Financial services NHI risk: where IAM and PAM controls slip

TL;DR: Financial services face a $4.5 million average breach cost, and the article argues that unmanaged NHIs, over-permissive service accounts, automated pipelines, and third-party access expand both attack surface and compliance risk, according to Entro Security. The core issue is not visibility alone, but whether IAM, PAM, rotation, and lifecycle controls can actually govern machine access at scale.

NHIMG editorial — based on content published by Entro Security: NHI Security Challenges in Financial Services

Questions worth separating out

Q: How should security teams inventory and govern non-human identities in financial services?

A: They should maintain a live inventory that includes every API key, token, service account, certificate, and system account, plus ownership, purpose, scope, and rotation state.

Q: Why do service accounts create so much risk in regulated environments?

A: Service accounts often carry broader privileges than users because they must run unattended across systems, but that broad access becomes dangerous when credentials are stale, unowned, or rarely reviewed.

Q: What do organisations get wrong about third-party machine access?

A: They often treat third-party connectivity as a setup task instead of a governed lifecycle.

Practitioner guidance

• Inventory all NHIs as governed assets Create a single inventory for API keys, OAuth tokens, service accounts, certificates, and system accounts.
• Reduce standing privilege in service accounts and pipelines Replace broad machine permissions with task-scoped entitlements, especially for CI/CD, GitOps, and production integration identities.
• Tie third-party access to offboarding and rotation rules Require explicit revocation steps when a vendor relationship changes, and ensure shared integrations have documented rotation and evidence capture.

What's in the full article

Entro Security's full blog covers the operational detail this post intentionally leaves for the source:

• Examples of adaptive authentication criteria for non-human identities in financial services
• Step-by-step guidance on federated identity management for machine-to-machine integrations
• SOAR-oriented incident response and forensics workflows for exposed NHIs and secrets
• Rotation, vaulting, and lifecycle management detail for API keys and OAuth tokens

👉 Read Entro Security's analysis of NHI security challenges in financial services →

Financial services NHI risk: where IAM and PAM controls slip?

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