Credential management best practices for NHI and privileged access

At a glance

What this is: This is a primer on credential management that frames credentials as digital keys and ties the practice to least privilege, rotation, MFA, and lifecycle control.

Why it matters: For IAM and NHI practitioners, it matters because unmanaged credentials remain one of the most common paths into systems, especially when service accounts, API keys, and privileged sessions are not governed end to end.

By the numbers:

• Over 54% of security incidents stem from credential theft.
• 59% of organizations do not manage credentials effectively.
• 42% of employees share their login credentials with their teammates.

👉 Read StrongDM's guide to credential management best practices

Context

Credential management is the set of controls used to store, issue, rotate, monitor, and retire credentials that prove identity to systems. In NHI terms, that includes passwords, tokens, certificates, API keys, and service-account material, all of which can outlive the task they were meant to support if lifecycle ownership is weak.

The gap is not only technical storage. It is the combination of over-provisioning, shared access, stale accounts, and incomplete offboarding that turns credentials into standing risk. That pattern is common in enterprise environments, especially where machine identities are growing faster than the governance model built to contain them.

Key questions

Q: How should security teams manage credentials for non-human identities?

A: Security teams should treat non-human credentials as lifecycle-bound identity artifacts, not static secrets. That means assigning an owner, limiting scope, shortening lifetime, rotating on schedule, and revoking access automatically when the workload changes or ends. The goal is to reduce standing access and make every credential traceable to a specific business function.

Q: When does credential management matter most for NHI risk reduction?

A: It matters most when credentials are reused across systems, stored in code or config, or tied to privileged access. Those conditions turn a single exposure into broad compromise potential. Programs that focus only on storage miss the bigger issue, which is how long a stolen credential remains valid and what it can reach.

Q: What is the difference between secret storage and credential governance?

A: Secret storage is where credentials are kept. Credential governance is the full control set around ownership, issuance, rotation, monitoring, access scope, and revocation. A vault can reduce exposure, but governance determines whether the secret remains useful to an attacker and whether the organisation can remove access quickly enough.

Q: Why do NHIs complicate zero trust architecture?

A: NHIs complicate Zero Trust because they often use long-lived credentials, operate continuously, and require machine-to-machine access across many systems. That makes continuous verification harder unless the organisation enforces short-lived credentials, narrow entitlements, and session-level monitoring. Without those controls, Zero Trust becomes a label rather than an operating model.

Technical breakdown

Why credential lifecycle control matters for NHI governance

Credential lifecycle control covers issuance, use, rotation, suspension, and revocation. In practice, this is where non-human identities diverge from human users because service accounts and API keys often remain valid long after the original workload changes. Without a clear owner and expiry discipline, credentials become durable access artifacts rather than temporary proof of identity. The operational problem is not just theft. It is persistence. Once a secret is embedded in code, config, or a shared tool, remediation becomes distributed across teams and systems, which slows response and widens exposure windows.

Practical implication: Map every credential to an owner, an expiry condition, and a revocation path before it is granted.

How secrets managers and temporary credentials change the attack surface

Secrets managers centralize storage and rotation, but they only reduce risk when applications stop treating secrets as static inputs. Temporary credentials, short-lived tokens, and brokered access reduce the window in which stolen material can be reused. That shifts attacker economics by making interception less useful and by forcing repeated authentication or token exchange. For NHI governance, the key point is that storage alone is not control. A secret manager that holds long-lived credentials still leaves blast radius intact if access is overbroad or rotation is rare.

Practical implication: Prefer short-lived credentials and brokered access over static secrets wherever the workload architecture allows it.

What least privilege means for privileged sessions and machine identities

Least privilege for non-human identities means each credential should authorize only the narrow action set needed for a specific workload or session. That is harder than human IAM because machine access often spans databases, CI/CD pipelines, cloud control planes, and internal APIs. If a service account can do more than one job, compromise of that account becomes a multiplier. Session logging and audit trails matter here because privilege without traceability is ungovernable. In NHI environments, least privilege must be enforced at the credential, session, and workload layer, not only at the role layer.

Practical implication: Review machine roles for task-scoped permissions and remove any standing access that is not operationally necessary.

Threat narrative

Attacker objective: The attacker aims to turn a valid credential into durable, low-friction access that blends into normal system activity.

1. Entry occurs when a credential is exposed through weak storage, sharing, or hardcoded placement in code, config, or tooling.
2. Escalation follows when the stolen credential has excessive privileges or broad reuse across environments.
3. Impact is achieved when the attacker uses the identity to access systems, exfiltrate data, or maintain persistent access under a legitimate account context.

Breaches seen in the wild

• Sisense breach — unauthorized GitLab access led to exfiltration of access tokens, API keys and certificates.
• IOS app secrets leakage report — iOS apps leaking hardcoded secrets and credentials endangering user privacy.

Read our 52 NHI Breaches Analysis report for a comprehensive view of breaches impacting Non-Human Identities including AI Agents.

NHI Mgmt Group analysis

Credential management is now an NHI governance problem, not just a password problem. The article correctly treats passwords, certificates, tokens, and keys as a single control surface, but that surface now includes workloads and agents that authenticate without human prompting. Once machine identities enter the picture, lifecycle discipline becomes the real security boundary. Practitioners should stop treating credentials as static assets and start treating them as governed identity objects.

Static credential storage creates trust debt that compounds over time. A secret manager reduces exposure only when it is paired with short-lived credentials, tight role scoping, and automated revocation. Otherwise, the organization is just centralizing long-lived risk instead of removing it. The result is a larger blast radius when an account or token is compromised, which makes rotation cadence and expiry policy the decisive controls.

Least privilege has to be enforced at the session layer, not only in policy documents. Machine identities often span multiple systems, so role design alone does not prevent privilege creep. Session recording, task-scoped entitlements, and brokered access are what turn policy into something auditable. Security teams should measure whether each credential can be justified by a specific workload action and eliminate everything else.

Offboarding and re-assignment are underappreciated failure points in NHI programs. The article’s emphasis on deprovisioning older accounts maps directly to the common enterprise pattern where ownership disappears before access does. That is how service accounts, API keys, and vendor access linger past their useful life. The governance answer is explicit ownership, automated revocation, and periodic review of every non-human identity.

Zero Trust only works for non-human identities when trust is continuously re-earned. Static credentials and overextended sessions undermine the verify-always model because they let one successful authentication become durable access. NHI programs need evidence-based authentication, continuous authorization, and narrow privilege scope to make Zero Trust real rather than aspirational. Practitioners should treat credential management as the control plane for Zero Trust adoption.

From our research:

• 97% of NHIs carry excessive privileges, increasing unauthorised access and broadening the attack surface, according to the Ultimate Guide to NHIs.
• 71% of NHIs are not rotated within recommended time frames, which means stale access remains a structural control gap across many environments.
• Use Ultimate Guide to NHIs , Lifecycle Processes for Managing NHIs to turn rotation and offboarding into measurable operational controls.

What this signals

Ephemeral credential trust debt: the more an organisation relies on temporary access without disciplined revocation and ownership, the more risk accumulates in the background. Credential management programmes now need to measure lifetime, scope, and revocation success, not just where secrets are stored.

With only 5.7% of organisations having full visibility into their service accounts, the operational issue is usually discovery before control. That makes inventory, ownership assignment, and remediation sequencing the first real milestones for any NHI programme.

Practitioners should align credential governance with the NIST Cybersecurity Framework 2.0 and the OWASP Non-Human Identity Top 10 so that access, monitoring, and recovery are treated as one operating model rather than separate projects.

For practitioners

• Inventory every credential type across human and non-human identities Build a single inventory for passwords, API keys, certificates, tokens, and service-account credentials, then map each item to an owner and system of record. Use the inventory to expose unmanaged secrets in code, config files, and CI/CD tooling.
• Replace standing access with task-scoped, temporary credentials Issue temporary security credentials where possible, and set explicit expiry windows aligned to the workload or approval window. This reduces replay value if a secret is exposed and makes access review more objective.
• Automate rotation and revocation for high-risk secrets Use rotation policies for secrets that authenticate to cloud services, databases, and internal APIs, then verify that revocation actually breaks old access paths. Tie rotation to change events, not only to calendar intervals.
• Restrict privileged sessions and log every elevated action Route privileged access through monitored sessions, record commands or queries where feasible, and review anomalies on a defined cadence. Pair this with least-privilege roles so the session logs show only defensible activity.
• Strengthen onboarding and offboarding for all identities Automate creation, review, reassignment, and retirement of accounts and keys so that no credential survives the worker, workload, or vendor relationship that created it. Include third-party privileged access in the same process.

Key takeaways

• Credential management is an NHI control problem because secrets, tokens, and keys can outlive the systems that use them.
• Excess privilege and slow rotation turn a single exposed credential into a broad and persistent access risk.
• The practical response is lifecycle governance, short-lived access, and monitored privilege, not storage alone.

Key terms

• Credential Management: Credential management is the practice of governing how credentials are issued, stored, used, rotated, monitored, and retired. In NHI programmes, it applies to passwords, tokens, certificates, API keys, and service-account material that can create persistent access if lifecycle controls are weak.
• Non-Human Identity: A non-human identity is any machine or software entity that authenticates to systems and data. That includes service accounts, API keys, tokens, certificates, workloads, bots, and AI agents. These identities need ownership, privilege boundaries, and lifecycle control just like human accounts.
• Secret Sprawl: Secret sprawl is the uncontrolled distribution of credentials across code, configuration files, CI/CD systems, devices, and shared tools. It increases the chance that a secret is copied, reused, or exposed, and it makes discovery and revocation slower when a compromise occurs.

Deepen your knowledge

Credential lifecycle governance is a core topic in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are formalising controls for service accounts, API keys, and privileged sessions, it is worth exploring.

This post draws on content published by StrongDM: What Is Credential Management? 8 Best Practices to Know. Read the original.