Non-human identity: The missing puzzle in zero trust?

Non-human identities are ubiquitous in modern infrastructure, yet often unmanaged, creating blind spots in zero-trust environments. This creates a security risk as these digital identities authenticate, connect, and automate behind the scenes, outnumbering human users by a wide margin. Zero-trust architecture assumes no one should be trusted by default, requiring every user, device, or system to prove who they are and access requested resources. However, it usually doesn't account for non-human identities, which handle majority of system-to-system communication in cloud-native infrastructures. Ignoring them breaks zero-trust at its foundation, implicitly trusting machines to operate without verification. Managing non-human identities requires strict access controls, automation, and short-lived access to maintain a true zero-trust posture. Solutions include continuously monitoring their behavior, building baselines for normal behavior, eliminating long-lived secrets, enforcing least privilege access, and leveraging automation tools like dedicated secrets management to handle credential issuance and rotation.

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