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Cyber Threat
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Ransomware victim Healthcare

Centro Médico Especializado OSI: Healthcare Solutions

Listed by Kazu on · organisation based in Mexico

centromedicoosi.com

Disclosed
Aug 23, 2026
Leak-site listing date
Threat group
Kazu
22 victims listed
Country
Mexico
#12 most targeted
Sector
Healthcare

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Kazu. Figures and technique mappings are quoted from the source data, not inferred.

About Centro Médico Especializado OSI: Healthcare Solutions

Centro Médico Especializado OSI is a healthcare provider based in Peru that specializes in physical medicine, rehabilitation, physiotherapy, chiropractic care, and alternative medicine treatments. Founded in 1999 and headquartered in Lima, OSI has grown into one of the country's largest rehabilitation and physiotherapy networks, operating multiple clinics across the Lima metropolitan area. wellness network in Peru, focused on helping patients recover mobility, reduce pain, and improve their quality of life through specialized medical and therapeutic care.

Source record: ransomware.live

About the Kazu group

Kazu is an emerging ransomware group active since September 2025 that employs double-extortion tactics, targeting government, healthcare, and financial organizations primarily in Southeast Asia, the Middle East, and Latin America, with notable claimed breaches including Dubai's Ports, Customs and Free Zone Corporation with 1.94 TB exfiltrated. Kazu has listed 20 victims since November 2025.

Incident analysis

Centro Médico Especializado OSI: Healthcare Solutions was listed by Kazu ransomware, a group with 22 victims recorded in this database. The listing appeared on the group's leak site on August 23, 2026.

Centro Médico Especializado OSI: Healthcare Solutions is based in Mexico and operates in the Healthcare sector. Mexico ranks #12 worldwide for ransomware disclosures, with 290 victims in this database.

Sector context. Healthcare organisations are high-value ransomware targets because patient data is extremely sensitive, regulatory penalties for breaches are severe, and operational downtime can threaten patient safety — all factors that increase ransom payment pressure.

Kazu typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was Centro Médico Especializado OSI: Healthcare Solutions attacked by ransomware?

Yes. Centro Médico Especializado OSI: Healthcare Solutions was listed as a victim of the Kazu ransomware group on August 23, 2026. The organisation is based in Mexico and operates in the Healthcare sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Centro Médico Especializado OSI: Healthcare Solutions?

Centro Médico Especializado OSI: Healthcare Solutions was attacked by Kazu ransomware. Kazu is one of the most active ransomware groups, having claimed 22 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Centro Médico Especializado OSI: Healthcare Solutions ransomware attack occur?

The ransomware attack on Centro Médico Especializado OSI: Healthcare Solutions was disclosed on August 23, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the Centro Médico Especializado OSI: Healthcare Solutions ransomware attack?

The specific data stolen from Centro Médico Especializado OSI: Healthcare Solutions has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Healthcare organisation, Centro Médico Especializado OSI: Healthcare Solutions likely held patient records, medical data, and personally identifiable information (PII).

How can organisations protect against Kazu attacks?

To defend against Kazu and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.