Was Expert MRI hit by ransomware?

Expert MRI was listed by the pear ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the pear ransomware group?

pear is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Expert MRI breach?

pear published data attributed to Expert MRI. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Expert MRI

Claimed by Pear · listed 10 months ago

10m

Age

since listed · data leaked

Status timeline

ListedSep 14, 2025
Data leakeddate unknown

At a glance

Group: Pear
Status: Data leaked
Country: United States
Sector: Healthcare
Listed on leak site: Sep 14, 2025

About the victim

AI dossier — public-source company profile

Expert MRI is a leading diagnostic radiology center network based in Southern California, operating multiple locations across the United States. The company specializes in high-field strength MRI, CT, X-ray, ultrasound, interventional radiology, and advanced imaging technologies such as Diffusion Tensor Imaging and NeuroQuant, serving over 85,000 patients and completing 173,000+ scans. It serves patients, referring physicians, and attorneys, with a focus on brain, spine, neck, and orthopedic injury imaging.

Industry: Diagnostic Radiology & Medical Imaging
Address: Southern California, United States (multiple locations; no single street address confirmed)

Attack summary

Severity: critical — Expert MRI is a healthcare provider handling sensitive medical imaging and patient records at scale (85,000+ patients). Data published status indicates confirmed exfiltration of what is almost certainly HIPAA-regulated medical and PII data at significant scale, meeting the threshold for critical severity.

The ransomware group 'pear' claims to have attacked Expert MRI and has published data (disclosed status: data_published), suggesting exfiltration of company and/or patient data. The leak post references the company's imaging specialties, but no specific ransom amount or explicit data volume was stated.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Patient medical records
Diagnostic imaging data
Patient personally identifiable information (PII)
Physician and referral partner information
Insurance and billing records
Patient portal credentials/access data

What the group claims

Pioneers in Cutting-Edge Imaging for Brain, Neck, Spine Injuries, and Orthopedic Excellence

Sources

Victim siteexpertmri.com
Leak posthttp://pearsmob5sn44ismokiusuld34pnfwi6ctgin3qbvonpoob4lh3rmtqd.onion/Companies/expertmri

Source

Indexed 10 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About pear

The Pear ransomware group is a relatively new threat actor that emerged in August 2025, operating with primarily financial motivations and targeting victims across multiple countries and sectors. Based on their recent emergence and limited public documentation, specific details about their country of origin and organizational structure remain unclear, though their targeting patterns suggest a financially-driven operation that may operate independently or as part of a smaller ransomware-as-a-service model. With 65 documented victims since their August 2025 debut, the group has demonstrated a preference for targeting organizations in the United States, New Zealand, Australia, Egypt, and Switzerland, with particular focus on healthcare, business services, manufacturing, and technology sectors. Their attack methodology and specific technical details have not been extensively documented by major threat intelligence firms or law enforcement agencies, though their rapid victim acquisition suggests they have established effective initial access and encryption capabilities. Notable campaigns and high-profile attacks have not been publicly detailed by CISA, FBI, or major security research organizations, likely due to the group's recent emergence and relatively small scale compared to established ransomware operations. As of late 2025, Pear appears to remain active given their recent emergence and ongoing victim targeting across multiple geographic regions and industry verticals. The group has been linked to 103 public disclosures across our corpus. First observed on a leak site on August 5, 2025; most recent post July 13, 2026. The operation is currently active.

Timeline of this disclosure

September 14, 2025Expert MRI listed by pearon the group's public leak site

Other recent disclosures by pear

pear has been linked to 103 public victims on Darkfield. A sample of the most recent:

See the full pear dossier →

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 2,600 disclosures indexed across all operators we track. Geographically, Expert MRI is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by pear means Expert MRI appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on pear's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.