Sintac Recycling listed on Qilin ransomware leak site

• Ransomware group: Qilin
• Country: Spain
• Sector: Manufacturing
• Announcement date: December 29, 2025

Qilin ransomware group claims breach of Sintac Recycling

The threat actor known as the Qilin ransomware group has officially listed the Spanish organization Sintac Recycling on its dedicated leak portal. This announcement, made on December 29, 2025, involves an allegation of a significant data breach against the company. By appearing on their leak site, the group is utilizing a common tactic used by modern ransomware operators to signal their involvement in a successful intrusion.

The listing serves as a public declaration by the threat actors, signaling that they believe they have successfully compromised the target's digital environment. Such announcements are a hallmark of contemporary cyber extortion campaigns, where the visibility of the victim's name is used as a primary tool for coercion.

Details of the alleged attack

According to the claims made by the Qilin group, the threat actors gained unauthorized access to the internal systems of Sintac Recycling. The group asserts that they have successfully exfiltrated data from the organization's network. This specific method of operation is characteristic of double extortion tactics. In a double extortion scenario, attackers do not merely encrypt a victim's files to disrupt operations; they also steal sensitive information to use as leverage. The threat of leaking this stolen data publicly or selling it on underground forums provides the attackers with additional pressure to ensure the victim complies with ransom demands.

The listing of a company on a leak site is often a precursor to more aggressive actions. If the victim does not meet the attackers' demands, the group typically proceeds to release the stolen information in stages to maximize psychological and reputational pressure. This tactic is designed to exploit the fear of regulatory scrutiny, loss of intellectual property, and damage to brand reputation.

Status of the compromised data

At this stage, the specific nature and content of the leaked or compromised data remain unknown. The current records and available documentation do not specify what types of files were accessed or exfiltrated during the incident. Furthermore, the listing does not provide information regarding the volume of data stolen or the total number of files involved.

The listing names no specific data types or categories of information that have been targeted or stolen.

About Sintac Recycling

Sintac Recycling is a company based in Spain that specializes in the recycling and management of plastic waste. The organization plays a role in the circular economy by focusing on the processes required to integrate plastic raw materials back into the production cycle. As a player in the manufacturing and waste management sector, the company's operations are central to environmental sustainability and resource management within the region.

Potential risks and organizational implications

This incident may pose a significant risk to the operational continuity of Sintac Recycling. Depending on the actual content of the compromised data, several secondary risks may emerge. If personal or sensitive information is involved, there is a heightened risk of identity theft or the launch of targeted phishing attacks aimed at the organization's employees and business partners.

Because the organization is headquartered in Spain, the incident may lead to legal consequences under the EU General Data Protection Regulation (GDPR). Organizations operating within the European Union are subject to strict requirements regarding the protection of personal data and the timely reporting of breaches. Consequently, the organization may be required to fulfill specific data breach notification obligations and inform all affected parties to remain compliant with legal frameworks.

Given the established history and past activities of the Qilin group, there is a possibility that the organization's data may be published or sold on cybercriminal marketplaces. To mitigate such risks, organizations in the manufacturing and recycling sectors often focus on strengthening their defensive postures through robust backup strategies, network segmentation, and continuous monitoring. Implementing strict access controls and conducting regular employee training on phishing awareness are also standard defensive measures used to reduce the likelihood of successful exfiltration.