Termolar listed on Rhysida ransomware leak site

• Ransomware group: Rhysida
• Country: Brazil
• Sector: Manufacturing
• Announcement date: May 18, 2025

The Rhysida ransomware group has listed the Latin American manufacturing company Termolar on its dedicated leak site. This announcement, made on May 18, 2025, marks a significant development for the organization, as the group claims to have successfully executed a cyberattack resulting in a data breach.

The claimed attack and event details

According to the announcement posted by the Rhysida ransomware group, the attackers claim to have gained unauthorized access to the networks belonging to Termolar. The group alleges that they have successfully exfiltrated data from the organization's systems. This claim of unauthorized access and subsequent data theft is a central component of the group's announcement on their leak site.

Ransomware groups often use leak sites to pressure victims into paying ransoms. These sites serve as a public platform where the threat actors can display the names of targeted organizations and, in some cases, provide evidence of the stolen information. The listing of a major manufacturer like Termolar suggests a targeted effort by the Rhysida group to impact the organization's operations and reputation.

Information regarding the data involved

While the group has claimed a data breach, the specific details regarding the stolen information remain unclear. The content of the data shown in the screenshots provided by the attackers appears to be blurred, making it impossible to identify any specific data types or the exact nature of the information taken during the incident.

The listing names no specific data types.

About Termolar

Termolar is a prominent player in the Latin American industrial landscape. The company is recognized as the largest manufacturer of thermal conservation products within Latin America. Their specialized operations focus on the design and production of a wide variety of insulated containers and various thermal products.

Analysis and potential implications

The tactics employed by the Rhysida group in this instance appear to follow the pattern of double-extortion. In a double-extortion scheme, threat actors do not merely encrypt an organization's data to disrupt operations; they also steal sensitive information to use as leverage. The threat actors threaten to release the exfiltrated data on public forums if the ransom is not met, significantly increasing the pressure on the victim.

Because Termolar operates within the manufacturing sector, the breach carries specific risks. There is a potential risk regarding the exposure of intellectual property and sensitive trade secrets, which are vital to a company's competitive advantage in the manufacturing industry. Furthermore, if the breach involves personal information belonging to employees or customers, those individuals may face an increased risk of identity theft or may be targeted in subsequent phishing attacks.

From a regulatory perspective, the organization may face legal obligations under Brazil's LGPD regulations, which may require the company to fulfill specific data breach notification requirements. The group's history of activity suggests that such attacks can lead to significant disruptions in operational continuity and can cause lasting damage to a corporation's reputation.

To mitigate such risks, organizations in the manufacturing sector often focus on strengthening their defensive posture. This typically involves implementing robust network segmentation to prevent lateral movement, maintaining strict access controls, and ensuring comprehensive monitoring of data exfiltration attempts. Additionally, maintaining regular, offline backups and conducting regular security awareness training can help organizations defend against the evolving tactics used by ransomware groups like Rhysida.