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Zero trust and segmentation at HIMSS 2026: what changed for healthcare teams?

 

(@nhi-mgmt-group)
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TL;DR: At HIMSS 2026, healthcare security leaders repeatedly converged on zero trust, segmentation, and privilege control as the practical response to vendor access, device sprawl, and misplaced trust, according to Elisity, with Cooper University Health Care citing a 75% reduction in unknown edge devices and a 45% increase in segmentation coverage. The lesson is that healthcare risk is governed at the trust boundary, not in the dashboard layer.

Editorial analysis by NHI Mgmt Group, based on content published by Elisity: “HIMSS 2026: What We Learned About Zero Trust, Segmentation, and Privilege at the Cybersecurity Command Center”.

By the numbers:

  • Cooper University Health Care reported a 75% reduction in unknown edge devices.
  • Cooper University Health Care reported a 45% increase in segmentation coverage.

Key questions

Q: What breaks in healthcare when trust is granted before identity and access are verified?

A: Implicit trust turns valid credentials, vendor logins, and device access into lateral movement paths.

Q: Why do edge devices and vendor accounts increase breach risk in hospital networks?

A: They often combine long-lived access, uneven patching, and unclear ownership.

Q: What signs show that segmentation is failing to contain healthcare risk?

A: Look for flat communication paths between device classes, unknown edge devices, vendor accounts that can reach multiple clinical zones, and security teams that cannot explain why a system has its current access scope.

Practitioner guidance

  • Map non-human access paths Inventory vendor logins, device credentials, service accounts, and integration accounts that can reach clinical systems or shared infrastructure.
  • Segment by clinical trust zone Separate medical devices, administrative systems, and clinical applications so a compromise in one zone cannot freely traverse the rest of the environment.
  • Harden edge devices before expansion Apply baselines, remove unnecessary services, and eliminate hardcoded credentials on endpoints that cannot be patched quickly.

Bottom line: Healthcare breaches in this article are framed as trust failures, not failures of perimeter strength or tool volume.

Explore further

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



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

Zero trust in healthcare fails when identity is treated as an implementation detail. The article shows that the real control problem is not perimeter strength but whether access is continuously evaluated across users, vendors, and devices. When identity governance is weak, network controls end up compensating for decisions they were never meant to make. The practitioner conclusion is to treat identity as the primary trust boundary.

A few things that frame the scale:

  • 90% of IT leaders say properly managing NHIs is essential for a successful zero-trust implementation, according to the Ultimate Guide to NHIs.
  • By 2029, 40% of enterprises that successfully implement zero trust within cloud service provider environments will rely on the advanced visibility and control capabilities offered by CNAPP solutions.

A question worth separating out:

Q: How should healthcare teams balance privilege governance and segmentation?

A: They should treat them as complementary controls. Privilege limits what an identity can do, while segmentation limits where that identity can go if it is abused. Used together, they reduce both the likelihood and the blast radius of compromise in environments with medical devices and third-party access.

👉 Read our full editorial: HIMSS 2026 showed zero trust and segmentation as healthcare’s real controls



   
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