They should use the same inventory of admin identities, secrets, and certificates, then agree on rotation, offboarding, and review triggers. IAM owns the identity lifecycle, while security operations validates where those identities can reach and what they can change. That shared model reduces the chance that a tool is protected on paper but exposed through stale access in practice.
Why This Matters for Security Teams
Privileged access is where identity hygiene and network exposure meet. IAM can define who should hold an admin secret or certificate, but network security determines whether that identity can reach the management plane, the database, the key vault, or the CI/CD system it was created to control. When those teams work separately, stale credentials, over-privileged accounts, and unreachable-but-still-valid access paths persist long after a change ticket closes.
That coordination gap shows up quickly in non-human identity programs. NHIMG research on The State of Non-Human Identity Security reports that lack of credential rotation is the top cause of NHI-related attacks for 45% of organisations, with inadequate monitoring and over-privileged accounts each cited by 37%. Those are not abstract governance issues; they are operational failures across identity, privilege, and exposure control. Current guidance suggests treating privileged access as a shared control plane, not a handoff between teams.
In practice, many security teams encounter risky lateral access only after a service account has already been abused, rather than through intentional review and enforcement.
How It Works in Practice
The most effective operating model starts with a shared inventory of privileged NHIs, including admin users, service accounts, API keys, OAuth grants, SSH material, and certificates. IAM owns lifecycle controls: creation, approval, rotation, expiry, offboarding, and ownership mapping. Network security validates where those identities can connect, which subnets, services, and ports they can reach, and whether those paths are consistent with the stated privilege model.
This works best when both teams use the same policy language and the same triggers. For example, a change to a production database role should automatically trigger credential rotation, review of firewall and segmentation rules, and verification that any associated Ultimate Guide to NHIs control mappings still match the real workload. Network controls should not be relied on as a substitute for IAM, but they are essential for constraining blast radius when a secret is exposed or reused.
- Use one authoritative asset and identity inventory, not separate spreadsheets for IAM and network teams.
- Attach each privileged identity to a business owner, system owner, and expiry or review date.
- Rotate secrets on schedule and after every sensitive event, such as role change or incident.
- Validate reachability against actual required paths, not broad administrative assumptions.
- Alert on impossible access patterns, such as an identity reaching admin endpoints it never used before.
For teams aligning to Zero Trust, the practical anchor is NIST SP 800-207, which expects continuous verification and explicit policy enforcement rather than trusted internal zones. OWASP’s OWASP Non-Human Identity Top 10 also reflects the same reality: identity weakness and network exposure are usually exploited together. These controls tend to break down when legacy systems hard-code shared admin credentials because there is no clean way to bind access to a single owner, endpoint, or rotation event.
Common Variations and Edge Cases
Tighter privileged access control often increases operational overhead, requiring organisations to balance faster recovery from incidents against more review, rotation, and change coordination. That tradeoff is especially visible in hybrid estates, third-party integrations, and automation-heavy environments where service accounts may be created and discarded quickly.
There is no universal standard for this yet, but current guidance suggests a few patterns. In cloud platforms, IAM should control entitlement scope while network security enforces segmentation around management APIs and sensitive control planes. In on-premises environments, the same model often depends on privileged access management, jump hosts, and strict east-west filtering. In both cases, the teams need a joint exception process so temporary access does not become standing access.
NHIMG’s research on the 2024 Non-Human Identity Security Report shows that 59.8% of organisations see value in dynamic ephemeral credentials, which is a strong signal that static privileged access is losing favor. But ephemeral credentials only work when network policy and identity policy expire together. That is why a stale firewall rule can be just as dangerous as a stale secret. In environments with rapid infrastructure churn, high-frequency deployments, or unmanaged third-party OAuth connections, the model becomes harder to sustain because access paths change faster than review cycles.
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 address the attack and risk surface, while NIST CSF 2.0 and NIST Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-03 | Rotation and expiry of privileged secrets are central to this shared control model. |
| NIST CSF 2.0 | PR.AC-4 | Least-privilege access across identity and network controls maps directly to this outcome. |
| NIST Zero Trust (SP 800-207) | SC-3 | Network segmentation and explicit enforcement support zero trust for privileged access. |
Tie privileged identity review to secret rotation and revoke stale credentials on every ownership or scope change.
