How should IAM teams reduce account takeover risk without relying on passwords?

Use passwordless methods that bind authentication to a secure device, cryptographic proof, or a physical approval action, then apply them first to the highest-risk journeys. The control only works if recovery, enrollment, and transaction approval are designed as part of the same assurance model, not bolted on later.

Why This Matters for Security Teams

Password theft is still one of the easiest ways to turn a single compromised account into broader access, but the larger issue is that passwords create a reusable secret that can be phished, replayed, or harvested from downstream systems. For IAM teams, the goal is not just to remove the password prompt; it is to replace it with an assurance model that resists account takeover during sign-in, recovery, and step-up approval.

That matters because the highest-risk journeys are often the least mature. Enrollment flows, account recovery, and support-driven resets are frequently weaker than normal login, which means an attacker does not need to defeat the strongest control if a softer path exists. Current guidance in the NIST Cybersecurity Framework 2.0 points teams toward risk-based, layered protection, and NHIMG research on the Top 10 NHI Issues shows how quickly weak identity controls become operational risk when they are shared, copied, or reused across systems.

In practice, many security teams encounter account takeover only after recovery abuse or approval fraud has already occurred, rather than through intentional testing of those flows.

How It Works in Practice

Reducing takeover risk without passwords usually means binding the user or workload to something harder to steal: a secure device, a cryptographic key, or a physical approval action. The best-known examples are phishing-resistant methods such as passkeys, hardware-backed authenticators, and device-based approvals. These controls shift trust from knowledge factors to possession and cryptographic proof, which makes credential replay far less useful.

For IAM teams, the practical design work is in the surrounding lifecycle. Passwordless sign-in is only one control point. Enrollment has to verify the right person or device. Recovery has to be at least as strong as sign-in. Transaction approval for high-risk actions should require an additional step, ideally tied to context such as device health, location anomaly, or unusual privilege elevation. The Ultimate Guide to NHIs — Why NHI Security Matters Now captures the broader identity lesson: controls fail when teams secure access events but ignore the identity lifecycle that surrounds them.

• Use phishing-resistant methods for privileged users first, then expand to high-volume users and contractors.
• Remove SMS and email fallback paths for recovery where possible, since those channels are easy to intercept.
• Require step-up verification for recovery, password reset, MFA reset, and payment or privilege changes.
• Log enrollment, device binding, and recovery actions as security events, not just help desk tasks.
• Test every path with red-team or abuse-case scenarios before declaring the rollout complete.

That approach aligns with the identity assurance principles in NIST Cybersecurity Framework 2.0 and the practical warnings in NHIMG’s OWASP NHI Top 10, where identity misuse often starts with weak trust in the setup or recovery path. These controls tend to break down in high-turnover environments with outsourced support because recovery exceptions become the easiest place for attackers to blend in.

Common Variations and Edge Cases

Tighter passwordless controls often increase enrollment friction and help desk load, so organisations have to balance stronger assurance against user recovery speed and device coverage. Best practice is evolving here, and there is no universal standard for every workforce or customer population.

Some environments can move almost entirely to passkeys or hardware-backed authenticators. Others need a phased model because legacy apps, shared endpoints, or regulatory requirements still force fallback methods. The key risk is treating passwordless as a front-end convenience project while leaving recovery channels, service desk workflows, and transaction approvals untouched. NHIMG’s Ultimate Guide to NHIs and the 2024 Non-Human Identity Security Report both reflect the same operational pattern: identity control gaps are usually found in the exception path, not the primary login flow.

For higher-risk transactions, organisations should consider combining passwordless authentication with device binding, conditional access, and approval workflows that are separate from the user’s primary session. That is especially important when support staff can override controls, because human intervention often becomes the weakest link unless it is instrumented and reviewed like any other privileged action.

Related resources from NHI Mgmt Group

• How should government teams reduce resident account takeover without adding too much login friction?
• How can organisations reduce account takeover risk without hurting user experience?
• How should retailers reduce login friction without increasing account takeover risk?
• How should security teams reduce account recovery risk without making sign-in harder?