Passwordless PAM still needs privileged access controls and ZSP

At a glance

What this is: This is an analysis of what passwordless really means for privileged access management, with the central finding that removing passwords does not eliminate privileged access risk.

Why it matters: It matters because IAM and NHI teams still have to govern service accounts, root access, backup paths and session controls even if human logins move to passkeys or biometrics.

👉 Read CyberArk's analysis of what passwordless really means for PAM

Context

Passwordless authentication changes how users prove who they are, but it does not change the need to govern what privileged identities can do once access is granted. In IAM terms, the authentication layer may shift from passwords to passkeys or biometrics, while the authorization and session-control problem remains intact. That distinction is central for NHI governance because many high-risk access paths are tied to service accounts, root credentials, shared admin accounts and application secrets.

For security leaders, the real issue is not whether passwords disappear from the user experience. It is whether the organisation can still enforce least privilege, isolate sessions, audit privileged activity and remove standing access when identities are ephemeral or shared. That is why passwordless is best treated as one input to privileged access design, not as a replacement for PAM or for broader identity controls.

Key questions

Q: How should security teams use passwordless authentication without weakening PAM?

A: Use passwordless as a front-end authentication improvement, not as a replacement for privileged governance. Keep least privilege, session isolation, session recording and rapid revocation in place so the access path remains controlled after the user authenticates. The main risk is assuming that removing passwords also removes the need to manage privileged behaviour.

Q: What is the difference between passwordless authentication and zero standing privilege?

A: Passwordless changes how an identity proves itself at login. Zero standing privilege changes whether elevated access exists at all before and after the task. In practice, passwordless may reduce credential exposure, but ZSP reduces the blast radius by making privilege temporary, task-specific and removable after use.

Q: Why do passwordless logins still need strong access controls?

A: Because a valid passwordless factor can still be stolen, abused or misused. Once authenticated, an over-privileged identity can move laterally, access sensitive systems or trigger harmful actions. Strong access controls matter because the real security boundary is not the login method alone, but the scope and duration of the resulting session.

Q: Should organisations prioritise passwordless or privileged access modernisation first?

A: Most organisations should modernise privileged access controls first or in parallel, because the highest risk usually sits in service accounts, root access and shared administrative paths. Passwordless can improve user experience, but it does not address over-privilege, shared credentials or poor auditability on its own.

Technical breakdown

Why passwordless authentication still leaves privileged access risk

Passwordless methods replace a knowledge factor with possession or inherence factors, but they do not remove the underlying trust relationship between an identity and a resource. If a passkey store is compromised, a device is stolen, or biometric factors are bypassed, the attacker still arrives with valid authentication. In privileged environments, that is only the first gate. The deeper control question is whether the session is isolated, the privileges are minimal, and the activity is observable. This is why passwordless and PAM are complementary rather than interchangeable.

Practical implication: Keep privileged session controls in place even when users authenticate without passwords.

Why service accounts and root access remain outside passwordless assumptions

Many machine and administrative identities still depend on secrets because systems, cloud roots and registration workflows were not designed around human-style passwordless flows. Shared privileged accounts add another constraint, since multiple operators may need controlled access to the same target. In those cases, passwordless authentication can simplify the front door, but it does not solve lifecycle governance for the identity itself. The access object still needs rotation, isolation, auditability and offboarding rules. That is an NHI management problem, not only an authentication problem.

Practical implication: Treat privileged machine and shared admin identities as governed NHI assets with explicit lifecycle controls.

How zero standing privilege changes the posture of passwordless PAM

Zero standing privilege means permissions are created only when a task requires them and removed immediately afterward. In a passwordless context, that matters because the absence of a password does not reduce the impact of an over-privileged session. ZSP narrows the blast radius by limiting how long elevated access exists and by tying entitlements to a specific time, task and approval state. For cloud and hybrid estates, this is often more durable than trying to eliminate every credential at once.

Practical implication: Use JIT and ZSP to reduce the window of misuse rather than relying on passwordless alone.

Threat narrative

Attacker objective: The attacker wants valid privileged access that survives the passwordless front end and still enables control of high-value systems.

1. Entry occurs when an attacker compromises a passwordless factor such as a stolen hardware key, exposed passkey store or abused biometric trust path.
2. Escalation follows if the authenticated identity has standing privilege, shared admin rights or access to machine secrets that were not isolated.
3. Impact comes from lateral movement or privileged misuse across cloud, endpoint or application environments despite the absence of a password in the login flow.

Breaches seen in the wild

• MongoBleed breach — MongoBleed exposed secrets across 87K MongoDB servers.
• Shai Hulud npm malware campaign — Shai Hulud campaign: npm malware exposed secrets on GitHub.

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

NHI Mgmt Group analysis

Passwordless is an authentication change, not an identity governance model. Removing passwords changes how access starts, but it does not answer who can do what, for how long, or under which approvals. That means the control plane still has to manage session scope, entitlement scope and audit scope. For practitioners, the correct read is that passwordless reduces one class of exposure while leaving the NHI governance problem intact.

Privileged access remains a blast-radius problem, even when credentials are abstracted. A passkey, biometric factor or hardware token can still authenticate a session that is far too powerful. The field should stop treating password removal as a destination and instead treat it as an input to least privilege, session isolation and privileged session recording. The practical conclusion is that PAM still owns the last mile of control.

Ephemeral access is the more durable security pattern than passwordless branding. The useful shift is toward task-scoped access, short-lived entitlements and verifiable audit trails. That aligns better with zero standing privilege than with any promise of fully credential-free access. For security teams, the governance question is whether each privileged action can be time-bound, reviewable and revoked on demand.

Shared admin access exposes the limits of user-centric passwordless design. Many of the riskiest identities are not owned by one person and do not behave like normal employee logins. They require rotation, segregation and operational oversight, which means identity security for NHI assets must extend beyond user authentication factors. Practitioners should manage shared and machine identities as controlled infrastructure, not as convenience logins.

Compliance will keep privilege controls relevant long after passwordless adoption grows. Auditors still expect evidence of least privilege, MFA-like assurance, policy-based rotation and reviewable privileged activity. Even if passwordless reduces friction for end users, it does not eliminate the need for defensible controls over the highest-risk access paths. The field should prepare for a hybrid reality in which passwords shrink, but governance expands.

From our research:

• The average estimated time to remediate a leaked secret is 27 days, despite 75% of organisations expressing strong confidence in their secrets management capabilities, according to The State of Secrets in AppSec.
• Organisations maintain an average of 6 distinct secrets manager instances, creating fragmentation that undermines centralised control, according to The State of Secrets in AppSec.
• For the lifecycle view behind passwordless and ephemeral access, see Ultimate Guide to NHIs , Lifecycle Processes for Managing NHIs for provisioning, rotation and offboarding controls.

What this signals

Ephemeral credential trust debt: passwordless adoption can lower password exposure while leaving privileged trust paths largely intact. The operational debt appears when organisations assume the front door is solved and defer the hard work of session control, entitlement cleanup and audit reconstruction. For IAM and NHI programmes, passwordless should trigger stronger governance, not weaker scrutiny.

The control model that matters next is one that ties authentication to task scope, duration and review. As passwordless expands across humans and machines, the programme question becomes whether the organisation can still explain who had elevated access, why it existed and when it disappeared. That is where lifecycle management becomes the differentiator, not the login method alone.

For practitioners

• Separate authentication from privileged governance Map which identities can use passwordless factors and which still require managed secrets, session isolation and explicit approval. This avoids assuming that a passkey removes the need for privileged session control.
• Apply zero standing privilege to elevated sessions Create entitlements only for the approved task, then revoke them immediately after use. Pair task-scoped access with time/duration controls and session recording so the privilege window stays narrow.
• Treat service accounts as governed NHI assets Inventory shared admin accounts, root accounts and machine identities, then assign owners, rotation rules and offboarding requirements. A passwordless user model does not replace lifecycle controls for these identities.
• Retain audit visibility for passwordless sessions Record privileged sessions across endpoints, cloud workloads and web apps so investigators can reconstruct high-risk actions regardless of the initial authentication factor. Auditability matters even when passwords are absent.

Key takeaways

• Passwordless reduces one class of exposure, but it does not remove the need to govern privileged access, shared accounts or machine identities.
• The hard security problem shifts from password theft to session scope, privilege duration and audit visibility.
• Teams should modernise PAM and NHI lifecycle controls in parallel with passwordless adoption to keep the blast radius small.

Key terms

• Passwordless Authentication: An authentication approach that replaces passwords with factors such as possession or inherence. It can reduce phishing and password theft, but it does not eliminate the need to govern privilege, session scope or recovery paths in high-risk environments.
• Zero Standing Privilege: A control pattern in which elevated access does not exist until it is explicitly needed, approved and provisioned. It reduces the window in which misuse can occur and is especially relevant for cloud, administrative and non-human identities.
• Privileged Session Isolation: A design that keeps high-risk administrative activity away from the user’s direct workstation and normal network path. It limits the effect of compromised endpoints by routing privileged work through controlled intermediaries with monitoring and recording.
• Shared Privileged Account: An administrative identity used by more than one operator or system process. These accounts are common in infrastructure and cloud operations, but they create accountability and lifecycle challenges because access must be tightly controlled, rotated and audited.

Deepen your knowledge

Passwordless authentication and privileged access modernisation are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are balancing user experience with control over high-risk access, it is worth exploring.

This post draws on content published by CyberArk: What ‘Passwordless’ Really Means for Privileged Access Management. Read the original.