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 87 public disclosures across our corpus. First observed on a leak site on August 5, 2025; most recent post May 20, 2026. The operation is currently active.

Timeline of this disclosure

April 13, 2026Colorado Pulmonary Intensivists listed by pearon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 1,779 disclosures indexed across all operators we track. Geographically, Colorado Pulmonary Intensivists is reported in US, a country with 2,713 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

← All victims

Colorado Pulmonary Intensivists

Claimed by pear · listed 1 month ago

37d

Age

since listed · data leaked

Status timeline

Listed
Apr 13, 2026
Data leaked

At a glance

Group: pear
Status: Data leaked
Country: US
Sector: Healthcare
Listed on leak site: Apr 13, 2026

About the victim

AI dossier — public-source company profile

Colorado Pulmonary Intensivists (CPI) is a medical practice specializing in pulmonology, critical care, outpatient pulmonary care, and sleep medicine located in Littleton, Colorado. CPI has since been integrated into UCHealth's network of hospitals and clinics, operating under UCHealth Littleton Medical Center. The practice serves patients requiring pulmonary and intensive care services in the greater Denver area.

Industry: Pulmonology & Critical Care Medicine
Address: 15 W. Dry Creek Circle, Littleton, CO 80120

Attack summary

Severity: critical — The victim is a healthcare provider specializing in pulmonology and critical care; data_published status indicates regulated medical/patient PII (PHI) has been exfiltrated and released, which constitutes a critical severity breach under HIPAA and general data sensitivity standards.

The ransomware group 'pear' claims an attack on Colorado Pulmonary Intensivists with a disclosed status of data_published, indicating data exfiltration and publication. The leak post references the practice's specialty areas but does not specify the volume or precise categories of data released.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Patient medical records
Pulmonology and critical care clinical data
Sleep medicine records
Outpatient care records

What the group claims

Specializes in services related to pulmonology and critical care, including outpatient pulmonary care and sleep medicine

Sources

Victim sitecpimedicine.com
Leak posthttp://pearsmob5sn44ismokiusuld34pnfwi6ctgin3qbvonpoob4lh3rmtqd.onion/Companies/cpimedicine

Source

Indexed 1 month 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.