How should teams govern physical security keys for password manager access?

Why This Matters for Security Teams

Physical security keys are often treated as a “stronger login” control, but for password manager access they are really a high-assurance identity path with operational consequences. If a key is issued loosely, cloned into recovery workflows without oversight, or left active after role changes, the password manager becomes easier to reach than the policies around it suggest. That creates a mismatch between authentication strength and lifecycle governance.

This matters because password managers usually sit at the center of secrets distribution, admin access, and emergency recovery. A lost or stale key can become a durable bypass if teams do not control enrollment, storage, and revocation with the same rigor they apply to vault permissions. NHI Mgmt Group’s Ultimate Guide to NHIs notes that 71% of NHIs are not rotated within recommended time frames, which is a reminder that lifecycle drift is a common failure mode across identity systems, not just API keys.

Current guidance from NIST Cybersecurity Framework 2.0 and the OWASP Non-Human Identity Top 10 both point toward governance, inventory, and revocation discipline rather than assuming the authenticator itself solves the problem. In practice, many security teams discover weak key governance only after a lost device, an offboarding event, or a backup-path abuse has already expanded access.

How It Works in Practice

Teams should govern password-manager keys as managed authenticators, not personal conveniences. That means defining who may enroll a key, what assurance level is required, where recovery material is stored, and how quickly access is removed when the key is lost, replaced, or no longer needed. The goal is to make the authentication path auditable from issuance to retirement.

Operationally, that usually includes:

• Restricting key enrollment to approved administrators or joiner-mover-leaver workflows.
• Recording key serials or device identifiers in an inventory for traceability.
• Requiring protected storage for backup codes, recovery kits, or secondary authenticators.
• Setting clear revocation SLAs for lost, stolen, or dormant keys.
• Revalidating key holders after role changes, contractor exits, or privilege increases.

For teams with broader NHI programs, this fits the same lifecycle discipline described in NHIMG’s Ultimate Guide to NHIs — Lifecycle Processes for Managing NHIs and the NHI Lifecycle Management Guide. The practical lesson is simple: strong authenticators still need an owner, a record, a revocation path, and a fallback path that is harder to abuse than the primary one. This is where the broader risk picture from NHIMG’s Ultimate Guide to NHIs — Key Challenges and Risks becomes relevant, because unmanaged credentials tend to persist longer than teams expect.

These controls tend to break down in distributed or high-churn environments where staff use multiple devices, shared admin coverage is common, and recovery steps are handled informally.

Common Variations and Edge Cases

Tighter key governance often increases support overhead, so organisations have to balance user convenience against recovery risk. That tradeoff is especially visible when executives, incident responders, or small security teams need fast access to a password manager without creating an untracked exception.

One common variation is shared admin coverage. Current guidance suggests avoiding shared physical keys, but if an emergency break-glass path is unavoidable, it should be separately logged, time-bounded, and reviewed after use. Another edge case is remote or hybrid work, where keys may be paired with roaming devices, which raises the question of physical possession versus continuous control. There is no universal standard for this yet, but the safer pattern is to tie the key to a named person, a managed device, and a documented recovery process.

Teams should also be careful with backup codes. Those are not a casual convenience; they are recovery secrets and should be handled like privileged credentials. NHIMG’s Top 10 NHI Issues and 52 NHI Breaches Analysis both reinforce the same operational point: when lifecycle controls are weak, the most trusted access path often becomes the easiest one to forget.

Related resources from NHI Mgmt Group

• How should security teams govern API keys used for generative AI access?
• How should security teams govern non-human identities that have persistent access?
• How should security teams govern Azure Key Vault access for applications?
• How should security teams store high-value crypto seed phrases in a password manager?