Cyber Threat Intelligence
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Ransomware Victim Healthcare

Meducar: Telemedicine and Patient Management System

Ransomware attack by Kazu · Disclosed August 23, 2026 · 🇧🇷 Brazil

meducar.com

Date Disclosed
Aug 23, 2026
2026
Threat Group
Kazu
20 total victims
Country
🇧🇷 Brazil
Industry
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 Meducar: Telemedicine and Patient Management System

Meducar is a Latin American healthtech platform that provides software for doctors and clinics to manage medical appointments, electronic health records, and patient communication in one system. It helps healthcare professionals organize their daily practice by offering tools such as online scheduling, clinical history management, electronic prescriptions, and telemedicine services.

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

Meducar: Telemedicine and Patient Management System was targeted by Kazu ransomware, one of the most active ransomware groups in our database with 20 confirmed victims globally. The attack was disclosed on August 23, 2026, when Meducar: Telemedicine and Patient Management System appeared on the group's dark web leak site.

Meducar: Telemedicine and Patient Management System is based in Brazil , operating in the Healthcare sector. Brazil ranks #8 globally for ransomware attacks, with 454 victims in our 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 employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 14, 2026 08:00 UTC.

Frequently Asked Questions

Was Meducar: Telemedicine and Patient Management System attacked by ransomware?

Yes. Meducar: Telemedicine and Patient Management System was listed as a victim of the Kazu ransomware group on August 23, 2026. The organisation is based in Brazil and operates in the Healthcare sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Meducar: Telemedicine and Patient Management System?

Meducar: Telemedicine and Patient Management System was attacked by Kazu ransomware. Kazu is one of the most active ransomware groups, having claimed 20 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Meducar: Telemedicine and Patient Management System ransomware attack occur?

The ransomware attack on Meducar: Telemedicine and Patient Management System 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 Meducar: Telemedicine and Patient Management System ransomware attack?

The specific data stolen from Meducar: Telemedicine and Patient Management System 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, Meducar: Telemedicine and Patient Management System 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.