What Is Zero Trust?
Zero Trust is a security model built on the principle that no user, device, or system should be trusted by default, regardless of whether it sits inside or outside a traditional network perimeter. Instead of granting broad access once a connection is established, Zero Trust requires continuous verification of identity, device posture, and context before granting access to any specific resource, and limits that access to only what is needed for the task. Popularized as a response to perimeter-based security failing in cloud and remote-work environments, Zero Trust is not a single product but an architectural approach, typically implemented through strong identity verification, micro-segmentation, least-privilege access policies, and continuous monitoring of both human and machine activity.
Why It Matters
Zero Trust is usually described in terms of human users and endpoints, but non-human identities are exactly the kind of 'trusted-by-default' entity the model was meant to eliminate—a service account or API key that authenticates once and is then implicitly trusted for every subsequent call, often indefinitely, with no re-verification of context or behavior. A 100-person company typically runs 2,000+ non-human identities, and most were never built with Zero Trust principles in mind: static long-lived credentials, broad standing permissions, and no session-level scrutiny. When one of these machine credentials is compromised, attackers inherit that same implicit trust and move through the environment largely unchecked. OWASP's finding that 80% of identity breaches involve a non-human identity reflects this gap directly: organizations that apply Zero Trust rigorously to employees but not to the service accounts, bots, and AI agents acting on their behalf leave their largest identity population outside the model entirely.
How Cydenti Helps
Cydenti applies Zero Trust thinking to the identity population most programs overlook: non-human identities. By continuously mapping what each service account, API key, and AI agent actually does—not just what it was provisioned to do—Cydenti replaces implicit, standing trust with ongoing verification based on real behavior and risk. This extends least-privilege and continuous-monitoring principles to machine credentials the same way they're already applied to human users, closing a structural gap in most Zero Trust rollouts.
Explore →Frequently Asked Questions
Does Zero Trust apply to machine identities, not just users?
Yes—Zero Trust principles apply to any entity requesting access, human or machine. In practice, most Zero Trust implementations focus heavily on user and device verification while giving service accounts, API keys, and bots long-lived, broadly scoped credentials that are never re-verified, leaving a significant gap in otherwise mature programs.
What's the difference between Zero Trust and least privilege?
Least privilege is a principle—grant only the access needed for a task. Zero Trust is a broader architecture that includes least privilege alongside continuous verification, micro-segmentation, and context-aware access decisions. Least privilege is one building block within a full Zero Trust approach.
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