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Instituto Ferrero de Neurología y Sueño

Claimed by Kazu · listed 16 hours ago

Today
Age
since listed · data leaked

Status timeline

  1. ListedAug 23, 2026
  2. Data leakeddate unknown

At a glance

Group
Kazu
Status
Data leaked
Country
Argentina
Sector
Healthcare
Listed on leak site
Aug 23, 2026

About the victim

AI dossier — public-source company profile

Instituto Ferrero de Neurología y Sueño (IFN) is a specialized medical center in Buenos Aires, Argentina, focusing on the diagnosis and treatment of neurological and sleep disorders. It offers neurology consultations, sleep studies, diagnostic testing, and personalized treatment plans, staffed by board-certified specialists using advanced medical technology.

Industry
Healthcare - Neurology & Sleep Medicine
Address
Junín 1120, Buenos Aires, Argentina

Attack summary

Severity: low — No proof files, screenshots, or specific data exfiltration confirmed in the post. The leak post is a generic announcement with no operational impact or evidence of data compromise described.

The kazu group claims to have attacked IFN but the leak post contains no specific details of what data was exfiltrated, encrypted, or compromised. No data inventory or proof files are described in the available post excerpt.

low

Data the group says was taken

AI dossier — extracted from the leak post
  • Patient medical records
  • Personal identifiable information

What the group claims

Instituto Ferrero de Neurología y Sueño (IFN) is a specialized medical center in Argentina that focuses on the diagnosis and treatment of neurological and sleep disorders. It provides services such as neurology consultations, sleep studies, diagnostic testing, and personalized treatment plans. Using advanced medical technology and a team of specialists, IFN helps patients receive comprehensive care for conditions affecting the brain, nervous system, and sleep health.

Sources

Source

Indexed 16 hours 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 kazu

The Kazu ransomware group is a relatively new threat actor that emerged in November 2025, operating with apparent financial motivations based on their targeting patterns across multiple sectors and geographic regions. Given their recent emergence and limited public documentation, details about their country of origin and potential affiliations remain unclear, though their targeting of diverse international victims suggests either a ransomware-as-a-service model or an independent operation with broad reach capabilities. With only nine documented victims to date, specific details about Kazu's attack methodology, initial access vectors, and encryption techniques have not been extensively documented by major threat intelligence organizations, though their targeting spans healthcare, public sector, financial services, and technology organizations across the United States, Colombia, South Africa, Nigeria, and Great Britain. The group's recent emergence means there are no widely reported major campaigns or high-profile incidents documented by established security research organizations like Mandiant, CISA, or the FBI. As of the latest available intelligence, Kazu appears to remain active given their very recent first observation date, though their limited victim count and recent emergence make definitive assessments of their operational status preliminary. The group has been linked to 23 public disclosures across our corpus. First observed on a leak site on November 11, 2025; most recent post August 23, 2026. The operation is currently active.

Timeline of this disclosure

  • August 23, 2026Instituto Ferrero de Neurología y Sueño listed by kazuon the group's public leak site

Other recent disclosures by kazu

kazu has been linked to 23 public victims on Darkfield. A sample of the most recent:

See the full kazu dossier →

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 2,608 disclosures indexed across all operators we track. Geographically, Instituto Ferrero de Neurología y Sueño is reported in Argentina, a country with 32 ransomware disclosures in our corpus.

If your organisation is affected

A listing by kazu means Instituto Ferrero de Neurología y Sueño 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.
  • Monitor for the data appearing on kazu'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.