Treat passkey enrolment as a policy-controlled event, not a convenience step. Define which devices and operating systems can join the trust set, require ownership for recovery options, and review who can approve fallback access. The goal is to keep phishing resistance from turning into uncontrolled device and identity sprawl.
What governable passkey enrolment actually means for infrastructure access
Passkey enrolment is not just a sign-in preference, it is a trust decision that decides which device, operating system, and recovery path can be used to authenticate to sensitive infrastructure. For infrastructure access, the enrolment workflow should be treated like access provisioning, with clear ownership, approval, and revocation rules rather than self-service convenience.
The practical issue is that passkeys can improve phishing resistance while still creating governance risk if enrolment is open-ended. If any enrolled device becomes implicitly trusted, the control shifts from credential theft resistance to device sprawl, recovery abuse, and weak exception handling.
How to set enrollment rules without weakening phishing resistance
Start by defining who may enrol, what device classes are allowed, and which operating system versions or managed endpoints are in scope. The tighter the access context, the more important it is to separate initial enrolment from general sign-in, because the enrolment event creates a durable trust relationship that may outlive the device’s original security posture.
For infrastructure access, enrolment should normally require a managed or explicitly approved device, verified user ownership, and a documented recovery path. If teams permit synced passkeys, shared devices, or unmanaged endpoints, they need a compensating policy that states how device trust is established, how it is reviewed, and how it is removed when the device or user changes role.
Ownership matters because recovery is often where passkey governance fails. If a fallback method can be approved by a help desk queue, an overbroad admin group, or a loosely defined sponsor, the organisation can end up preserving access after the original trust signal has been lost.
Why fallback and recovery governance is the real control point
Recovery should be designed as a restricted administrative process, not an informal rescue path. That means approval should sit with a clearly accountable owner, recovery methods should be time-bound where possible, and every exception should be reviewable later as part of access governance.
For infrastructure access, the key question is not only whether the passkey itself is phishing-resistant, but whether the surrounding recovery process preserves that property. If a user can re-establish access through weak identity proofing or an ungoverned device change, the organisation has simply moved the attack surface from password theft to recovery abuse and account takeovers.
This is especially important where privileged infrastructure access is involved, because enrolment can become the easiest place to expand standing access unintentionally. A well-governed passkey program should therefore tie enrolment, recovery, and access review together instead of managing them as separate workflows.
How to keep passkey enrolment from creating identity sprawl
Teams should treat each enrolled passkey as part of an access inventory, with a clear owner, purpose, and lifecycle. That means tracking which devices are enrolled, whether they are personal or corporate, when they were approved, and how they are removed when the endpoint is lost, retired, or reassigned.
Good governance also depends on narrowing the set of people who can approve fallback access or exception enrolment. The smaller and more explicit that approval group is, the easier it is to detect drift, investigate unusual enrolment patterns, and prevent infrastructure access from becoming tied to a broad pool of informal recovery authority.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-63, NIST SP 800-53 Rev 5 and CIS Controls v8 set the technical controls, while ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-63 | Digital Identity Guidelines | Passkey enrolment and recovery depend on authenticator assurance and phishing-resistant authentication. |
| Recommendation — Use phishing-resistant authenticators and bind recovery to strong identity proofing. | ||
| NIST SP 800-53 Rev 5 | IA-5 — Authenticator Management | Passkey enrolment governs authenticator lifecycle, recovery, and revocation for infrastructure access. |
| IA-2 — Identification and Authentication (Organizational Users) | Infrastructure access requires controlled user authentication at enrolment and sign-in. | |
| Recommendation — Manage authenticator enrollment, replacement, and revocation under explicit policy. Require strong authentication before granting infrastructure access. | ||
| ISO/IEC 27001:2022 | A.5.15 — Access control | Enrolment policy defines who may join the trusted access set and under what conditions. |
| A.8.5 — Secure authentication | Passkeys are an authentication control whose secure use depends on enrolment and recovery governance. | |
| Recommendation — Define and enforce access admission rules for passkey enrolment. Constrain authentication setup and recovery to approved processes. | ||
| CIS Controls v8 | CIS-5 — Account Management | Passkey enrolment changes account access lifecycle and fallback approval paths. |
| CIS-6 — Access Control Management | Device admission and approval of fallback access are access-control decisions, not convenience steps. | |
| Recommendation — Inventory and govern accounts, recovery paths, and access exceptions. Restrict access paths to approved devices and authorised approvers. | ||
Practitioner Guidance
What to prioritise: Treat enrolment policy, not authenticator technology, as the first control. The most important decisions are which endpoints can join the trust set, who may approve recovery, and what evidence is required before an exception is accepted.
What to verify: Confirm that enrolment records show the enrolled device, approval path, recovery owner, and removal condition. If those fields are missing, the organisation cannot reliably distinguish secure enrolment from silent trust expansion.
Common mistake: Teams often roll out passkeys to reduce phishing risk but leave help desk resets, unmanaged devices, and broad fallback approval unchanged. That keeps the sign-in flow strong while weakening the surrounding governance that makes the control dependable.
Practitioner takeaway: Passkeys improve infrastructure access only when enrolment is governed as a privileged lifecycle event, with tight device admission, controlled recovery, and visible ownership for every exception.