Disclosure context

About lamashtu

Based on the limited available information, Lamashtu is an emerging ransomware group that was first observed in April 2026, appearing to be financially motivated based on their operational patterns. The group's origin and potential affiliations remain unclear due to their recent emergence and limited public documentation by major threat intelligence organizations. Lamashtu's attack methodology and specific technical capabilities have not been extensively documented by established security researchers, though their targeting patterns suggest they employ standard ransomware deployment techniques across multiple industry verticals. The group has conducted at least 8 confirmed attacks, demonstrating a geographically diverse targeting approach with victims identified in France, Italy, the United States, Singapore, and Malaysia, while focusing primarily on business services, manufacturing, transportation and logistics, hospitality and tourism, and energy sectors. Given the group's recent first observation in April 2026 and limited public threat intelligence reporting from established sources like CISA, FBI, or major security firms, Lamashtu appears to represent a newly active threat actor whose current operational status and long-term capabilities require further monitoring and analysis. The group has been linked to 30 public disclosures across our corpus. First observed on a leak site on April 13, 2026; most recent post May 19, 2026. The operation is currently active.

Timeline of this disclosure

April 14, 2026IPARBILBAO ABOGADOS - ROCA JUNYENT listed by lamashtuon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,640 disclosures indexed across all operators we track. Geographically, IPARBILBAO ABOGADOS - ROCA JUNYENT is reported in ES, a country with 116 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

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IPARBILBAO ABOGADOS - ROCA JUNYENT

Claimed by lamashtu · listed 1 month ago

37d

Age

since listed · data leaked

Status timeline

Listed
Apr 14, 2026
Data leaked

At a glance

Group: lamashtu
Status: Data leaked
Country: ES
Sector: Business Services
Listed on leak site: Apr 14, 2026

About the victim

AI dossier — public-source company profile

IparBilbao Abogados – Roca Junyent is a global law firm based in Bilbao, Spain, integrated into the Roca Junyent Group. Founded in 2014 by four founding partners with over 25 years of combined experience, the firm provides legal advisory and litigation services to businesses, public administrations, and private individuals across civil, commercial, tax, labour, and administrative law. The firm advises financial institutions, construction companies, and enterprises across various sectors including insurance law, sports law, M&A, and compliance.

Industry: Legal Services
Address: Bilbao, Basque Country, Spain
Founded: 2014

Attack summary

Severity: high — The disclosure status is 'data_published', indicating confirmed exfiltration. A law firm holds highly sensitive client data including privileged legal communications, financial records, personal data of private individuals, and confidential corporate information, representing significant exposure of sensitive business and personal data at scale.

The Lamashtu ransomware group claims to have attacked IparBilbao Abogados – Roca Junyent and has published data, indicating confirmed exfiltration; the leak post text mirrors the firm's own service description, suggesting access to internal or web-sourced materials, though no explicit data volume or encryption confirmation is stated.

high

Data the group says was taken

AI dossier — extracted from the leak post

Legal advisory documents
Client business records
Corporate and commercial files
Tax and labour law documents
Administrative law case files
Private client personal data
Real estate and family law records
Financial institution case files

What the group claims

Prestamos servicios de asesoramiento legal a la empresa y los negocios, incluyendo sus aspectos civiles, mercantiles, tributarios, laborales, de derecho administrativo, tanto de asesoramiento y defensa de administraciones, como de empresas.

Sources

Source

Indexed 1 month 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.