Teruya Brothers Ltd listed by Qilin ransomware group

• Ransomware group: Qilin
• Country: Uruguay
• Sector: Agriculture and Food Production
• Announcement date: December 9, 2025

The Qilin ransomware group has officially listed Teruya Brothers Ltd on its dedicated leak site, alleging that a significant data breach has occurred. This announcement, made on December 9, 2025, marks a new development in the ongoing threat landscape facing the agriculture and food production sector. The group claims to have successfully infiltrated the organization's networks, asserting that they have exfiltrated sensitive data during the intrusion.

The details of the claim

According to the announcement posted by the Qilin group, the threat actors gained unauthorized access to the internal networks of Teruya Brothers Ltd. The group claims that this access allowed them to move through the environment and extract information. By publishing the organization's name on their leak platform, the group has signaled that the stolen data may be made available to the public if their demands are not met.

This type of public listing is a common tactic used by ransomware groups to increase pressure on a victim. These groups often use their leak sites as a form of psychological warfare, showcasing the names of targeted companies to demonstrate their capabilities and to shame the organizations into compliance. The listing serves as a warning that the data exfiltration phase of the attack has been completed and the extortion phase is now active.

Information regarding the leaked data

At this stage of the incident, there is no screenshot or detailed information available regarding the nature of the leaked or threatened data. The listing does not specify the volume of files involved or the specific types of documentation that were allegedly stolen. Consequently, the listing names no specific data types.

In many ransomware incidents, the lack of immediate detail can be a period of intense uncertainty for the targeted organization. Without a clear inventory of what has been taken, it is difficult for the victim to assess the full scope of the compromise. This ambiguity is often a deliberate part of the extortion process, as it forces the organization to prepare for the worst-case scenario regarding all possible data types.

About Teruya Brothers Ltd

Teruya Brothers Ltd is an agriculture and food production company based in Uruguay. The organization operates within the critical fields of agricultural activities and the food supply chain. Given its role in the food supply chain, the company plays a part in the essential movement of goods from production to consumption.

Risk assessment and industry implications

This incident may pose significant risks to Teruya Brothers Ltd regarding data privacy and operational continuity. Given the Qilin group's known use of the double extortion method, the publication of the allegedly exfiltrated data or the exertion of pressure on the organization via ransom demands may be observed. Double extortion is a sophisticated technique where attackers not only encrypt a company's systems to disrupt operations but also steal sensitive data to threaten its public release.

The potential consequences for the organization are multifaceted. From a legal standpoint, the organization may face legal obligations under Uruguay's data protection regulations, which could potentially lead to administrative sanctions. Furthermore, the use of leaked data for identity theft or targeted phishing attacks remains a possibility, posing a long-term threat to the organization's stakeholders and partners.

The Qilin group itself is identified as a Ransomware-as-a-Service (RaaS) group that has been active since 2022. As a RaaS entity, they provide the ransomware infrastructure to affiliates, allowing a wider range of actors to conduct these types of attacks. For organizations in the agriculture and food production sector, maintaining robust cybersecurity posture is essential to protect the integrity of the supply chain. Standard defensive measures typically include implementing multi-factor authentication, maintaining offline backups, and conducting regular network monitoring to detect unauthorized access before data exfiltration can occur.