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www.neooftalmo.com.br

Claimed by Krybit · listed 3 hours ago

Today
Age
since listed · data leaked

Status timeline

  1. ListedAug 26, 2026
  2. Data leakeddate unknown

At a glance

Group
Krybit
Status
Data leaked
Country
Brazil
Sector
Healthcare
Listed on leak site
Aug 26, 2026

About the victim

AI dossier — public-source company profile

NEO (Núcleo de Excelência em Oftalmologia) is a specialized ophthalmology hospital network headquartered in Belo Horizonte, Minas Gerais, Brazil. The organization operates multiple surgical and diagnostic units across the metropolitan area, offering cataract surgery, glaucoma treatment, refractive procedures, and related eye care, and has served over 700,000 patients with 150,000+ surgeries performed. It holds ONA Level 2 accreditation and uses advanced Zeiss surgical technology.

Industry
Healthcare — Specialized Ophthalmology Hospital
Address
Av. Bernardo Monteiro 1299, Funcionários, Belo Horizonte, MG 30150-285, Brazil (Unit 1); additional units in Belo Horizonte metro area
Founded
2008

Attack summary

Severity: high — Healthcare provider with 700,000+ patient records at risk; confirmed attack by ransomware group with data-published status suggests exfiltration of regulated medical/PII data at scale. No explicit proof files or ransom demand stated in the truncated post, but the sector (healthcare) and patient population size elevate severity.

The leak post announces a ransomware attack on NEO but does not explicitly state what data was exfiltrated, the scope of encryption, or what operational systems were affected. The post appears to be a preliminary listing or extortion notice rather than a detailed breach disclosure.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Patient medical records
  • Surgical and diagnostic imaging files
  • Insurance claim data
  • Administrative/operational systems

What the group claims

NEO — Núcleo de Excelência em Oftalmologia Ltda is a leading Brazilian ophthalmology hospital founded on May 13, 200...

The leak post

captured from the group's site
NEO — Núcleo de Excelência em Oftalmologia Ltda is a leading Brazilian ophthalmology hospital founded on May 13, 2008, headquartered in Belo Horizonte, Minas Gerais, Brazil. The hospital is 100% dedicated to eye care, offering specialized ophthalmological consultations, exams, and surgical procedures including cataract surgery, glaucoma treatment, retinal procedures, refractive surgery, and personalized intraocular lenses. With over 150,000 surgeries performed and more than 700,000 patients attended, NEO is accredited by ONA Level 2 (Organização Nacional de Acreditação), ensuring high standards of medical care and patient safety. The hospital operates with advanced Zeiss technology, 7 fully equipped consultation rooms, 4 modern surgical suites, and dedicated diagnostic imaging rooms (ultrasound, angiography, laser photocoagulation) across more than 1,500 m² of modern facilities. Services are covered by multiple health insurance plans.
Unit 1 (Funcionários — Main Hospital): Av. Bernardo Monteiro 1299, Funcionários, Belo Horizonte, MG, CEP 30150-285
TEL: (31) 3235-0002 / (31) 3235-0000
Unit 2 (Venda Nova): Av. Padre Pedro Pinto 506, São Tomaz, Venda Nova, Belo Horizonte, MG
Unit 3: A…

Sources

Source

Indexed 3 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 krybit

Krybit is an emerging ransomware group that was first observed in April 2026, operating with apparent financial motivations based on their limited documented attacks against diverse sectors. The group's origin and affiliations remain unclear due to limited public intelligence, and it is unknown whether they operate as a Ransomware-as-a-Service model or as an independent entity. With only four known victims documented across geographically diverse regions including Mexico, Austria, Japan, and Botswana, the group appears to employ broad targeting rather than focused regional or sector-specific campaigns, though their attack methodology, encryption techniques, and data exfiltration practices have not been publicly documented by major security firms or law enforcement agencies. No notable high-profile campaigns or significant ransoms have been publicly reported, and no law enforcement actions against the group have been documented. Given the recent emergence of this group and extremely limited public reporting, Krybit's current operational status and capabilities remain largely unknown to the broader cybersecurity community. The group has been linked to 119 public disclosures across our corpus. First observed on a leak site on April 3, 2026; most recent post August 26, 2026. The operation is currently active.

Timeline of this disclosure

  • August 26, 2026www.neooftalmo.com.br listed by krybiton the group's public leak site

Other recent disclosures by krybit

krybit has been linked to 119 public victims on Darkfield. A sample of the most recent:

See the full krybit 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, www.neooftalmo.com.br is reported in Brazil, a country with 207 ransomware disclosures in our corpus.

If your organisation is affected

A listing by krybit means www.neooftalmo.com.br 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.
  • Report the incident to your national CERT, CERT.br (Brazil), as required for your jurisdiction.
  • Monitor for the data appearing on krybit'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.