Clop ransomware group lists RHEEM.COM on its leak site

• Ransomware group: Clop
• Country: United States
• Sector: Manufacturing
• Announcement date: November 7, 2025

Clop ransomware group claims data breach at Rheem Manufacturing Company

The Clop ransomware group has listed Rheem Manufacturing Company on its leak site, alleging a data breach. This announcement, made on November 7, 2025, represents an allegation by the threat actor that the group has successfully gained access to the organization's data.

The details of the alleged attack

According to the information provided by the threat actor, the incident was announced on November 7, 2025. In the announcement, the group shared a warning message directed at the organization. Within this message, the group claimed that the organization disregarded the security of its customers. This type of public shaming is a common tactic used by ransomware groups to pressure victims into meeting their demands.

Ransomware leak sites function as a platform for threat actors to host stolen information or to announce their targets. In many modern cyberattacks, groups employ a technique known as double extortion. In this scenario, attackers do not just encrypt an organization's systems to disrupt operations; they also steal sensitive data. The threat actors then threaten to publish this data on their leak sites if the ransom is not paid. This creates a secondary layer of pressure, as the victim faces the risk of public exposure and regulatory scrutiny.

Information regarding the leaked data

At this time, there is no specific information regarding the nature of the leaked data in the provided record or the associated screenshots. The listing names no specific data types that have been compromised.

About Rheem Manufacturing Company

Rheem Manufacturing Company is a global manufacturer of residential and commercial heating, cooling, and water heating products. Headquartered in Georgia, USA, the company specializes in HVAC and water heating solutions.

Assessment and potential implications

Considering the past activities of the Clop group, it is assessed that this situation may lead to the exposure of the organization's sensitive data. Because the organization is based in the United States, a potential data breach could trigger state-level data protection laws as well as federal regulations. The publication of such data may create secondary risks for employees and customers, such as identity theft or targeted phishing attacks.

Furthermore, the group's tendency to exploit vulnerabilities in file transfer software may lead to scrutiny regarding the organization's supply chain security. When organizations face such threats, common defensive steps often include implementing robust patch management to address software vulnerabilities, enforcing multi-factor authentication across all systems, and maintaining rigorous monitoring of network traffic to detect unauthorized data exfiltration.

Summary of the situation

• Organization: Rheem Manufacturing Company
• Threat Actor: Clop
• Claimed Date: November 7, 2025
• Type of Incident: Alleged data breach