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Case study Healthcare

Ransomware access surfaced before patient data was touched

A healthcare provider disabled a compromised access path before ransomware deployment or patient data exposure occurred.

ThreatRansomware-linked access to a claims processing portal
What Unit6 sawExposed identity access
OutcomeStopped before impact

Impact summary

A healthcare provider disabled a compromised access path before ransomware deployment or patient data exposure occurred.

Illustrative close-up of an unmarked access badge and hardware security key on a clinical office desk

01 / Observation

What Unit6 saw

  1. 01

    Valid credentials for an active portal user

  2. 02

    The corresponding MFA seed used to generate authentication codes

  3. 03

    Evidence that the credentials had already been successfully tested

  4. 04

    Indicators linking the access to ransomware-related activity

02 / Significance

Why it mattered

A healthcare organization relied on a claims processing portal protected by traditional multi-factor authentication (MFA).

Unit6 discovered that a ransomware-linked threat actor had obtained not only valid credentials for the portal, but also the MFA secret required to bypass authentication entirely.

The actor had already verified access and was preparing to move deeper into the environment.

Without intervention, the compromised account could have provided access to patient-linked financial records, claims data, and systems commonly targeted during ransomware operations.

03 / Confidence

How Unit6 established confidence

Valid credentials, an MFA seed, tested access, and ransomware-related indicators

This discovery originated from Unit6’s external intelligence collection and actor monitoring capabilities rather than internal security alerts.

04 / Response

What the customer could do

Working alongside the security team, Unit6 helped:

  • Disable the compromised account
  • Invalidate exposed MFA secrets
  • Force secure re-enrollment of affected users
  • Deploy phishing-resistant authentication for high-risk accounts
  • Strengthen monitoring and access controls around the portal

The organization also reviewed historical activity to ensure no data had been accessed and no persistence mechanisms had been established.

05 / Documented outcome

Outcome

The attack path was eliminated before ransomware deployment or patient data exposure occurred.

The healthcare provider strengthened its identity security program, replaced vulnerable authentication methods, and gained confidence that a high-risk compromise had been neutralized before it became a reportable incident.

“We shut down the attack before patient data was touched.”

— CISO, Healthcare

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