Identity-based access controls and Zero Trust: what teams miss

TL;DR: Identity remains the most common attack surface in incident response, and the article argues that granular, identity-based access controls depend on visibility, context, and enforcement across users, machines, applications, and AI agents, according to Zero Networks. The practical lesson is that least privilege is not a policy statement; it fails when organisations cannot see, scope, and continuously verify reachability.

NHIMG editorial — based on content published by Zero Networks: Ask the Expert on identity security, access controls, and Zero Trust

By the numbers:

• 99% of cloud users, roles and services hold excessive permissions, with some unused for 60 days or more.
• 90% of incidents start on the identity level.

Questions worth separating out

Q: How should security teams implement identity-based access control in mixed environments?

A: Start with identity and communication visibility, then define policy around actual data flows rather than assumed business roles.

Q: Why do excessive permissions create so much risk in Zero Trust programmes?

A: Excessive permissions expand the number of paths an attacker can use after the first compromise.

Q: What breaks when organisations try to do least privilege without visibility?

A: Least privilege becomes guesswork when teams cannot see what identities actually access or how they communicate.

Practitioner guidance

• Map communication paths before writing enforcement rules Inventory which identities talk to which applications, network assets, and cloud services, then use that map to define policy boundaries instead of guessing at role intent.
• Reduce standing privilege before expanding Zero Trust scope Remove unused permissions, narrow default reach, and prioritise identities with broad or old access first.
• Use just-in-time access for elevated server operations Reserve elevated access for short, task-scoped sessions and keep the authoritative identity source in the loop so approval and revocation are tied to the same trust record.

What's in the full article

Zero Networks' full article covers the operational detail this post intentionally leaves for the source:

• The article’s practical Q&A examples on network-level RBAC and identity-based enforcement in mixed environments.
• The discussion of how teams can combine identity providers, JIT access, and privilege controls across on-prem and cloud estates.
• The specific ways Zero Trust can support audit evidence, cyber insurance, and compliance reporting through communication breadcrumbs.
• The vendor’s own explanation of adaptive microsegmentation and how it fits into breach containment.

👉 Read Zero Networks' Q&A on identity-based access controls and Zero Trust →

Identity-based access controls and Zero Trust: what teams miss?

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