Non-human identity (NHI) security is the discipline of discovering, cataloging, governing, and protecting machine-based credentials and software actors—including API keys, service accounts, OAuth tokens, secrets, webhooks, and autonomous AI agents—that operate across cloud and SaaS environments.
Historically, Identity and Access Management (IAM) focused almost exclusively on human users through Single Sign-On (SSO) and Multi-Factor Authentication (MFA). However, the explosion of cloud automation, third-party integrations, and AI adoption has caused non-human identities to outnumber human workers by as much as 10 to 1.
Unlike human employees who log off at the end of the day, non-human identities operate continuously, possess broad administrative privileges, and often lack designated owners. When left unmanaged, orphaned service accounts and long-lived OAuth tokens create pervasive security blind spots.
Security teams face several critical operational and architectural hurdles when governing non-human identities across SaaS and cloud architectures:
NHIs are frequently created on demand by developers, DevOps pipelines, and business units without central IT review, generating widespread SaaS identity sprawl and untracked access pathways.
Service accounts and integration tokens often receive full administrative read/write scopes during setup and are rarely audited or downscoped, violating the principle of least privilege.
When software projects end or employees depart, their associated API tokens and OAuth grants frequently remain active indefinitely, becoming high-risk zombie accounts vulnerable to credential stuffing and takeover.
Modern autonomous AI agents act as persistent NHIs, dynamically executing tools and interacting with enterprise APIs without human oversight.
At Grip Security, we believe identity is the control plane for SaaS and AI risk. Securing non-human identities requires automated, agentless discovery that maps every human and machine identity back to business owners, tracks token activity, and enforces automated revocation. Learn how to secure machine identities with Grip’s SaaS Identity Risk Management Platform.
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