Passkeys and passwords can sit in the same vault, but they behave differently. Passwords are reusable secrets that users type and attackers can steal or reuse. Passkeys are cryptographic credentials used through a provider, so they are not memorised, phishable in the same way, or intended for manual entry. That makes passkeys a stronger authentication method for modern login.
How passkeys differ from passwords in the same vault
Passkeys and passwords can live side by side in a vault, but they are not interchangeable assets. A password is a shared secret that the user can type, copy, reuse, and accidentally expose. A passkey is a cryptographic credential that relies on public-key cryptography, so the vault usually stores and protects a private key or a device-bound credential rather than a memorised secret. That means the vault is managing a different trust model, not just a different label for login data.
For practitioners, the most important difference is operational: a password vault mainly protects reusable text secrets, while a passkey vault is part of a stronger authentication workflow that depends on device trust, key protection, and the authentication provider. If the vault is compromised, the blast radius is not identical. Exposed passwords can often be reused elsewhere, while passkeys are designed to be far harder to phish and harder to replay outside the intended flow.
That distinction matters because secrets sprawl is still a real problem; NHIMG’s 2024 State of Secrets Management Survey found that 88% of security professionals are concerned about it, which is why identity teams need to separate credential types instead of treating every vault entry as the same control object.
What changes in practice when the vault stores passkeys
In practice, a password manager that also stores passkeys becomes part credential store, part authentication orchestrator. The vault may synchronise passkeys across devices, unlock them with biometrics or a local PIN, and hand off signing operations to the browser or operating system during login. The user still experiences “log in through the vault,” but the underlying mechanism is different: the service verifies possession of a private key and often a local user gesture, rather than comparing an entered secret to a stored hash.
That difference affects how teams should think about exposure and recovery. With passwords, the main risks are reuse, phishing, weak entropy, and password reset abuse. With passkeys, the main risks shift toward account recovery design, device compromise, sync-provider trust, and whether the vault can export or replicate keys in ways that weaken the intended protection. A passkey stored in a vault is usually still better than a password stored in the same vault, but only if the vault keeps the key material well protected and the service supports a sensible recovery path.
- A password can usually be copied into another site; a passkey is meant to stay bound to the intended relying party.
- A password may be recovered by knowledge-based or email-based reset flows; a passkey often depends on a stronger device or account recovery process.
- A stolen password is often immediately reusable; a stolen passkey is harder to exploit outside the protected authentication flow.
If you want a practical background on why secret handling still fails at scale, NHIMG’s Guide to the Secret Sprawl Challenge is useful because it shows how centralised storage does not automatically mean safe lifecycle control. These controls tend to break down when organisations sync the same vault across unmanaged personal devices because the device becomes the real trust anchor, not the vault UI.
Where the comparison gets tricky
Tighter passkey handling often improves security, but it also introduces a real tradeoff: stronger authentication can make recovery, migration, and shared access more complex. That is especially true when a vault is both the storage layer and the synchronisation layer, because losing access to the vault may mean losing access to the passkey and to the account recovery path at the same time. Best practice is evolving here, and there is no universal standard for every consumer and enterprise vault design.
The other edge case is enterprise rollout. Passwords and passkeys may both sit in the same product, yet governance should treat them differently. Password policies focus on length, uniqueness, rotation exceptions, and breach exposure. Passkey policies focus more on device enrolment, user verification, phishing resistance, backup and recovery, and whether the organisation can revoke or rebind credentials when a device is lost or an employee leaves. If teams flatten those differences, they usually end up with a “modern login” label but legacy operational assumptions.
NIST Cybersecurity Framework 2.0 is useful here because it reinforces that authentication choices should be governed as part of overall protect and recover outcomes, not as a one-time product feature decision. The key distinction is simple: passwords are reusable secrets, while passkeys are managed credentials with a stronger cryptographic trust model and a different failure surface.
Risk and Threat Considerations
The main risk is misclassification. When organisations store passkeys and passwords in the same vault but govern them as if they carry the same exposure, they can underestimate both phishing resilience and recovery risk. A password vault compromise can lead to immediate credential reuse; a passkey vault compromise more often shifts the problem toward device trust, sync compromise, or account recovery abuse.
Failure mechanism: Attackers typically target the weakest adjacent control, such as vault access, synced device sessions, recovery email, or help-desk reset workflows. Passwords are directly replayable, while passkeys are usually abused through credential theft around the credential, not by simple reuse of the secret itself.
Impact: The result can be account takeover, identity recovery lockout, or a false sense of safety where password hygiene improves on paper but the recovery process remains the easiest path into the account.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
MITRE ATT&CK address the attack and risk surface, while CIS Controls v8 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| CIS Controls v8 | 6 — Access Control Management | Separates and governs credential access by type and privilege. |
| 5 — Account Management | Covers lifecycle, recovery, and revocation for user accounts and credentials. | |
| Recommendation — Enforce distinct controls for passwords and passkeys to reduce credential misuse. Review account recovery and revocation paths for passkey-backed logins. | ||
| NIST CSF 2.0 | PR.AA — Identity Management, Authentication, and Access Control | Addresses authentication design and control selection for modern login methods. |
| PR.DS — Data Security | Covers protection of sensitive credential material stored in a vault. | |
| Recommendation — Align passkey and password governance to authenticated access requirements. Protect stored credential material with stronger safeguards and segregation. | ||
| MITRE ATT&CK | T1110 — Brute Force | Passwords remain reusable secrets vulnerable to guessing and spraying. |
| T1556 — Modify Authentication Process | Credential and recovery workflow abuse can bypass intended authentication controls. | |
| Recommendation — Hunt for password spraying and strengthen resistance to reusable-secret attacks. Audit authentication and recovery flows for abuse paths and privilege bypass. | ||
Practitioner Guidance
What to prioritise: Separate policy and monitoring for passwords versus passkeys even if they are stored in the same vault. The control objective is not “everything in one place,” but “each credential type has the right recovery, revocation, and device-trust rules.”
What to verify: Confirm whether the vault supports secure export, re-binding, and revocation for passkeys without weakening them into reusable secrets. Also verify who can recover the vault itself, because vault recovery often becomes the real privilege boundary.
What practitioners underestimate: Many teams focus on phishing resistance and miss the recovery channel. If an attacker can reset the vault, intercept sync, or hijack the account recovery path, the passkey advantage can be eroded even though the credential itself remains cryptographically strong.
Practitioner takeaway: Treat passwords as reusable exposure and passkeys as managed cryptographic credentials, then govern the vault around the recovery path, because that is usually where the real difference becomes operationally important.
Related resources from NHI Mgmt Group
- What is the difference between protecting stored passwords and protecting the systems around a password manager?
- What is the difference between storing TOTP codes in a password manager and using a standalone authenticator app?
- What is the difference between a cloud password manager and a self-hosted password vault?
- What is the difference between stronger account passwords and auto-lock policies in a password manager?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on September 10, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
