Passkeys shift customer authentication away from password risk

At a glance

What this is: This is an analysis of passkeys as a passwordless authentication model that uses public key cryptography and device unlocks instead of shared secrets.

Why it matters: It matters to IAM and CIAM teams because passkeys reduce password risk, but they also shift trust, recovery, and device-binding decisions into the identity layer.

By the numbers:

• 33% of respondents indicated feeling frustrated when they have to create a password that meets specific requirements.
• 63% of respondents report that at least once a month, they’re unable to log in to an account because they forgot their username or password.
• 83% of customers abandon account creation due to tedious password policies.

👉 Read Okta's article on passkeys and passwordless customer authentication

Context

Passkeys are a password replacement that uses public key cryptography and device-based unlocking instead of a shared password. The important governance shift is that authentication no longer depends on secrets that users choose, reuse, or forget, which removes one class of risk while creating new questions about device trust, recovery, and platform dependency.

For IAM and CIAM teams, the real issue is not whether passkeys are stronger than passwords. It is whether the organisation can support them without weakening account recovery, device enrolment, or step-up decisions for higher-risk actions. That makes passkeys part of a broader NHI and identity governance conversation, not just a frontend login change. For background on NHI lifecycle and credential handling, the Ultimate Guide to NHIs is a useful reference.

The article's starting point is typical for consumer identity: friction is obvious, and password pain is easy to measure. The harder work begins when teams map passkey convenience to policy, fallback paths, and assurance levels across different user journeys.

Key questions

Q: How should security teams roll out passkeys without breaking account recovery?

A: Start with low-risk journeys, then define recovery as a controlled identity workflow rather than a convenience feature. Use step-up verification, help-desk approval, and audit logging for resets. The goal is to keep passwordless sign-in simple while making fallback paths stricter than the primary login path. That is where most account abuse begins.

Q: What is the difference between synced passkeys and device-bound passkeys?

A: Synced passkeys can move across a user’s devices through a cloud or ecosystem service, which improves convenience and recovery. Device-bound passkeys stay on the original device and usually provide tighter locality and stronger containment. The right choice depends on whether the business values portability more than device isolation and operational control.

Q: Why do passkeys reduce phishing risk compared with passwords?

A: Passkeys are bound to the original website and use cryptographic proof instead of a reusable secret. That means a fake site cannot harvest a password and replay it later. The phishing benefit is real, but it only holds if the organisation also limits weak fallback methods that attackers can abuse instead.

Q: Should organisations replace passwords everywhere with passkeys immediately?

A: No. Organisations should prioritise high-volume, high-friction consumer flows first, then expand where device support and recovery controls are mature. Immediate replacement can create support gaps if the fallback model is weak. A staged rollout lets teams verify assurance, usability, and operational readiness before eliminating passwords more broadly.

Technical breakdown

How passkey authentication works with public key cryptography

Passkeys replace a shared password with a public and private key pair. The public key is registered with the service, while the private key stays on the user’s device and never leaves it. During sign-in, the server issues a challenge that the private key can sign only after the user unlocks the device with a biometric, PIN, or pattern. The server then verifies the signature using the stored public key. This removes password replay, credential stuffing, and most phishing paths because there is no reusable secret to steal.

Practical implication: Treat passkeys as an authentication method that changes the threat model, not as a cosmetic login upgrade.

Synced passkeys versus device-bound passkeys

Synced passkeys can move across devices within an ecosystem through a cloud service or password manager, which improves recovery and convenience. Device-bound passkeys remain on the device where they are created, including hardware security keys that support the standard. The governance difference matters because synced passkeys reduce user friction while increasing dependence on the ecosystem provider’s account recovery and sync controls. Device-bound models improve containment but can increase operational burden when devices are replaced or lost.

Practical implication: Decide which accounts need synced convenience and which require stronger device locality and tighter control.

Why passkeys reduce phishing but do not remove identity governance

Passkeys are phishing-resistant because they are bound to the website that created them and cannot be reused at another site. They also eliminate password databases as a high-value target. But the identity problem does not end there. Organisations still need recovery workflows, device enrolment controls, assurance policies, and fallback authentication paths for users without supported devices. In practice, passkeys move the attack surface from password theft to enrolment abuse, recovery hijack, and weak fallback configuration.

Practical implication: Govern passkeys as part of the full authentication lifecycle, including recovery and fallback paths.

Breaches seen in the wild

• Shai Hulud npm malware campaign — Shai Hulud campaign: npm malware exposed secrets on GitHub.
• Reviewdog GitHub Action supply chain attack — reviewdog/action-setup GitHub Action supply chain attack exposed secrets.

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

NHI Mgmt Group analysis

Passkeys are a security control, but they are also a governance control. The technical advantage is clear: they remove shared passwords from the authentication flow and make phishing materially harder. The governance consequence is less obvious but more important for practitioners. Once passwords are removed, policy must decide which identities can rely on device unlock, which require stronger assurance, and how recovery is handled when the device is unavailable. The control objective shifts from secret protection to authentication assurance, and that requires identity teams to define the fallback model before adoption scales.

Synced passkeys create an ephemeral credential trust debt. Convenience improves when passkeys follow the user across devices, but that convenience introduces dependency on cloud sync, ecosystem recovery, and account takeover protections outside the immediate application boundary. Teams should not assume that passwordless automatically means lower risk. The real question is whether the sync layer, device enrolment process, and recovery path together meet the assurance level the application actually needs.

Passwordless adoption will expose weak fallback authentication faster than it removes risk. Most organisations do not fail at the primary login path first. They fail when users cannot recover access, when help desks override policy, or when step-up controls are inconsistent across channels. Passkeys force those weaknesses into view. That is useful, because broken recovery is often where account compromise begins. Practitioners should treat fallback flows as part of the attack surface, not as operational exceptions.

Passkeys fit zero trust only when the surrounding identity model is explicit. Zero trust is about continuous verification, and passkeys improve the initial verification step. They do not automatically solve session risk, privileged access, or trust in device state after authentication. If organisations adopt passkeys without aligning assurance, session duration, and recovery controls, they will replace one weak control with a more complex but still inconsistent one. The answer is to integrate passkeys into a broader authentication policy, not to let them stand alone.

From our research:

• 91.6% of secrets remain valid five days after the targeted organisation is notified, showing a critical gap in remediation procedures, according to Ultimate Guide to NHIs.
• 79% of organisations have experienced secrets leaks, and 77% of those incidents resulted in tangible damage.
• For lifecycle and offboarding context, Ultimate Guide to NHIs explains why rotation and revocation must keep pace with exposure.

What this signals

Passkey programmes will only reduce identity risk if fallback paths are governed with the same rigour as primary authentication. The next failure mode for many organisations is not password compromise but unmanaged recovery. Teams should map where assurance drops during device replacement, help-desk recovery, and cross-device sync, then align those flows to policy rather than convenience.

Passwordless adoption is a useful forcing function for identity modernisation. When user friction falls, organisations can finally separate authentication quality from memorability. That should push IAM teams to review step-up logic, session policies, and recovery ownership across the full journey, not just the first login.

The strongest programme response is to treat passkeys as one layer in a broader authentication architecture. That means pairing them with device trust, adaptive access decisions, and explicit fallback governance rather than assuming the new credential format closes the risk gap on its own.

For practitioners

• Implement passkeys for high-friction consumer journeys Start with sign-up, sign-in, and account recovery flows where password friction drives abandonment. Use passkeys to reduce login failure rates, but keep a measured fallback path for unsupported devices and account recovery.
• Define assurance tiers for synced and device-bound passkeys Map which applications can accept synced passkeys and which require device-bound credentials or hardware-backed authentication. Align this decision to data sensitivity, transaction risk, and recovery tolerance.
• Harden account recovery and help-desk workflows Treat recovery as a privileged identity path. Require strong verification, audit trails, and policy checks before resetting authentication or issuing fallback access.
• Review fallback methods before broad rollout Inventory every non-passkey path, including SMS, email recovery, and legacy passwords. Remove or restrict weak options so the passwordless programme does not inherit the same abuse paths it was meant to replace.

Key takeaways

• Passkeys remove passwords from the authentication flow, but they do not remove the need for identity governance.
• The main operational risk shifts to recovery, fallback methods, and device trust rather than password theft.
• Organisations should adopt passkeys in stages, starting with high-friction journeys and tightly controlled fallback paths.

Key terms

• Passkey: A passkey is a passwordless credential based on public key cryptography. A private key stays on the user’s device, while a public key is stored by the service. During login, the device signs a challenge after local unlock, which reduces phishing and eliminates shared secret reuse.
• Synced Passkey: A synced passkey is a passkey that can be made available across multiple devices through a cloud or ecosystem service. It improves convenience and recovery, but it also introduces dependency on the sync layer and the provider’s account protections, which becomes part of the identity assurance model.
• Device-Bound Passkey: A device-bound passkey remains on the device where it was created and does not travel through account sync. This increases locality and containment, but it can make device replacement and account recovery more operationally complex for the organisation.
• Phishing-Resistant Authentication: Phishing-resistant authentication is a sign-in method that cannot be easily replayed by a fake website or attacker-controlled prompt. Passkeys achieve this by binding the credential to the legitimate origin and using cryptographic proof instead of a reusable password.

Deepen your knowledge

Passkeys, passwordless authentication, and identity assurance are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are planning a staged rollout or need to govern fallback paths, it is worth exploring.

This post draws on content published by Okta: Passkeys for passwordless customer authentication. Read the original.