Passkeys and passwords: what changes for enterprise identity security

At a glance

What this is: This is a comparison of passwords and passkeys that concludes passkeys materially improve authentication security by removing shared secret exposure and reducing phishing risk.

Why it matters: It matters because IAM teams have to decide how to modernise authentication without breaking identity lifecycle, federation, device recovery, and regulatory controls across users and third-party access.

By the numbers:

• Password-based attacks over 99% of daily identity attacks, according to Microsoft.
• 75% of US consumers would stop buying from a brand after a cyber incident, according to a current study cited in the article.

👉 Read GlobalSign's analysis of passkeys versus passwords for enterprise authentication

Context

Passkeys are a passwordless authentication method based on public-private key pairs, while passwords are shared secrets that users can reuse, guess, or expose through phishing and malware. For IAM teams, the issue is not only stronger login security, but how authentication methods fit the rest of the identity programme, including federation, device trust, and recovery.

The article is really about authentication governance, not just login convenience. It shows that moving from passwords to passkeys changes the operational model for identity security, especially where organisations must support SSO, PKI, and regulated access for employees, contractors, and service partners.

Key questions

Q: How should security teams roll out passkeys without breaking identity operations?

A: Start with applications that already support modern federation and have clear recovery workflows, then expand by risk tier. The critical work is not the cryptography itself but enrolment, device recovery, offboarding, and audit logging. If those controls are weak, passkeys can improve login security while leaving identity operations fragile.

Q: Why do passkeys reduce phishing risk more effectively than passwords?

A: Passkeys keep the private key on the device and never send the secret across the network, so attackers cannot steal a reusable credential from a fake login page. That removes the main object phishing campaigns target. The remaining risk shifts to device compromise, recovery abuse, and weak lifecycle management.

Q: What do organisations get wrong when they treat passkeys as a complete security fix?

A: They often focus on login hardening and ignore account recovery, offboarding, and third-party access. Passkeys improve authentication, but they do not fix weak authorisation, poor auditability, or broken identity lifecycle processes. If those remain unchanged, the organisation has only moved the risk boundary.

Q: Should organisations replace passwords everywhere with passkeys immediately?

A: Not necessarily. The right approach depends on application support, user population, device coverage, and recovery maturity. Organisations should replace passwords first where phishing exposure and operational overhead are highest, then keep passwords only where the business still needs a fallback path and can govern it tightly.

Technical breakdown

How passkeys change authentication trust in IAM and SSO

Passkeys replace memorised shared secrets with a cryptographic challenge-response flow. The public key is registered with the service, while the private key stays on the user device and is unlocked locally with biometrics or a PIN. That means the secret is never transmitted over the network, which removes the main phishing target that passwords create. In federated environments, this shifts trust from what the user knows to what the device can prove. It also changes recovery and enrolment, because the identity system must bind the credential to the right device and account lifecycle.

Practical implication: treat passkey rollout as an identity architecture change, not a simple credential swap.

Why password fatigue and reuse remain a governance problem

Password fatigue is the predictable outcome of too many login requirements, too many systems, and too many resets. Users respond by reusing passwords, making small variations, or delaying updates, which increases exposure to brute force, credential stuffing, and phishing. Even when password managers are available, the underlying issue remains that the credential is a reusable secret that can be copied, harvested, or replayed. For identity teams, this is a governance problem because authentication controls only work if user behaviour and operational support make them sustainable.

Practical implication: reduce reliance on user-managed password behaviour where the business can support stronger authentication.

How PKI and passkeys intersect with certificate lifecycle management

Passkeys fit naturally into public key infrastructure because both rely on key pairs and proof of possession. That creates a governance overlap with certificate lifecycle management, including provisioning, rotation, revocation, and device recovery. If an organisation already manages certificates for applications or documents, it can often adapt some of the same lifecycle discipline to passkeys, but it still needs clear enrolment rules, auditability, and offboarding paths. The technical point is that stronger cryptography does not remove lifecycle obligations; it changes where those obligations sit.

Practical implication: align passkey programmes with existing certificate and identity lifecycle controls before broad deployment.

NHI Mgmt Group analysis

Passwords are now a governance liability, not just a user inconvenience. The article correctly frames passwords as vulnerable to reuse, phishing, and predictable human behaviour. That matters because the control failure is not only technical weakness but the dependence on users to safely manage shared secrets at scale. For practitioners, the conclusion is that password-heavy programmes are increasingly expensive to defend and harder to justify in high-risk environments.

Passkeys reduce shared-secret exposure, but they do not eliminate identity lifecycle work. A passkey still needs enrolment, device binding, recovery, revocation, and auditability. The article’s PKI discussion is the right clue: once the secret moves into device-bound cryptography, the governance problem shifts from password policy to lifecycle control. Practitioners should treat passkeys as a stronger authentication primitive, not as a finished identity programme.

Authentication modernisation only works when federation and access control are considered together. Passkeys may improve the login event, but they do not solve authorisation, third-party access, or application-level trust. That is why the article’s references to SAML, OAuth 2.0, OIDC, and compliance are important. The practical conclusion is that identity teams need to evaluate authentication changes in the context of broader access architecture, not as isolated point solutions.

Passkey adoption will accelerate the convergence of human IAM and lifecycle governance. The more organisations standardise passwordless access, the more they need repeatable rules for device recovery, account recovery, and offboarding. This is where IAM, PKI, and access governance begin to overlap in operational practice. Practitioners should assume that passkey programmes will expose weak identity lifecycle processes rather than hide them.

From our research:

• 80% of identity breaches involved compromised non-human identities such as service accounts and API keys, according to the Ultimate Guide to NHIs.
• 96% of organisations store secrets outside of secrets managers in vulnerable locations including code, config files, and CI/CD tools.
• For lifecycle and revocation context, the Ultimate Guide to NHIs shows why credential governance must extend beyond user login methods.

What this signals

Passkey programmes will expose weak identity lifecycle handling faster than they eliminate password risk. If an organisation cannot reliably enrol, recover, and revoke credentials, passwordless authentication simply relocates the operational weakness. The practical signal is that IAM teams should treat passkey rollout as a test of lifecycle maturity, not a discrete authentication upgrade.

With 97% of NHIs carrying excessive privileges, the broader lesson is that authentication improvements rarely compensate for poor entitlement design. Stronger login methods matter, but they do not correct standing access, weak offboarding, or broken audit trails. Identity teams should use passkey adoption to reset expectations for end-to-end governance.

Lifecycle discipline becomes the differentiator: organisations that can tie credential issuance, device trust, and offboarding into one governed process will absorb passwordless change more safely than those relying on ad hoc help desk handling. That is where authentication modernisation either becomes durable or creates new support debt.

For practitioners

• Map passkey readiness across applications and recovery flows Inventory which business applications support passkeys, which still require passwords, and where account recovery depends on help desk intervention or manual resets. Prioritise high-risk applications first, especially those exposed to phishing or shared external access. suggested_anchor
• Redesign enrolment and offboarding for device-bound credentials Define how new devices are trusted, how lost devices are handled, and how passkeys are revoked when a user leaves or a device is compromised. Build these rules into joiner-mover-leaver processes so the credential lifecycle is explicit rather than implicit.
• Align passkeys with PKI and federation controls Check that passkey adoption does not bypass certificate governance, SSO policy, or audit logging. Where PKI already exists, reuse the lifecycle discipline for provisioning, revocation, and evidence collection instead of treating passkeys as a separate island.
• Measure where passwords still drive operational burden Track password resets, phishing-related incidents, and help desk time spent on credential recovery to identify where password dependency is creating avoidable risk and cost. Use those metrics to decide where passkeys should replace passwords first.

Key takeaways

• Passkeys improve authentication by removing reusable shared secrets, which makes phishing materially harder.
• Password risk remains operationally expensive, from reset overhead to breach exposure and user fatigue.
• The decisive issue is lifecycle governance, because device binding, recovery, and revocation determine whether passkeys are sustainable.

Key terms

• Passkey: A passkey is a device-bound credential built on a public-private key pair. The private key never leaves the user’s device, while the public key is registered with the service. That design reduces phishing exposure and shifts governance toward enrolment, recovery, and device trust.
• Password Fatigue: Password fatigue is the behavioural and operational burden created when users must manage too many secrets across too many systems. It drives reuse, weak variation, and delayed updates, which makes authentication easier to attack and harder for support teams to sustain.
• Public Key Infrastructure: Public key infrastructure is the trust framework that manages digital certificates, key pairs, and the processes around issuance and revocation. In identity programmes, it provides the technical and governance foundation for strong authentication, but it still depends on lifecycle controls and auditability.
• Authenticator Lifecycle: Authenticator lifecycle is the governed process that covers enrolment, use, replacement, recovery, and revocation of credentials or keys. It is the control layer that determines whether stronger authentication methods remain manageable once they are deployed at scale.

What's in the full article

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

• Step-by-step comparison of password and passkey authentication flows across real enterprise use cases.
• Practical guidance on deciding where passkeys fit alongside SSO, PKI, and certificate-based authentication.
• Questions to use when planning migration timelines, user readiness, and support impact.
• Compliance considerations for regulated environments that must balance usability with stronger identity assurance.

👉 GlobalSign's full article covers the practical comparison points for authentication strategy and migration planning.

Deepen your knowledge

NHI governance, agentic AI identity, and machine identity security are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are responsible for identity security strategy or identity lifecycle management, it is worth exploring.