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Quironsalud

Claimed by Direwolf · listed 7 days ago

7d
Age
since listed · data leaked

Status timeline

  1. ListedAug 10, 2026
  2. Data leakeddate unknown

At a glance

Group
Direwolf
Status
Data leaked
Country
Spain
Sector
Healthcare
Listed on leak site
Aug 10, 2026

About the victim

AI dossier — public-source company profile

Quirónsalud is a major Spanish hospital group operating a network of hospitals and medical clinics across Spain. With over 52,000 professionals, they offer comprehensive medical services including emergency care, specialized departments (cardiology, oncology, traumatology), reproductive medicine, ophthalmology, and aesthetic medicine, along with digital health services.

Industry
Healthcare — Hospital Network & Physician Clinics
Employees
52000

Attack summary

Severity: high — Confirmed data publication of a major healthcare provider with patient records and medical information exposed. Healthcare data is regulated (GDPR, LOPD-GDD in Spain) and sensitive at scale; exfiltration of patient information from a 52,000-employee hospital network poses significant harm.

The direwolf group claims to have compromised Quirónsalud and published exfiltrated data. The leak post provides minimal detail on the scope of data or operational impact.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Patient records
  • Medical histories
  • Healthcare administrative data

What the group claims

Hospitals & Physicians Clinics

Sources

Source

Indexed 7 days 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 direwolf

Direwolf is a ransomware group that emerged in May 2025 with primarily financial motivations, having targeted 71 known victims across multiple sectors and geographic regions. The group's origin and potential affiliations remain undocumented in public threat intelligence reports, with no confirmed information regarding whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and technical capabilities have not been extensively documented by major cybersecurity firms or government agencies, though their targeting patterns indicate a focus on manufacturing, technology, healthcare, and transportation/logistics sectors across Malaysia, the United States, Thailand, Singapore, and Taiwan. No major high-profile campaigns or significant ransomware demands have been publicly attributed to this group by CISA, FBI, or established security researchers such as Mandiant. Given the group's recent emergence and limited public documentation, their current operational status and long-term threat posture remain unclear, requiring continued monitoring by the cybersecurity community to establish a more comprehensive threat profile. The group has been linked to 96 public disclosures across our corpus. First observed on a leak site on May 27, 2025; most recent post August 17, 2026. The operation is currently active.

Also tracked as: DIRE WOLF.

Timeline of this disclosure

  • August 10, 2026Quironsalud listed by direwolfon the group's public leak site

Other recent disclosures by direwolf

direwolf has been linked to 96 public victims on Darkfield. A sample of the most recent:

See the full direwolf 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, Quironsalud is reported in Spain, a country with 129 ransomware disclosures in our corpus.

If your organisation is affected

A listing by direwolf means Quironsalud 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, INCIBE-CERT (Spain), as required for your jurisdiction.
  • Monitor for the data appearing on direwolf'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.