence could include a documented policy prohibiting credential sharing, screenshots of user management systems showing individual accounts for each user, audit logs showing unique user IDs for system access, or documentation of technical controls that prevent credential sharing (such as multi-factor authentication tied to individual devices).
Implementation Example
Issue a different credential for each person (i.e., no credential sharing)
ID: PR.AA-02.199
Context
- Function
- PR: PROTECT
- Category
- PR.AA: Identity Management, Authentication, and Access Control
- Sub-Category
- Identities are proofed and bound to credentials based on the context of interactions

