Healthcare / Diagnostic Imaging / Consumer
California diagnostic imaging (MRI) provider.
The Breach Risk Index (BRI) is a proprietary 0–100 score rating how dangerous a breach is right now, based on how recently the data has been circulating on the dark web and how valuable it is to attackers.
Between June 2 and August 24, 2025 unauthorized actors accessed Expert MRI's network; the PEAR group deployed ransomware and stole about 617 GB, first posting September 6, 2025. Exposed data included patient PII/PHI, medical diagnoses, dates of birth, home addresses and Social Security numbers. Expert MRI reported at least 209,560 individuals affected.
Full threat analysis, exploitation vectors, and principal guidance below.
10 additional sections · verified field analysis · defensive doctrine
443k rows records analyzed
Expert MRI is a California-based diagnostic imaging provider operating outpatient MRI and radiology centers.
A diagnostic imaging provider holds patient identity and contact data, dates of birth, Social Security numbers, health insurance and, in clinical records, diagnoses, test results and treatment history (PHI).
The practice disclosed the breach to HHS OCR after PEAR posted the data in September 2025.
As a HIPAA-covered imaging provider, the breach carries OCR notification, class litigation and patient-trust damage; the PEAR extortion added public-leak pressure.
A healthcare-linked breach: exposure ties a named individual to a provider relationship and, where clinical or insurance data is present, to conditions and treatment. For a high-profile principal this is targeting-grade, not merely identity-theft-grade: the combination lets an adversary locate, impersonate, or pressure the principal with little additional work.
Motivation: Unknown
An ambiguous label without enough reliable public sourcing for a stable threat actor profile. It may refer to a short-lived group, handle, acronym, or non-actor entity.
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