How should security teams adopt passkeys for infrastructure access?

Start with the highest-risk interactive accounts, especially administrators who are exposed to phishing and push fatigue. Then tie enrolment to device trust, define recovery requirements, and keep terminal and break-glass workflows under separate policy. Passkeys improve authentication strength, but they only reduce risk when the surrounding identity process is controlled end to end.

Why This Matters for Security Teams

Passkeys matter most where infrastructure access still depends on passwords, OTPs, or push approvals that can be phished, replayed, or socially engineered. For administrators, that risk compounds because a single successful login can expose production systems, cloud control planes, and sensitive secrets. The practical goal is not just stronger authentication, but a cleaner identity boundary around privileged work.

That boundary is only useful if enrolment, recovery, and device trust are controlled together. The Ultimate Guide to NHIs is a useful baseline for understanding how identity failures become infrastructure failures, while the OWASP Non-Human Identity Top 10 shows why weak credential handling remains a recurring control gap across modern environments. Even though passkeys are a human identity control, they fit the same operational pattern: reduce standing credential exposure, then constrain the surrounding process.

Security teams also need to account for how administrators actually work. Terminal access, jump hosts, emergency access, and break-glass procedures often sit outside the polished login flow that passkey pilots start with. If those paths are not designed up front, users route around the new control and the risk simply moves elsewhere. In practice, many security teams encounter passkey failures only after recovery sprawl or exception handling has already weakened the deployment.

How It Works in Practice

Start with accounts that have the highest blast radius and the highest phishing exposure. That usually means cloud admins, SREs, platform engineers, database operators, and any account that can reach secrets stores or orchestration systems. Enrol passkeys only on managed devices that meet a device trust standard, and tie access to the device, the user, and the specific privilege tier. Current guidance suggests treating passkeys as one factor inside a broader access policy, not as a standalone cure.

Operationally, the best pattern is to combine passkeys with PAM, RBAC, and JIT elevation. Users authenticate with a phishing-resistant credential, request a bounded task, receive time-limited access, and lose it when the task ends. That reduces the value of a stolen session and limits what an attacker can do if a device is later compromised. For planning and rollout advice, the State of Non-Human Identity Security is relevant because it highlights how often organisations still struggle with credential hygiene and visibility around privileged access, and the same discipline applies to human admin workflows.

• Use passkeys first for the most exposed interactive admin accounts, not for every user at once.
• Require managed hardware, MDM posture, or equivalent device trust before enrolment.
• Keep recovery separate from everyday login, with stronger approval and audit.
• Preserve break-glass accounts in a distinct path so emergency access does not depend on the same control.
• Record authentication, elevation, and command context together so investigations can trace privilege use end to end.

Passkeys also work best when secrets are no longer shared broadly across teams, because a stronger login does not fix uncontrolled API keys, SSH keys, or long-lived admin tokens. These controls tend to break down when legacy terminals, unmanaged endpoints, and shared emergency accounts still need access without the same device trust guarantees.

Common Variations and Edge Cases

Tighter access control often increases operational friction, requiring organisations to balance phishing resistance against recovery speed, break-glass usability, and support overhead. That tradeoff is real, especially in infrastructure teams that run 24/7 and cannot tolerate long lockouts. Best practice is evolving, but there is no universal standard for how much recovery independence a privileged workflow should have.

Shared admin stations, contractor access, air-gapped systems, and service desks are the main edge cases. In those environments, passkeys may still be useful, but the deployment pattern changes. Shared workstations need strong session isolation. Contractors may require separately issued devices or tightly scoped access windows. Air-gapped or severely constrained systems may need a different authentication path entirely. The 52 NHI Breaches Analysis helps illustrate a broader lesson: credential strength alone rarely stops compromise if governance is weak around the identity lifecycle.

For teams seeking a broader control baseline, the Ultimate Guide to NHIs – Key Challenges and Risks is useful for mapping where identity sprawl, recovery gaps, and over-privilege show up together. The practical rule is simple: use passkeys to remove password risk, but keep the surrounding access model strict enough that a successful login does not automatically become full infrastructure control.

Related resources from NHI Mgmt Group

• How should security teams reduce MFA fatigue risk without weakening access control?
• How should security teams implement passwordless authentication without increasing access risk?
• How should security teams authenticate AI agents in enterprise environments?
• How should security teams implement Client ID Metadata Documents?