Was CCOO Servicios hit by ransomware?

CCOO Servicios was listed by the hunters ransomware operation (Spain), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the hunters ransomware group?

hunters is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the CCOO Servicios breach?

hunters published data attributed to CCOO Servicios. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

CCOO Servicios (Federación de Servicios de Comisiones Obreras)

listed as CCOO Servicios · Claimed by Hunters · listed 1 year ago

17m

Age

since listed · data leaked

Status timeline

ListedFeb 22, 2025
Data leakeddate unknown

At a glance

Group: Hunters
Status: Data leaked
Country: Spain
Sector: Business Services
Listed on leak site: Feb 22, 2025

About the victim

AI dossier — public-source company profile

CCOO Servicios is the Services Federation of Comisiones Obreras (CCOO), Spain's major trade union organization. The federation provides labor representation, collective bargaining, workplace health & safety services, and labor dispute resolution across multiple sectors in Spain.

Industry: Trade Union & Labor Services

Attack summary

Severity: high — Confirmed exfiltration and encryption of a major trade union's data, which likely includes member PII, labor agreements, and sensitive organizational records affecting thousands of workers and employers across Spain. Trade unions are critical social infrastructure.

The hunters group claims to have exfiltrated data and encrypted systems belonging to CCOO Servicios. The specific data categories targeted are not detailed in the available leak post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Union member records
Labor negotiation documents
Collective bargaining agreements
Internal organizational communications
Financial/administrative data

What the group claims

Exfiltraded data : yes - Encrypted data : yes

Sources

Victim siteccoo-servicios.es
Leak posthttps://hunters55rdxciehoqzwv7vgyv6nt37tbwax2reroyzxhou7my5ejyid.onion/companies/6679663115

Source

Indexed 1 year 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 hunters

Hunters International is a ransomware group first observed in October 2023 that operates with primary financial motivations, having claimed responsibility for attacks against at least 307 known victims across a broad range of sectors and geographies. The group is believed to have acquired the source code and infrastructure of the defunct Hive ransomware operation following Hive's disruption by law enforcement in January 2023, though Hunters International has publicly disputed characterizations that it is a direct Hive rebrand, asserting instead that it independently purchased the codebase; the group operates as a Ransomware-as-a-Service model, recruiting affiliates to conduct intrusions on its behalf. Hunters International employs double extortion tactics, exfiltrating victim data prior to encryption and threatening public release on a dedicated leak site to increase pressure on victims to pay; initial access vectors observed across reported incidents include phishing, exploitation of publicly exposed remote services, and credential abuse, with the group deploying its Rust-based encryptor derived from Hive's codebase. The group has demonstrated a notably indiscriminate targeting pattern, with victims concentrated in the United States, United Kingdom, Canada, France, and Germany spanning Business Services, Manufacturing, Technology, Healthcare, and Energy sectors, reflecting a financially opportunistic rather than strategically selective approach; no single landmark ransom payment or named high-profile campaign has been singularly attributed to the group in major public reporting as of available documentation. As of the most recent publicly available threat intelligence reporting, Hunters International remains an active and operational ransomware threat with a growing victim count and no confirmed law enforcement disruption or rebranding. The group has been linked to 307 public disclosures across our corpus. First observed on a leak site on October 20, 2023; most recent post May 27, 2025. The operation is currently inactive.

Also tracked as: Hunters International.

Timeline of this disclosure

February 22, 2025CCOO Servicios listed by hunterson the group's public leak site

Other recent disclosures by hunters

hunters has been linked to 307 public victims on Darkfield. A sample of the most recent:

See the full hunters dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 3,796 disclosures indexed across all operators we track. Geographically, CCOO Servicios is reported in Spain, a country with 129 ransomware disclosures in our corpus.

If your organisation is affected

A listing by hunters means CCOO Servicios 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 hunters'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.