Zero trust vs least privilege: are your access controls keeping up?

TL;DR: Zero trust and least privilege are often discussed together, but they solve different identity problems: one continuously verifies access, while the other constrains standing permission, according to Zluri. The distinction matters because teams that blur verification with authorization tend to overestimate how much risk their IAM controls actually remove.

NHIMG editorial — based on content published by Zluri: IT Teams Zero Trust vs Least Privilege: 5 Key Differences

By the numbers:

• Only 20% have formal processes for offboarding and revoking API keys, and even fewer have procedures for rotating them.
• 90% of IT leaders say properly managing NHIs is essential for a successful zero-trust implementation.
• Only 13% of organisations feel extremely prepared for the reality of agentic AI despite the majority racing toward autonomous adoption.

Questions worth separating out

Q: How should security teams implement zero trust and least privilege together?

A: Treat zero trust as the access decision layer and least privilege as the entitlement design layer.

Q: Why do NHIs complicate zero trust programmes?

A: NHIs complicate zero trust because many of them rely on long-lived credentials, shared tokens, or broad service permissions.

Q: What breaks when least privilege is missing?

A: When least privilege is missing, a single compromised identity can reach far more systems and data than the task requires.

Practitioner guidance

• Separate verification from entitlement design Map zero trust controls to access decision points and least privilege controls to permission scope.
• Audit standing access across humans and NHIs Look for roles, tokens, and service accounts that retain more access than the task requires.
• Use lifecycle events to reduce privilege drift Tie joiner, mover, leaver, rotation, and offboarding events to entitlement reassessment.

What's in the full article

Zluri's full article covers the explanatory detail this post intentionally leaves at the governance level:

• A side-by-side comparison table of zero trust and least privilege across scope, granularity, and implementation
• Examples showing how each model changes access decisions for users, devices, and applications
• A walkthrough of how Zluri positions temporary access and audit reporting within the broader access-control discussion
• The article's own framing of how these controls affect usability and rollout effort

👉 Read Zluri's analysis of zero trust vs least privilege for IT teams →

Zero trust vs least privilege: are your access controls keeping up?

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