How should organisations scale PAM without losing control of privileged access?

Why This Matters for Security Teams

PAM does not fail because privileged access is a niche problem. It fails when privilege spreads faster than the control plane can keep up. As organisations add service accounts, cloud roles, third-party admins, and automation, the old model of a few vaults and periodic reviews stops reflecting reality. The result is not just more access, but less visibility into who or what can do damage.

That gap is well documented in Ultimate Guide to NHIs, which notes that 97% of NHIs carry excessive privileges and only 5.7% of organisations have full visibility into their service accounts. Those numbers matter because privileged access is now distributed across infrastructure, pipelines, and vendor integrations, not just admin workstations. Security teams that treat PAM as a vaulting exercise miss the operational problem: privilege has to be controlled continuously, not just stored centrally.

Current guidance from the OWASP Non-Human Identity Top 10 and NIST SP 800-53 Rev 5 Security and Privacy Controls points toward least privilege, traceability, and recurring review, but at scale those controls only work if they are built into access workflows. In practice, many security teams discover PAM sprawl only after a credential reuse event, rather than through intentional privilege design.

How It Works in Practice

Scaling PAM starts with a full inventory of privileged identities across humans, machines, cloud roles, emergency access, and vendor pathways. That inventory should distinguish static standing access from time-bound access, because the control strategy differs. For human admins, MFA, session recording, and approval workflows remain essential. For NHIs, the priority is usually workload identity, secrets centralisation, and short-lived access tokens issued only when a task requires them.

For many environments, the practical model is: centralise secrets in a managed vault, eliminate hard-coded credentials, and replace persistent privileges with just-in-time elevation where possible. JIT reduces the window in which a compromised account can be reused. It also improves attribution because access is tied to a task, a time window, and a policy decision. That approach aligns with the operational direction in Ultimate Guide to NHIs — Key Challenges and Risks, especially where service accounts and API keys outnumber human identities by orders of magnitude.

Implementation works best when PAM is tied to policy-as-code and continuous monitoring. A mature stack typically includes:

• centralised vaulting for human and machine secrets
• JIT access approvals for privileged sessions
• session recording and command logging for accountability
• rotation policies with explicit TTLs for credentials and tokens
• access review workflows that reconcile actual use against granted privilege

Operationally, this means the system should answer three questions at any moment: who has privilege, why they have it, and whether that privilege should still exist. These controls tend to break down in legacy environments where shared admin accounts, embedded credentials, and unmanaged third-party access remain embedded in operational tooling.

Common Variations and Edge Cases

Tighter PAM often increases operational overhead, requiring organisations to balance reduced attack surface against engineering friction and incident response speed. That tradeoff is real, especially in environments where availability targets are strict or where automation needs frequent privileged actions. Best practice is evolving, but there is no universal standard for how much privilege should be JIT-only versus permanently approved in every environment.

For example, break-glass accounts usually remain standing by design, but they should be isolated, heavily monitored, and tested on a schedule. Shared service accounts are another exception that often persists for compatibility reasons, yet they should be treated as transitional risk, not a normal state. The same applies to third-party access: BeyondTrust API key breach and similar incidents show how privileged vendor pathways can become high-impact entry points when credentials are long-lived or insufficiently scoped.

Guidance in the Ultimate Guide to NHIs — Why NHI Security Matters Now reinforces a practical point: scaling PAM is not just about vault adoption, but about governance maturity. If teams cannot map privilege to identity ownership, rotate access cleanly, and revoke it automatically when tasks end, PAM controls become a reporting layer rather than a protection layer.

Related resources from NHI Mgmt Group

• How should organisations use AI agents in access reviews without losing governance control?
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• How should organisations automate SaaS access requests without losing control?
• How should organisations control SaaS spend without losing governance over access?