A team rolls out passkeys, then an old work password appears in an exposure finding. Is the alert obsolete? Only if the team has answered a more useful question: where could that password still matter?
A passkey deployment changes a sign-in path. It does not, by itself, describe every application, recovery route, or session connected to an account.
Start with the service, not the slogan
FIDO explains that passkeys use public-key credentials instead of a shared password for authentication. That distinction is why a copied password cannot simply substitute for the passkey at a passkey-only sign-in. See FIDO's passkey overview.
The operational question is whether the affected service is actually passkey-only. A new primary login screen can coexist with legacy sign-in, local accounts, or recovery options. Ask the service owner to document the routes that remain available, rather than relying on the rollout announcement.
For an exposure review, separate three statements: the account has a passkey; password sign-in is disabled; and recovery has been reviewed. They are different assertions and need different evidence.
Trace the remaining dependencies
Use a short review sheet:
| Area | Question for the owner |
|---|---|
| Primary sign-in | Can this account still authenticate with a password? |
| Recovery | What can replace or reset the enrolled authenticator? |
| Existing access | Which sessions or application grants remain active? |
| Other services | Was the old password reused somewhere else? |
A hypothetical example makes the distinction clear. Alex uses a passkey for company email but still has a password-based account at an external support portal. The email protection is valuable. It does not remove the need to assess the support account.
Do not test an exposed password against either service. Confirm configuration and current account status through authorized administration tools.
Treat the endpoint as a separate question
A stronger sign-in mechanism does not establish that the browser or device is healthy. If there is independent evidence of endpoint compromise, route that concern to the endpoint response team.
Likewise, a credential exposure finding does not independently prove that a device was infected. Keep the two evidence streams connected without pretending that one automatically answers the other.
Close the finding with a reason
A useful resolution records which service was reviewed, whether password sign-in remained possible, what recovery controls were checked, and whether related accounts required action. “Passkeys enabled” is a milestone, not a complete investigation note.
For adjacent questions, read why MFA does not make exposed passwords irrelevant and why session revocation is a separate response step. The aim is to narrow uncertainty, not discard a finding because the organization adopted a newer authentication method.