Who is the Deadlock ransomware group?

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

Ransomware victim disclosure

← All victims

Laboratorio de Diagnóstico y Aplicaciones Terapéuticas, SA

listed as Laboratorio de Diagnóstico y Aplicaciones Terapéuticas, SA (LETI) · Claimed by Deadlock · listed 4 hours ago

Today

Age

since listed · listed for ransom

Status timeline

ListedAug 20, 2026

Current state: Listed for ransom

At a glance

Group: Deadlock
Status: Listed for ransom
Country: Spain
Sector: Biopharmaceutical
Listed on leak site: Aug 20, 2026

About the victim

AI dossier — public-source company profile

LETI is a Spanish biopharmaceutical company founded in 1999 and headquartered in Madrid. The company specializes in research, development, and manufacturing of products for allergy diagnostics and allergen immunotherapy (ASIT).

Industry: Biopharmaceutical & Allergy Diagnostics
Address: Madrid, Spain
Founded: 1999

Attack summary

Severity: high — Confirmed exfiltration of sensitive personal data (passports, bank statements, credentials) from a healthcare/biopharmaceutical company. Medical and financial PII at scale with regulatory sensitivity in EU jurisdiction.

Deadlock claims to have exfiltrated data from LETI after the company ignored contact for 72 hours. The group threatens to publish a full data dump on August 18 unless the company pays an unspecified ransom for deletion.

high

Data the group says was taken

AI dossier — extracted from the leak post

Employee/personal identification documents
Financial records
Credentials and authentication materials

What the group claims

A Spanish biopharmaceutical company founded in 1999 and headquartered in Madrid. Specializes in the research, development and manufacture of products for allergy diagnostics and allergen immunotherapy (ASIT).

The leak post

captured from the group's site

Publishes after: <b>10d 21h 57m</b>
GTS legally registered as Global Terminal Hizmetleri A.Ş. It is the largest independent storage terminal for liquid fuels and oil in the entire Mediterranean region. 
LT Group / Fortune Tobacco Corp
Amount: 27 GB | Files: 14,836
They ignored our messages for 72 hours.. Now we publish the details of the breach. Data leaked: 107 Passports (MRZ) 1,712 Bank Statements (PNB + Holco USD accounts) 212 Promissory Notes (Eton Properties, PHP 2.53B debt) 231 BIR/eFPS credentials Samples: Passport_Johnny_Tan.pdf Holco_USD_Statement.pdf Eton_Debt_212.pdf Full leak: August 18. Contact: Session ID provided in emails. Pay for the data or pay for its permanent deletion. Otherwise, the full dump will be public. 
Publishes after: <b>2d 12h 7m</b>
United Fiber Optic Communication Inc. (UFOC) is an established, publicly traded telecommunications company from Taiwan. The company acts as a total solution provider for communication networks and specializes in the manufacture of fiber optic cables and the provision of integrated technological systems. 
Ahenk Laboratuvarı is an ISO 15189-accredited medical laboratory in Turkey, founded in 1998 and located in Istanbul-Şiş…

Screenshot of the leak post

Leak screenshot for Laboratorio de Diagnóstico y Aplicaciones Terapéuticas, SA (LETI)

Sources

Leak posthttp://deadblogdbdu5wprek7wa2o4ce7rnt6u6ntqeud3hzjjcveosgpsqqqd.onion

Source

Indexed 4 hours 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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About Deadlock

Deadlock is a ransomware group first observed in June 2026 with an apparent financial motivation, having claimed responsibility for attacks against at least 10 known victims across a geographically diverse target set. Given the recency of their emergence and limited public documentation by major threat intelligence organizations such as CISA, FBI, or Mandiant at this time, a comprehensive technical profile cannot be fully established. Based on available victimology data, the group has demonstrated a targeting pattern spanning Singapore, China, Sweden, Spain, and Nigeria, suggesting an opportunistic or globally distributed operational scope rather than a regionally focused campaign. Targeted sectors include manufacturing, business services, telecommunications, and financial services, indicating a preference for industries with high operational dependencies and potential for significant disruption, which is consistent with financially motivated ransomware actors seeking maximum leverage for ransom payment. No confirmed attribution regarding country of origin, RaaS affiliation, or specific tooling has been publicly documented by authoritative sources as of this profile's preparation. Due to the group's nascent operational timeline and the limited volume of publicly verified intelligence, analysts should treat this profile as preliminary and subject to significant revision as additional technical indicators, victim disclosures, and research reporting become available. Continued monitoring is advised given the cross-sector and cross-regional targeting behavior observed in this early operational phase. The group has been linked to 110 public disclosures across our corpus. First observed on a leak site on June 15, 2026; most recent post August 20, 2026. The operation is currently active.

Timeline of this disclosure

August 20, 2026Laboratorio de Diagnóstico y Aplicaciones Terapéuticas, SA (LETI) listed by Deadlockon the group's public leak site

Other recent disclosures by Deadlock

Deadlock has been linked to 110 public victims on Darkfield. A sample of the most recent:

See the full Deadlock dossier →

Sector and geography

This disclosure adds to ransomware activity in the Biopharmaceutical sector. Geographically, Laboratorio de Diagnóstico y Aplicaciones Terapéuticas, SA (LETI) is reported in Spain, a country with 351 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Deadlock means Laboratorio de Diagnóstico y Aplicaciones Terapéuticas, SA (LETI) appeared on a ransomware extortion site and is being pressured to pay before any publication. 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 Deadlock'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.