What do organisations get wrong about hardware security keys?

Why This Matters for Security Teams

hardware security key are widely recommended because they bind authentication to a physical device and reduce phishing risk, but organisations often misunderstand what the control actually covers. A key is not a complete identity programme; it is one layer in a broader lifecycle that includes enrolment, recovery, device replacement, privileged access, and offboarding. If those workflows are weak, attackers do not need to defeat the key itself.

This is where many programmes drift into false confidence. Teams deploy keys for executives or administrators, then leave password resets, help desk exception handling, and dormant account cleanup outside the design. That creates a support-channel bypass, which is often easier to abuse than the login screen. NIST’s NIST Cybersecurity Framework 2.0 frames this correctly as an identity and access governance problem, not just an authentication choice. NHIMG’s Ultimate Guide to NHIs makes the same lifecycle point for machine identities: security fails when the surrounding process is weak, even if the credential itself is strong.

In practice, many security teams encounter key bypasses only after a help desk reset path, recovery bypass, or unmanaged exception has already been abused.

How It Works in Practice

A well-designed hardware key programme starts with enrolment rules, not device purchase. Organisations should decide who can register a key, how many keys are required per user, what proofing is needed for replacement, and which accounts must never rely on a single recovery path. The strongest deployments pair the key with phishing-resistant authentication policies and remove fallback methods that reintroduce password or OTP risk.

The operational challenge is usually not the login flow itself. It is everything around it:

• Issue at least two keys for high-risk users so a lost device does not become a support emergency.
• Define reset and replacement workflows that require strong verification and recorded approval.
• Disable weaker fallback factors where the key is mandated, especially SMS and shared recovery codes.
• Treat offboarding as a revocation event, not a housekeeping task.
• Audit help desk scripts, since attackers often target the human support path rather than the cryptographic factor.

For privileged users, keys should sit inside a broader access model that includes least privilege, session controls, and step-up verification for sensitive actions. That is especially important when admins use shared consoles, cloud control planes, or remote support tools. Current guidance suggests the key should reduce account takeover risk, but it does not replace monitoring, conditional access, or identity lifecycle controls. The same lifecycle discipline appears in NHIMG’s research on secrets governance, where the real failure is often unmanaged exposure after issuance rather than the secret format itself.

The Ultimate Guide to NHIs also highlights why revocation discipline matters: once an identity artifact is left active beyond its intended use, compromise windows widen fast. These controls tend to break down in large service desks and federated environments because recovery ownership, app-level policy, and directory policy are rarely aligned.

Common Variations and Edge Cases

Tighter key enforcement often increases support overhead, requiring organisations to balance phishing resistance against recovery speed and user friction. That tradeoff is real, especially for remote staff, contractors, and executives who travel with limited access to corporate support channels.

Some environments have additional edge cases. Shared workstations, break-glass accounts, and regulated operational technology often cannot follow the same pattern as standard employee accounts. Best practice is evolving here, and there is no universal standard for this yet. In some cases, a hardware key is only one control in a layered approach that also includes device posture, network restrictions, and tightly governed emergency access.

Another common mistake is assuming a key solves social engineering by itself. It reduces phishing, but it does not eliminate consent phishing, malicious app authorisation, or insider abuse of a legitimate session. Organisations also sometimes forget that account recovery can be the weakest link in outsourced IT, where a third-party help desk may have more influence over identity recovery than the security team. For that reason, recovery and replacement procedures should be tested as rigorously as the login flow, with clear ownership for every exception.

NHIMG’s Ultimate Guide to NHIs shows the same pattern in non-human identity programmes: when exceptions, rotation, and offboarding are not governed end to end, the strongest credential still leaves a gap.

Related resources from NHI Mgmt Group

• What do security teams get wrong about rotating SSH keys?
• What do organisations get wrong about Salesforce integration security?
• What do organisations get wrong about AI security coverage?
• What do organisations get wrong about reactive identity security spending?