Secretless access and passwordless identity reduce NHI risk

At a glance

What this is: This is an Akeyless analysis of why static secrets remain the main NHI risk in modern cloud and microservice environments, and why secretless access shifts the control point to short-lived credentials.

Why it matters: IAM, PAM and cloud security teams need to understand that removing long-lived secrets changes how machine identity, remote access and privilege governance must be designed across human and non-human estates.

👉 Read Akeyless' analysis of secretless access and passwordless identity for NHI risk

Context

Managing passwords, API keys and SSH keys becomes harder as environments move toward multi-cloud, microservices and automated deployment. The governance problem is not just secret storage, but the fact that long-lived credentials create a persistent compromise window that existing identity controls often assume will remain stable long enough to review.

The article contrasts human identity management with machine identity management. For humans, passwordless SSO and MFA reduce password theft and reuse risk; for machines, static secrets are replaced with dynamic credentials issued on demand, which changes the control point from stored secrets to time-bound authentication.

Key questions

Q: What breaks when privileged access still depends on standing secrets in cloud environments?

A: Standing secrets create a durable attack path because the credential remains usable long after the original task has ended. In cloud and automation-heavy environments, that means one leak can enable reuse, lateral movement, and hidden inheritance across services. The control failure is persistence, not just exposure.

Q: Why do passwordless and secretless controls reduce identity risk differently?

A: Passwordless controls remove reusable human passwords from the login path, which reduces theft and reuse risk for administrators and employees. Secretless controls do the same for workloads by replacing static machine secrets with short-lived, on-demand credentials. The distinction matters because humans and services fail in different ways, even when both depend on identity.

Q: How do security teams know when short-lived credentials are actually working?

A: They are working when access is issued only for a specific task, expires automatically and leaves no reusable secret behind in code, logs or endpoints. If credentials continue to persist across sessions or can be reused outside the original purpose, the control has not shifted from storage to governance.

Q: Should organisations prioritise secret rotation or secret discovery first?

A: They should do both, but rotation is the control that reduces immediate exposure when a secret is already live. Discovery tells you where the problem is. Rotation and revocation tell you whether the credential still works. If you can only choose one urgent action after a leak, invalidate the credential and confirm it is no longer active.

Technical breakdown

Why static secrets fail in cloud and microservice identity

Static API keys, SSH keys and tokens are durable by design, which makes them easy to distribute but hard to govern in environments where workloads scale up and down continuously. In Kubernetes and similar platforms, that durability becomes liability because the credential often outlives the workload, the operator and sometimes the original purpose. The result is a large exposed window for compromise, reuse and lateral movement. Secretless access changes the mechanism by issuing short-lived credentials at request time instead of persisting reusable secrets in endpoints or repositories.

Practical implication: treat long-lived machine credentials as a control failure, not just a hygiene issue.

How passwordless identity changes human access risk

Passwordless authentication shifts human access away from reusable passwords toward stronger factors such as SSO-backed login or biometric methods. That removes two of the most common identity failure modes: password theft and password reuse across systems. For privileged administrators, this matters because remote access often remains the highest-risk human entry point into cloud and infrastructure systems. The architectural point is not that passwords are inconvenient, but that reusable human secrets create the same persistence problem as machine secrets when they are embedded in access workflows.

Practical implication: privileged human access should be designed so that no reusable password is needed for routine admin entry.

Why short-lived credentials matter more than static token inventory

Short-lived credentials move the security boundary from stored secret management to issuance policy. That matters because the highest-risk states in non-human identity are not always the secret itself, but the period during which it can be reused, copied or passed between services. JIT tokens, ephemeral API tokens and short-lived SSH certificates reduce that reuse window, but they only work if issuance, scope and expiry are tightly governed. In NHI terms, the control objective becomes limiting privilege duration rather than merely counting secrets.

Practical implication: govern credential lifetime, scope and issuance as a single control surface.

Threat narrative

Attacker objective: The attacker objective is to turn a single exposed secret into durable authenticated access across cloud services, servers or workloads.

1. Entry occurs when a reusable API key, SSH key or password is exposed in a cloud or microservice workflow and can be copied before anyone notices.
2. Credential access follows because the stolen secret authenticates as the workload or administrator without a separate, time-bound proof of intent.
3. Escalation happens when the same credential can be reused across databases, servers or cluster components with more access than the original task required.
4. Impact is persistent access to infrastructure, data stores or privileged admin paths until the credential is found and revoked.

Breaches seen in the wild

• 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.
• Microsoft SAS token exposure 2023: An over-permissive Azure SAS token in a Microsoft AI GitHub repo exposed 38TB, including workstation backups and Teams messages, for 3 years.

Read and download The State of NHI & AI Agent Breach Report 2026, covering 150+ breaches impacting Non-Human Identities including AI Agents.

NHI Mgmt Group analysis

Static secrets are the real governance debt in modern identity programmes: the problem is not only exposure, it is persistence. Long-lived credentials are designed for reuse, but cloud and microservice environments now expect identities to appear, authenticate and disappear continuously. That mismatch means traditional review and rotation routines often arrive after the risk has already moved on. Practitioners should treat secret lifetime as a first-class governance variable.

Secretless access narrows the compromise window, but it also changes the control model: the centre of gravity moves from vaulting to issuance. Once a credential is short-lived and generated on demand, the security question becomes who can request it, under what scope and for how long. That is a different governance problem than storing a secret safely, and it aligns more closely with NHI lifecycle control than with static credential inventory.

Passwordless human access and secretless machine access should be governed together: the article usefully shows that the human and machine sides of identity are converging on the same principle, namely removing reusable secrets from the path. The distinction now lies in how assurance is established, not whether a password exists. Organisations that separate human IAM from machine identity governance miss the shared risk surface created by remote access, admin workflows and automation.

Ephemeral credential trust debt: this is the gap created when programmes still assume an identity artefact will persist long enough to be reviewed, rotated or revoked. In dynamic environments, the artefact may already be gone before those controls run. The implication is that governance has to move upstream to issuance policy, not remain anchored to post-issuance review.

From our research library:

• 30.9% of organisations store long-term credentials directly in code, according to the Ultimate Guide to NHIs.
• 71% of NHIs are not rotated within recommended time frames, increasing the risk of compromise over time, according to the Ultimate Guide to NHIs.
• Read next: Just-in-Time Access and Zero Standing Privilege Guide

What this signals

Ephemeral credential trust debt: programmes that still anchor governance in post-issuance review will keep missing the risk surface created by dynamic infrastructure. When access is generated per task, the real control question is whether issuance policy is narrow enough to prevent reuse, not whether a vault contains the secret.

Passwordless authentication for humans and secretless authentication for machines are converging on the same governance principle: remove reusable credentials from the path. That convergence matters because remote administration, CI/CD and Kubernetes operations increasingly blend human and machine access in the same workflow.

For practitioners

• Map where reusable secrets still exist Inventory API keys, SSH keys, passwords and certificates across cloud, Kubernetes and remote access paths, then identify which ones can be replaced by short-lived credentials.
• Separate human and machine access governance Apply different control patterns to administrators and workloads so that passwordless SSO, MFA and secretless authentication are governed as distinct access models.
• Reduce standing credential duration Replace long-lived machine secrets with ephemeral tokens or certificates issued only for the task, and define expiry as part of the access policy.
• Review privileged remote access paths Check whether remote database, Linux and Kubernetes access still depends on reusable credentials, especially where privileged operators can reach production systems.

Key takeaways

• Static secrets remain a durable attack path in cloud and microservice environments because they can outlive the workload and the operator.
• The evidence in the article points to a shift from secret storage toward on-demand issuance, especially for short-lived machine credentials.
• Teams that still rely on review, rotation and revocation alone will miss the control problem unless they also reduce the lifetime of the credential itself.

Key terms

• Secretless Authentication: Secretless authentication is a pattern that keeps long-lived credentials out of application code and runtime memory wherever possible. Instead of exposing secrets directly to workloads, the access path mediates credential delivery at connection time, reducing the chance that stolen configuration or code reveals reusable access.
• Passwordless Authentication: An authentication approach that removes passwords and uses a device-bound cryptographic key plus local user verification. It reduces phishing and replay risk, but it only improves assurance when enrollment, recovery, and revocation are tightly governed.
• Long-Lived Credential: A long-lived credential is a secret that remains valid well beyond the original task or session that used it. In identity security, this includes tokens, keys, and API credentials that can be reused after theft, which increases blast radius, complicates attribution, and makes revocation a reactive control instead of a preventive one.
• 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.

What's in the full article

Akeyless' full article covers the operational detail this post intentionally leaves for the source:

• Examples of secretless access for PostgreSQL, MySQL, Linux and Kubernetes workflows
• How short-lived SSH certificates and ephemeral API tokens are applied in practice
• The article's incident examples linking compromised credentials to remote access and admin risk
• A closer look at the SPIFFE integration and how workload identity fits into the model

👉 The full Akeyless article covers remote databases, Linux servers, Kubernetes clusters and incident examples in more operational detail.

Deepen your knowledge

NHI governance, agentic AI identity, and machine identity lifecycle are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are responsible for identity security strategy or NHI governance in your organisation, it is worth exploring.