# Cyberattack on Hospital Israelita Einstein

> Developing situation record from CLSTR: https://clstr.news/situations/cyberattack-on-hospital-israelita-einstein
> Updated: 2026-10-08T23:35:35.000Z. Sources: 25. Developments: 2.

Hospital Israelita Einstein in São Paulo, Brazil, confirmed a cyberattack involving unauthorized access to patient data. The compromised information includes names, CPF numbers, dates of birth, prescriptions, and exam results.

Following a two-month investigation, the Brazilian Federal Police launched ‘Operação Insidioso’ in Joinville, Santa Catarina. This operation includes search and seizure warrants and temporary arrest warrants for a suspect believed to have assisted a criminal group in extracting the data. Investigators identified the incident as a ransomware attack, noting that perpetrators attempted to extort the hospital by threatening to release the stolen material.

The hospital stated that electronic systems and patient care remain functional, and there is currently no evidence that the information has been misused. The National Data Protection Authority (ANPD) has been notified, and the hospital is contacting affected patients via email.

## Claims

- Hospital Israelita Albert Einstein confirmed unauthorized access to patient databases. (reported by 3 sources)
- Compromised data includes names, CPF numbers, dates of birth, medical prescriptions, and exam results. (reported by 3 sources)
- The hospital has not identified evidence of the stolen information being used or shared improperly. (reported by 3 sources)
- Affected patients are being notified individually via email. (reported by 2 sources)
- Hospital systems and electronic medical records remained operational during the incident. (reported by 2 sources)
- The Federal Police launched Operation Insidioso in Joinville, Santa Catarina. (reported by 1 source)
- The attack involved a ransomware attempt and an extortion demand against the hospital. (reported by 1 source)
- The National Data Protection Authority (ANPD) was notified of the incident. (reported by 1 source)

## Timeline

### 2026-10-08: Hospital Israelita Albert Einstein confirms patient data breach

Hospital Israelita Albert Einstein confirmed a cyberattack and ransomware attempt that exposed patient names, medical records, and CPF numbers. The Federal Police are investigating the breach.

23 sources. https://clstr.news/cluster/hospital-israelita-einstein-suffers-cyberattack-exposing-patient-data

### 2026-09-09: Klein Iterson medical center in Gouda suffers data breach

A digital hack at the Klein Iterson medical center in Gouda has resulted in the theft or unauthorized viewing of personal data and parts of medical records.

2 sources. https://clstr.news/cluster/klein-iterson-medical-center-in-gouda-suffers-data-breach

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Cite as: Cyberattack on Hospital Israelita Einstein. CLSTR, https://clstr.news/situations/cyberattack-on-hospital-israelita-einstein