Passkey authentication: are your controls keeping up?

TL;DR: Passkeys reduce brute-force and phishing exposure by replacing reusable passwords with device-bound, time-limited authentication factors, according to 1Kosmos. The real issue is not whether passkeys work, but whether organisations can govern device compromise, fallback paths, and lifecycle controls without recreating password-era risk.

NHIMG editorial — based on content published by 1Kosmos: passkey authentication work and its security implications

Questions worth separating out

Q: How should security teams roll out passkeys without creating lockout risk?

A: Start by inventorying every authentication, recovery, and help-desk path that can still grant access if the passkey is unavailable.

Q: Why do passkeys reduce phishing risk but not eliminate identity risk?

A: Passkeys remove reusable secrets from the login flow, so phishing sites cannot harvest a password that works elsewhere.

Q: What do organisations get wrong when they treat passkeys as a full password replacement?

A: They assume the cryptography solves the governance problem.

Practitioner guidance

• Map every fallback and recovery path Document what happens when a user loses the device that holds the passkey, including help-desk resets, backup factors, and temporary access paths.
• Harden device trust before broad rollout Require managed devices, enrollment checks, and endpoint assurance for the accounts that will rely on passkeys.
• Retire password bypasses in parallel Audit all applications, service desks, and exception workflows for legacy login paths that still accept reusable passwords or weak recovery questions.

What's in the full article

1Kosmos's full article covers the operational detail this post intentionally leaves for the source:

• Step-by-step explanation of how passkey enrolment and sign-in work across devices
• Practical comparison of passkeys, MFA, and passwordless login in user-facing workflows
• Implementation considerations for compatibility, training, and rollout planning
• Vendor-specific examples of how passkey authentication is positioned for corporate and public-sector use

👉 Read 1Kosmos's full guide to passkey authentication and passwordless login →

Passkey authentication: are your controls keeping up?

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