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Junta Local de Conciliación y Arbitraje

Claimed by Tengu · listed 5 months ago

22.9 TB
Data size
5m
Age
since listed · data leaked

Status timeline

  1. ListedFeb 10, 2026
  2. Data leakeddate unknown

At a glance

Group
Tengu
Status
Data leaked
Country
Mexico
Sector
Public Sector
Listed on leak site
Feb 10, 2026
Data size
22.9 TB

About the victim

AI dossier — public-source company profile

Junta Local de Conciliación y Arbitraje is a public-sector body affiliated with the Government of Mexico City. It provides information and services related to the Local Commission for Labor Conciliation and Arbitration, facilitating labor dispute resolution for workers and employers in Mexico City. It operates as part of the city's official administrative and judicial labor framework.

Industry
Government Labor Relations & Dispute Resolution
Address
Ciudad de México (Mexico City), Mexico

Attack summary

Severity: critical — The victim is a Mexican government public-sector labor tribunal handling sensitive worker and employer records, including personal and legal case data. Data has been confirmed published (not merely listed), meaning regulated PII and government records are now publicly exposed.

The Tengu ransomware group claims to have published data belonging to Junta Local de Conciliación y Arbitraje, with the listing marked as 'data_published', indicating exfiltration and public disclosure of the organization's data.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Government labor records
  • Conciliation and arbitration case files
  • Employee/worker personal data
  • Organizational administrative documents

What the group claims

Affiliated with the Government of Mexico City, it provides information and services related to the Local Commission for Labor Conciliation and Arbitration (Junta Local de Conciliación y Arbitraje) in Mexico City (Ciudad de México).

The leak post

captured from the group's site
Shisa Ransomware Blog Shisa RANSOMWARE DATA LEAKS BLOG HOME AFFILIATE PROGRAM CONTACT crown-security.com.tw PUBLISHED Crown Security is a technology company specializing in information security and digital systems, offering advanced solutions to protect corporate networks and data from breaches and cyberattacks The company focuses on providing security consulting and implementing integrated protection systems tailored to each organization's needs 27,470 👁 Sileno Companies Inc PUBLISHED Sileno Companies Inc. A US company primarily operating in the hospitality and real estate sectors, its activities include: Hotel operation Property management Management of hotels' restaurants and bars Hospitality project development 22.9TB was encrypted in 14 hours on 3/5/2026 More than 67.07 GB was extracted 29,787 👁 Eos Technology srl PUBLISHED Eos Technology srl is a company with 15 years of experience in the ICT sector, initially starting as an assembly and repair laboratory for PCs and peripherals. Over time, it has developed expertise that has allowed it to become a partner of various international brands. The company offers a range of services including IT assistance, multimedia services, h…

Screenshot of the leak post

Leak screenshot for Junta Local de Conciliación y Arbitraje

Sources

Source

Indexed 5 months 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 tengu

Tengu is a recently emerged ransomware group first observed in October 2025, operating with apparent financial motivations and demonstrating a geographically diverse targeting approach across 49 documented victims. The group has primarily focused their operations on Morocco, the United States, India, Italy, and Indonesia, suggesting either opportunistic targeting or specific interest in these regions' economic sectors. Their victim profile spans multiple industries including technology, manufacturing, public sector, and agriculture and food production, indicating a broad targeting strategy rather than sector-specific focus. Due to the group's recent emergence and limited public documentation from established threat intelligence sources, specific details regarding their origin, affiliation status, technical methodology, encryption techniques, and operational structure remain largely undocumented by major cybersecurity agencies and research organizations. No notable high-profile campaigns or law enforcement actions have been publicly reported by CISA, FBI, or prominent security researchers at this time. The group's current operational status appears active given their recent emergence, though comprehensive threat intelligence profiles from established sources have yet to be published due to their nascent presence in the ransomware landscape. The group has been linked to 59 public disclosures across our corpus. First observed on a leak site on October 23, 2025; most recent post May 28, 2026. The operation is currently active.

Timeline of this disclosure

  • February 10, 2026Junta Local de Conciliación y Arbitraje listed by tenguon the group's public leak site
Data size
22.9 TB

Other recent disclosures by tengu

tengu has been linked to 59 public victims on Darkfield. A sample of the most recent:

See the full tengu dossier →

Sector and geography

This disclosure adds to ransomware activity in the Public Sector sector, which has 466 disclosures indexed across all operators we track. Geographically, Junta Local de Conciliación y Arbitraje is reported in Mexico, a country with 196 ransomware disclosures in our corpus.

If your organisation is affected

A listing by tengu means Junta Local de Conciliación y Arbitraje 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-MX (Mexico), as required for your jurisdiction.
  • Monitor for the data appearing on tengu'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.