How do organisations know whether passwordless access is actually improving security?

Look for reduced password dependence, fewer lockouts, lower help desk reset volume, and stronger control over high-risk workflows such as shared workstation access and privileged clinical systems. If user friction drops while identity assurance rises, the programme is moving in the right direction.

Why This Matters for Security Teams

Passwordless access is only an improvement if it reduces the attack surface and not just the number of passwords people see. Security teams need evidence that phishing resistance, session binding, and high-risk workflow protection are improving at the same time. For NHI-heavy environments, that means watching how access behaves across service accounts, shared systems, and automation paths, not just human login screens. NHIMG’s Ultimate Guide to NHIs shows why this matters: only 5.7% of organisations have full visibility into their service accounts, which makes it easy to miss where weaker authentication is being replaced by equally weak operational controls.

The right question is whether passwordless reduces dependence on reusable secrets, strengthens identity assurance at the point of access, and lowers the likelihood of privilege misuse. Current guidance suggests that teams should measure more than adoption rates. They should compare lockouts, reset tickets, fraud alerts, and access exceptions before and after rollout, then validate whether privileged workflows are now gated by stronger controls such as device trust, step-up checks, or PAM. The OWASP Non-Human Identity Top 10 is useful here because it reminds teams that authentication changes do not automatically fix identity governance gaps. In practice, many security teams discover weaker control paths only after a privileged workflow or shared device has already been abused, rather than through intentional testing.

How It Works in Practice

Start by defining a baseline, then compare it against post-deployment metrics that reflect real security outcomes. Useful indicators include password reset volume, MFA fatigue incidents, help desk lockout calls, shared workstation access events, privileged access exceptions, and the number of workflows still relying on fallback secrets. For NHI and automation-heavy environments, this should also include secret sprawl, service account visibility, and whether short-lived tokens replace long-lived credentials. NHIMG research in the Ultimate Guide to NHIs — Key Challenges and Risks notes that 97% of NHIs carry excessive privileges, which is a strong reminder that authentication improvements are hollow if authorisation remains broad.

• Measure whether passwordless reduces dependency on reusable passwords, shared secrets, and manual resets.
• Check whether privileged workflows now require stronger policy, such as device posture, step-up approval, or PAM-backed JIT access.
• Validate whether session tokens are short lived and tied to the right workload or device identity.
• Review exception handling for shared terminals, clinical systems, and offline recovery paths.

For technical validation, align monitoring with the OWASP Non-Human Identity Top 10 and use frameworks such as NIST Zero Trust principles to confirm that authentication strength is matched by continuous authorisation. Where possible, compare pre-rollout and post-rollout incident data, not just login success rates. These controls tend to break down when shared clinical devices, legacy apps, or unattended kiosks still depend on fallback accounts because identity proofing and session continuity cannot be enforced consistently.

Common Variations and Edge Cases

Tighter passwordless controls often increase operational overhead, so teams have to balance user convenience against recovery complexity, device lifecycle management, and exception handling. Best practice is evolving for environments where passwords disappear at the front door but legacy systems still accept them at the back door. That is especially true in healthcare, where shared workstations, break-glass access, and intermittent connectivity can force carefully limited fallback paths.

One common edge case is when passwordless reduces phishing risk for humans but leaves service accounts, API keys, and automation secrets untouched. In that situation, the programme may look successful while the highest-risk access paths remain unchanged. NHIMG’s 52 NHI Breaches Analysis is a useful reminder that identity failures often move into non-human paths when human authentication gets stronger. Another edge case is identity assurance drift: if device trust, session revocation, and recovery procedures are weak, passwordless can become a better user experience with little security gain. The practical test is simple: if a compromised device, over-privileged account, or stale exception can still reach the same sensitive workflow, the security uplift is partial at best.

Related resources from NHI Mgmt Group

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• How do organisations know whether PAM is actually covering privileged access?