Solumek listed on thegentlemen ransomware leak site

• Ransomware group: thegentlemen
• Country: United States
• Sector: Energy & Utilities
• Announcement date: December 19, 2025

Thegentlemen claims Solumek has been compromised

The threat actor known as thegentlemen has officially listed the organization Solumek on its dedicated leak platform. This announcement, which surfaced on December 19, 2025, indicates that the group claims to have successfully compromised the organization's data. However, despite the claim of a successful breach, the group has not yet provided any specific details regarding the content or the volume of the alleged stolen information.

In modern cyberattack scenarios, ransomware groups often utilize leak sites to exert pressure on their victims. These platforms serve as a public bulletin board where threat actors post the names of organizations they have targeted. This tactic is frequently associated with double extortion strategies, where attackers not only encrypt an organization's systems but also threaten to release sensitive data to the public to increase the likelihood of a ransom payment. While the listing on the site confirms the group's intent to publicize the incident, the lack of immediate evidence makes it difficult to assess the full scope of the situation.

Details regarding the alleged data breach

The announcement published by thegentlemen group on December 19, 2025, marks a significant development for the targeted entity. While the group asserts that they have gained access to the organization's data, the available evidence remains highly limited. The screenshot provided by the threat actor does not contain any specific data samples, file lists, or indicators of the types of information that may have been exfiltrated.

Regarding the specific contents of the breach, the listing names no data types. The provided visual evidence is restricted to the group's own blog page and a verification error, offering no insight into the nature of the allegedly leaked data. Consequently, there is currently no information available concerning the specific files, databases, or sensitive documents that the group claims to possess.

Organization profile: Solumek

Solumek SAS is a Colombia-based company that specializes in a variety of technical and engineering sectors. The organization focuses on photovoltaic solar energy solutions, roadway management, and various technological infrastructure projects. Their service portfolio is broad, encompassing engineering and consulting services such as environmental management, the implementation of solar energy solutions in rural areas, and the development of road safety strategies.

Impact and potential risks for the organization

This incident may lead to significant disruptions in the organization's operational processes and could negatively impact its corporate reputation. Although the specific content of the leaked data remains unclear, the nature of Solumek's business involves strategic partnerships with public agencies. Because of these connections, secondary risks may emerge, such as targeted phishing campaigns or potential supply chain attacks targeting the organization's partners or clients.

As the organization is based in the United States, any potential data breaches may be subject to various state-level privacy laws, which govern how companies must respond to and report the loss of sensitive information. It is important to note that public information regarding the thegentlemen group remains limited, making it difficult to attribute the attack to a specific known entity with high certainty.

For organizations operating in critical sectors like energy and utilities, such incidents highlight the necessity of robust cybersecurity postures. To mitigate risks, it is often advisable for organizations to conduct comprehensive security audits and carefully review their relevant legal notification obligations. Maintaining rigorous monitoring and implementing strict access controls are common defensive steps used to protect against the types of unauthorized access claimed by ransomware groups.