high severity May 19, 2025 · 4 min read Unverified claim — what this is

BALNEARIO DE MONDARIZ Listed by Qilin Ransomware Group

If you are a customer of Balneario De Mondariz, here’s what is being claimed, and what it would mean for you.

El Balneario de Mondariz, complejo hotelero y termal de Galicia. Hotel con 194 habitaciones; moderno balneario con aplicación de aguas mineromedicinales; el Palacio del Agua, spa de 3000m2; campo de golf de 18 hoyos y mucho ms
— from Qilin’s own leak-site posting. This is the group’s claim, quoted verbatim; it is not GalaxyWarden’s reporting and has not been independently verified.

BALNEARIO DE MONDARIZ Listed by Qilin Ransomware Group

On May 19, 2025, the Spanish hotel and thermal spa Balneario de Mondariz appeared on the leak site of the qilin ransomware group, with attackers claiming to have exfiltrated internal files from the 194-room resort in Galicia.

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What Public Reporting Shows

Public reporting indicates the resort’s systems were compromised in a ransomware incident. The qilin group posted details on its dark-web leak portal, listing Balneario de Mondariz and stating that sensitive internal documents had been taken. No exact victim count or list of specific data types has been publicly detailed beyond the broad description of “internal files.” The resort itself operates a large thermal spa, a 3,000-square-metre water palace, an 18-hole golf course, and other guest services that rely on reservation systems, billing records, and guest databases.

Available reporting describes the posting as part of qilin’s standard tactic of publishing samples or announcements after encryption to pressure victims into payment. As of the publication date, there is no confirmed evidence that the group has released the full dataset publicly, but the mere appearance on the leak site means the stolen material could surface at any time.

Why This Matters for You and Your Family

When a hotel or spa is breached, the information exposed often includes names, addresses, phone numbers, email addresses, dates of birth, payment details, and sometimes passport or national ID copies collected during check-in. If you or any member of your family stayed at Balneario de Mondariz or used its services in recent years, your personal data may now sit in a ransomware actor’s archive.

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What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo

value redacted in this samplephone, household, property recordsBeenVerified

value redacted in this sample580 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach

unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Report details & sourcing

Attributed to Qilin · 2349 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed May 19, 2025

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

Threat-actor tracker

Qilin — 2349 incidents tracked

Every breach we've attributed to Qilin, in one running log. See who else they've hit →

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