Accountability sits with the teams that define access, approve exceptions, and monitor identity behavior. Security, cloud platform, and IAM owners should share responsibility for permission design, while application and infrastructure owners must validate whether the access still matches operational need. If no one owns review, broad permissions become permanent risk.
How accountability breaks down when cloud identities are over-privileged
When a cloud identity is used for lateral movement or privilege gain, the failure is rarely only technical. It usually reflects a shared accountability gap across identity design, cloud configuration, application ownership, and exception handling. The practical question is not just who changed the permission, but who was supposed to notice that the access path was broader than the workload needed. In cloud environments, that gap often persists because ownership is split across teams and no single group is clearly responsible for reviewing the effective blast radius of an identity.
For that reason, accountability should be assigned to the teams that can actually change the outcome: IAM and security for policy design, platform or cloud engineering for guardrails, and the application or service owner for confirming business need. Where identities are reused, inherited, or delegated, the risk becomes harder to attribute unless ownership is explicit. The OWASP Non-Human Identity Top 10 is useful here because it frames machine and workload identity weaknesses as a lifecycle and governance problem, not just a permissions problem. In practice, many teams only discover ownership ambiguity after an identity has already been used to pivot across systems.
How lateral movement and privilege gain happen through cloud identities
Cloud identities become a lateral movement path when access is broader than intended, credentials are reused, or trust relationships are not tightly bounded. A service principal, workload identity, federated role, or API credential may have enough scope to reach multiple resources, assume another role, or call control-plane APIs. If that identity is not reviewed continuously, an attacker or insider can move from one workload to another, then elevate by chaining permissions that looked harmless when assessed in isolation.
The key operational detail is that privilege gain often comes from composition, not from one obviously dangerous permission. A read-only identity that can enumerate roles, access metadata, or retrieve tokens may still support a follow-on step when paired with weak trust policy, stale secrets, or permissive delegation. That is why accountability has to include both the control owner and the business owner of the identity. The control owner defines what should be possible; the business owner confirms whether that access still reflects current service behaviour.
- Review who owns the permission boundary, not just who created the identity.
- Separate routine operational access from exception-based access so temporary approvals do not become standing privilege.
- Track whether the identity can assume other roles, call admin APIs, or access secrets that enable onward movement.
- Validate that monitoring covers effective use, not only identity creation and deletion.
Cloud identities often fail when teams measure provisioning success but never verify whether the resulting access path still matches the workload’s real task. This guidance breaks down when identities are shared across services with no dependable owner for review.
Shared ownership works only when review, exceptions, and revocation are explicit
Tighter cloud identity governance often increases coordination overhead, so organisations have to balance speed of delivery against the cost of slower approvals and more frequent review. That tradeoff is real, but the absence of clear accountability usually creates a larger cost later because risky access remains in place longer than anyone intended.
There is no single universal model for every organisation, but the best practice is to make accountability specific and testable. Security and IAM should own the policy model, platform teams should own the technical guardrails, and application owners should own the question of whether the identity still needs the access it has. If an exception grants broader privilege, the exception owner should also own the expiry and the revalidation date. When those duties are separated, the most common failure is not malicious neglect but an ordinary handoff gap where everyone assumes someone else is watching.
In cloud environments, accountability also changes with scale. Once identities are created and inherited automatically, manual review alone is not enough unless it is tied to alerts, inventory, and periodic recertification. If the organisation cannot show who approved an exception, who reviews it, and who can revoke it, the identity should be treated as ungoverned rather than merely over-permissioned.
Practitioner takeaway: the decisive control is not naming an owner in a policy, but proving that the owner can review, challenge, and remove access before an identity becomes a durable path for movement or escalation.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 and MITRE ATT&CK address the attack and risk surface, while CIS Controls v8 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 — Inventory and Ownership | Cloud identities need explicit ownership to prevent unmanaged privilege paths. |
| NHI-02 — Secrets and Credential Management | Credential reuse and stale secrets enable lateral movement through cloud identities. | |
| NHI-04 — Privilege and Access Scope | Overbroad permissions and role chaining drive privilege gain and lateral movement. | |
| Recommendation — Assign ownership for each cloud identity and require review of its access scope. Rotate and revoke identity credentials that could be reused for onward access. Limit cloud identity permissions to the minimum scope needed for the workload. | ||
| CIS Controls v8 | 6 — Access Control Management | Access reviews and exception handling directly determine whether privilege remains appropriate. |
| Recommendation — Review and remove unnecessary cloud identity access on a recurring basis. | ||
| MITRE ATT&CK | T1078 — Valid Accounts | Abuse of legitimate cloud identities is a common path for lateral movement. |
| Recommendation — Detect and investigate legitimate-account use that crosses expected cloud boundaries. | ||
| NIST CSF 2.0 | PR.AC-4 — Access Permissions Management | Permission governance and exception control are central to this accountability problem. |
| Recommendation — Enforce least-privilege permissions and require approval for access exceptions. | ||
Related resources from NHI Mgmt Group
- Who is accountable when a trusted cloud identity is used for business email compromise?
- Who is accountable when compromised cloud identity is used for business email compromise?
- Who is accountable when a cloud identity governance platform is used in a regulated environment and a control failure occurs?
- How should security teams prioritise NHI remediation in cloud environments?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on September 7, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
