TL;DR: Least privilege is widely understood but hard to operationalise because access accumulates through role changes, exceptions, shared credentials and machine workflows, according to SSH Communications Security. The real control problem is not policy intent but eliminating standing privilege so access expires by default, not by review cycle.
At a glance
What this is: This article explains why least privilege is easy to describe but hard to enforce once standing access, shared credentials and static roles accumulate.
Why it matters: It matters because IAM, PAM and NHI programmes fail when access reviews are used as a substitute for time-bound privilege design.
Context
Least privilege is the idea that an identity should have only the access required for a specific task, for only as long as that task needs it. In practice, organisations drift away from that model as roles change, exceptions accumulate and machine workflows are given broader permissions than their tasks require.
The governance gap is not the principle itself but the operational model behind it. When access remains valid after the need has passed, standing privilege becomes the default condition, and periodic review is left trying to correct what should have been ephemeral from the start.
Key questions
Q: What breaks when least privilege is missing?
A: When least privilege is missing, a single compromised identity can reach far more systems and data than the task requires. That increases lateral movement, magnifies the effect of stolen credentials, and makes recovery slower. The failure is not just more access, but larger blast radius.
Q: Why do shared administrator credentials create audit and security risk?
A: Shared credentials remove individual accountability, so investigators cannot tie actions to one person or one business purpose. That weakens forensic analysis, complicates compliance evidence, and increases the chance that misuse blends into normal administration. In practice, shared admin use means the organisation cannot prove access stayed within policy boundaries.
Q: How do security teams know whether least privilege is actually working?
A: Least privilege is working when identities have narrowly scoped permissions, unused credentials are removed or quarantined, and repeated access reviews consistently shrink entitlements. A good signal is whether a compromised identity would be unable to move beyond one bounded workflow. If broad resource reach still exists, the control is not effective.
Q: What should IAM and PAM teams do when access reviews keep finding exceptions?
A: Treat repeated exceptions as a design problem, not an audit nuisance. If the same access keeps reappearing, the role is too broad, the workflow is too slow, or the entitlement model does not match how work actually happens. Fix the access pattern, not just the review outcome.
Technical breakdown
Standing privilege turns least privilege into a snapshot problem
Standing privilege is access that remains available whether it is currently needed or not. Permanent admin accounts, shared passwords, static SSH keys and broad access groups all create that condition. The technical failure is not just excess permission, but duration without expiry. Once access is persistent, review cycles can only measure yesterday’s state while attackers can act against today’s exposure window.
Practical implication: treat privilege duration as a control variable, not an administrative afterthought.
Just-in-time access and just-enough access solve different parts of the problem
Just-in-time access controls when privilege exists. Just-enough access controls what that privilege can do. The first shortens the exposure window by issuing access only for an approved task, while the second narrows the blast radius by limiting systems, commands or applications. Used together, they replace a permanent entitlement model with task-scoped authorisation that is easier to audit and revoke.
Practical implication: design workflows so time limits and scope limits are enforced together, not treated as interchangeable.
Ephemeral credentials remove the reusable secret from the workflow
Ephemeral credentials are short-lived certificates or tokens issued dynamically at session start and removed after use. That changes the attack model because there is no long-lived password or SSH key left behind for reuse. In NHI terms, the control shifts from protecting a static secret to governing issuance, approval and expiry. That is why PAM becomes a lifecycle control, not just a vaulting layer.
Practical implication: move high-risk workloads from reusable secrets to short-lived credentials wherever the platform allows it.
Threat narrative
Attacker objective: The attacker wants durable privileged access that can be reused across systems without needing to re-compromise the identity.
- Entry begins when attackers obtain standing credentials such as a shared password, static SSH key or permanent administrator account.
- Credential access succeeds because the secret remains valid long after the original task or approval context has passed.
- Escalation follows when overprivileged accounts allow movement into systems unrelated to the user’s current responsibilities.
- Impact occurs when the attacker uses persistent privilege to reach critical systems, read sensitive data or alter production workflows.
Breaches seen in the wild
- Cisco Active Directory credentials leak 2025: Kraken leaked Cisco Active Directory hashes, including service and krbtgt accounts; Cisco says they came from its 2022 breach, not a new one.
- BeyondTrust breach 2024: A stolen BeyondTrust Remote Support API key let a China state-sponsored actor reset accounts and reach US Treasury workstations in 2024.
Read and download The State of NHI & AI Agent Breach Report 2026, covering 200+ breaches impacting Non-Human Identities including AI Agents.
NHI Mgmt Group analysis
Standing privilege is the control failure that makes least privilege look weaker than it is. The article is not describing a flaw in the principle, but a failure to make access end when the task ends. Permanent accounts, shared credentials and broad roles convert a policy objective into an inventory problem. The practitioner lesson is that access duration must be treated as a first-class governance variable.
Access review cadences cannot correct for privilege that should never have been standing. Reviews create a periodic snapshot, but the article shows how cloud and DevOps environments change faster than that cadence can follow. That means the governance assumption being violated is that permission state remains stable long enough to certify. The implication is that entitlement design must move upstream to issuance time.
Temporary access is only meaningful when the underlying secret is also temporary. If a password, SSH key or API credential can be reused after the task ends, then least privilege is only partial. The article usefully connects NHI practice to PAM by showing that reusable secrets and overbroad roles are the same governance failure in different forms. Practitioners should see secret lifetime and privilege scope as one problem.
Zero Standing Privilege is the practical destination of mature least-privilege design. The article’s strongest point is that privilege should be activated intentionally rather than left continuously available. That framing applies across human administrators, service accounts and automation. The implication for identity programmes is clear: if standing access remains normal, least privilege is still aspirational rather than enforced.
Ephemeral credential trust debt: organisations incur risk whenever a temporary access model still leaves behind reusable access paths, approval exceptions or static recovery mechanisms. The debt accumulates quietly because the policy language says access is temporary while the actual implementation preserves permanence through exceptions. That is the governance gap behind many least-privilege failures. The practitioner conclusion is to measure whether access truly disappears, not whether a workflow claims it does.
From our research library:
- Only 5.7% of organisations have full visibility into their service accounts, according to the Ultimate Guide to NHIs.
- 92% of cloud identities are over-permissioned and 62% are dormant.
- Read next: NHI Lifecycle Management Guide
What this signals
Access review programmes should be judged by whether they eliminate standing privilege, not by how many entitlements they recertify. When cloud and DevOps environments change faster than a review cadence, the real control point shifts to issuance time. That means IAM teams need to redesign approval and expiry logic before they rely on another attestation cycle.
Zero standing privilege is increasingly the operational expression of least privilege. Human admins, service accounts and automation all need access that disappears when the task is complete, otherwise reusable credentials become a permanent attack surface. The programme signal is simple: if privilege still exists after the task, the control has not yet been operationalised.
For practitioners
- Map every standing privilege path Inventory permanent administrator accounts, shared passwords, static SSH keys and broad access groups, then identify which ones survive after the original business need has ended.
- Convert recurring admin tasks to JIT workflows Route approved maintenance, deployment and troubleshooting access through time-bound requests so privilege exists only for the task window.
- Separate role scope from task scope Review privileged roles to ensure they limit systems, accounts, commands and applications, rather than simply renaming a highly privileged account.
Key takeaways
- Least privilege fails when access is still present after the task that justified it has ended.
- Standing privilege, shared credentials and static roles widen the window attackers can exploit.
- PAM makes least privilege enforceable only when access expires automatically and scope stays narrow.
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 NIST SP 800-53 Rev 5, NIST CSF 2.0 and CIS Controls v8 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-05 — Overprivileged NHI | The article centres on access granted more broadly than the task requires, including for service accounts and automation. |
| NHI-07 — Long-Lived Secrets | Static passwords and SSH keys remain valid long after the operational need ends, which is the article's core risk. | |
| Recommendation — Reduce overprivileged NHI access by scoping each identity to the minimum task and revoking excess permissions. Replace long-lived secrets with short-lived credentials and enforce automatic expiry wherever possible. | ||
| NIST SP 800-53 Rev 5 | AC-6 — Least Privilege | The article is fundamentally about enforcing least privilege across human and machine access paths. |
| IA-5 — Authenticator Management | Credential lifetime and replacement are central because standing secrets keep privilege usable after need has passed. | |
| Recommendation — Apply least-privilege authorisation so each identity receives only the access required for the current task. Manage authenticators so privileged credentials are issued, rotated and retired on a controlled lifecycle. | ||
| NIST CSF 2.0 | PR.AA-05 — Access Permissions, Entitlements and Authorizations | The governance problem is the persistence of entitlements beyond their business need. |
| Recommendation — Review entitlements so permissions expire when tasks, roles or approvals no longer justify them. | ||
| CIS Controls v8 | CIS-5 — Account Management | Permanent accounts, shared credentials and dormant privilege are account-management failures highlighted in the article. |
| Recommendation — Maintain account inventories and remove or disable accounts that no longer need privileged access. | ||
| MITRE ATT&CK | TA0006;TA0004;TA0008 — Credential Access; Privilege Escalation; Lateral Movement | The article describes how standing credentials become reusable entry points for escalation and movement. |
| Recommendation — Map standing-privilege exposures to credential access, privilege escalation and lateral movement threat paths. | ||
Key terms
- Standing Privilege: Standing privilege is access that remains active even when no immediate task requires it. For NHI programmes, it is a common failure mode because long-lived credentials and persistent roles create unnecessary exposure. Reducing standing privilege usually means tighter expiry, on-demand access, and clearer review of who or what still needs access.
- Just-in-time tool access: Just-in-time tool access means granting a testing agent only the permissions it needs for a specific task and only for the time required. In offensive AI workflows, this limits the blast radius if the system behaves unexpectedly or reaches beyond its intended scope.
- Ephemeral Credentials: Ephemeral credentials are short-lived access artefacts issued for a limited task or session. They reduce the window for abuse, but they only improve security when paired with strong scope limits, telemetry, and automatic revocation at task completion.
- Zero Standing Privilege: A control model in which an identity does not keep persistent access unless it is actively needed. For NHIs, this means credentials and permissions are issued for a narrow task and then removed. It reduces the time window and reuse value of stolen access.
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Published by the NHIMG editorial team on August 25, 2026.
Updated on October 11, 2026.
NHI Mgmt Group, the independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org