The Oncology Institute

DISCLOSED 2026-05-26 · SUPPLY CHAIN

The Oncology Institute reported a data breach resulting from a cyberattack on a third-party vendor. Patient information was potentially exposed. No details on the number of affected individuals or the specific data types were provided.

The record

What we know

Disclosed

2026-05-26

Attack vector

Supply Chain

Sector

healthcare

Data classes exposed

patient information

ColdRecon assessment

Could a positive-security control have prevented this?

Verdict · unclear · opinion

Insufficient details about the vendor's environment or attack method to assess whether a positive-security model would have prevented the breach.

Our assessments are opinion, grounded in the cited public facts. Read them critically.

Sources

Cited reporting

↗ securityaffairs.com (2026-05-26)

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Other supply chain breaches on file

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