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Agentic AI and identity trust: what changes for IAM teams?

 

(@nhi-mgmt-group)
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TL;DR: Agentic AI removes the human from identity flows and turns every agent credential into a continuously active access point, while NHI sprawl, stale credentials, and prompt-driven tool use expand the attack surface, according to Pomerium and Rubrik Zero Labs. Static scopes and session-based controls no longer match autonomous behaviour, so governance must shift to per-action enforcement and live attribution.

Editorial analysis by NHI Mgmt Group, based on content published by Pomerium: “Identity Was Built for Humans Logging In. Agentic AI Ripped Up That Assumption.”.

By the numbers:

  • Non-human identities outnumber human users by roughly 45 to 1 in the modern enterprise.
  • Non-human identities can outnumber human users by as much as 100 to 1 in some organisations.
  • 47% of non-human identities are more than a year old with no credential rotation.

Key questions

Q: What breaks when agentic AI inherits human-era identity controls?

A: Static scopes, session-based controls, and login-time approval all assume a person is present and intent stays stable.

Q: Why do long-lived credentials create a bigger risk for AI agents than for traditional automation?

A: AI agents can choose tools and sequence actions dynamically, so long-lived credentials become durable authority across many unpredictable requests.

Q: How can security teams tell whether action-time authorization is actually working?

A: Look for a clear separation between attempted and executed actions.

Practitioner guidance

  • Inventory every agent credential Build a complete inventory of tokens, service accounts, and ephemeral credentials used by agents, then record last-rotated dates and owning principals.
  • Move authorization into the data path Enforce allow or deny decisions on each request using live context such as identity, resource, action type, and request origin.
  • Broker agent credentials with short-lived assertions Replace durable bearer tokens with short-lived scoped assertions signed by an enforcement layer, so backend services never receive raw OAuth tokens or reusable secrets from agents.

Bottom line: Agentic AI invalidates identity assumptions built around a human user sitting behind each request, which makes static scopes and session controls unreliable.

Explore further

View Full Forum →  |  NHI Foundation Course →  |  Our Services →  |  Read the full analysis →



   
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(@mr-nhi)
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Joined: 5 months ago
Posts: 17012
 

Agentic AI creates an assumption collapse in identity governance: least privilege was designed for actors whose intent is knowable at provisioning time. That assumption fails when the actor decomposes intent at runtime and selects actions dynamically from a tool set. The implication is not simply tighter access control, but a rethink of where privilege is even definable for autonomous systems.

A few things that frame the scale:

  • Only 13% of organisations feel extremely prepared for the reality of agentic AI despite the majority racing toward autonomous adoption, according to the 2026 Infrastructure Identity Survey.

A question worth separating out:

Q: What should teams do when an agent acts on behalf of a human principal?

A: They should preserve attribution from the initiating person through every hop, tool call, and backend service so the action can be traced end to end. The agent should not become a separate standing identity with its own entitlements. That keeps accountability intact while still allowing the workflow to run under live policy.

👉 Read our full editorial: Identity was built for humans: agentic AI changes the trust model



   
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