Disclosure context

About lynx

Lynx is a relatively new ransomware group that emerged in July 2024, operating with apparent financial motivations and demonstrating rapid scaling capabilities with 397 documented victims within their first few months of operation. The group's origin and specific affiliations remain unclear due to their recent emergence, though their targeting patterns suggest a sophisticated operation that may operate independently rather than as a traditional Ransomware-as-a-Service model. Based on their victim distribution, Lynx appears to employ broad-spectrum targeting methodologies focusing heavily on English-speaking countries, with the United States, United Kingdom, Canada, Germany, and Australia representing their primary geographic targets, while concentrating their attacks on manufacturing, business services, technology, and transportation/logistics sectors, though specific technical details regarding their initial access vectors, encryption methods, and data exfiltration practices have not yet been extensively documented by major security research organizations. Due to the group's recent emergence, there are no widely reported major campaigns or high-profile incidents that have gained significant public attention from law enforcement agencies or established threat intelligence firms. As of late 2024, Lynx appears to remain active with no reported law enforcement disruptions or operational changes. The group has been linked to 410 public disclosures across our corpus. First observed on a leak site on July 29, 2024; most recent post May 10, 2026. The operation is currently active.

Timeline of this disclosure

May 10, 2026ossistemes.com listed by lynxon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 2,524 disclosures indexed across all operators we track. Geographically, ossistemes.com 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

← All victims

ossistemes.com

Claimed by lynx · listed 11 days ago

10d

Age

since listed · data leaked

Status timeline

Listed
May 10, 2026
Data leaked

At a glance

Group: lynx
Status: Data leaked
Country: ES
Sector: Technology
Listed on leak site: May 10, 2026

About the victim

AI dossier — public-source company profile

OS Sistemes i Comunicacions, S.L. is a Spanish SME based in L'Hospitalet de Llobregat (Barcelona) that provides technology solutions specifically tailored to food retail businesses. Their core offering is Totpes, a POS/stock-management/invoicing/labelling application for food shops, complemented by cash-management hardware (Cashlogy), card printers (Edikio), IP cameras (Axis), and fiscal compliance solutions such as Veri*Factu. They serve small businesses and trade guilds across Catalonia and participate in sector fairs such as Meat Attraction at IFEMA Madrid.

Industry: IT Solutions & Point-of-Sale Technology for Food Retail
Address: Esquadres 12, local, 08901 L'Hospitalet de Llobregat (Barcelona), Spain

Attack summary

Severity: high — Data has been confirmed as published by the threat actor, indicating successful exfiltration. OS Sistemes handles client business data, POS transaction records, and invoicing information for numerous food-retail SME clients, making the downstream exposure significant. No regulated medical or government data is evident, keeping this below critical.

The Lynx ransomware group claims to have compromised OS Sistemes and has published data ('data_published' status), indicating confirmed exfiltration of company data; no ransom amount or precise data volume has been disclosed in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Internal business documents
Client records
Financial/invoicing data
Network and system configuration data

What the group claims

OS Sistemes is a tech company that helps businesses bring their digital projects to life. They work closely with clients to design, build, and deliver custom technology solutions. Whether it's software development, network setup, or bringing new tech ideas to reality, their team knows how to tackle projects that other tech companies might find tricky. They're all about finding smart ways to solve technical challenges and keep businesses running smoothly.

Sources

Victim siteossistemes.com
Leak posthttp://lynxblogco7r37jt7p5wrmfxzqze7ghxw6rihzkqc455qluacwotciyd.onion/leaks/6a003ae62b391873c7dd53f8

Source

Indexed 11 days 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.