Solumek Listed by thegentlemen Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On December 19, 2025, the ransomware group thegentlemen listed Solumek on its leak site, claiming to have carried out an attack that resulted in the exfiltration of internal files. Public details remain limited: the number of individuals affected is unknown, and no confirmation of data publication or ransom demands has been provided beyond the listing itself. The incident fits a pattern in which ransomware operators use public claims to pressure victims, adding to the steady stream of such listings observed across multiple sectors in recent years.

What happened

The listing appeared on December 19, 2025. It stated that internal files had been taken during a ransomware operation against Solumek. No further information on the timing of the intrusion, the volume of data, or the method of access has been disclosed. The scale of exposure and any subsequent actions by the group are not confirmed in available records.

The group behind it: thegentlemen

Thegentlemen is a ransomware operator that maintains a leak site to list claimed victims. Such groups typically encrypt systems and threaten to release stolen data if payment is not made. The listing of Solumek constitutes the group’s claim of involvement; independent verification of the underlying intrusion has not been reported.

About Solumek

Solumek SAS operates in the fields of photovoltaic solar energy, roadway management, and related technology services. Its work includes environmental management, road-safety strategies, and the development of Construction Development Areas, often in partnership with public bodies such as the National Road Safety Agency. Organisations in this sector routinely handle operational records, project documentation, and partner correspondence.

What data was at risk

The only detail released is that internal files were allegedly exfiltrated. The precise categories of information contained in those files have not been disclosed. Typical holdings for an organisation of this type may include project files, contractual documents, and technical specifications, yet the actual contents remain unconfirmed.

• Internal operational records
• Project and partnership documentation
• Technical and compliance materials

The real-world impact

Individuals or partners named in the files could face follow-on risks such as targeted phishing or misuse of contact details. For the organisation, the exposure of internal records may complicate ongoing projects and require additional review of access controls and third-party agreements. No public statements on remediation steps have been issued.

Were you affected?

Because the number of individuals involved is unknown, anyone who has worked with Solumek or its partners should monitor their accounts for unusual activity. Practical first steps include changing passwords for any associated services and enabling multi-factor authentication where available. Readers can also run a free exposure scan of their email address against known breach data to check for prior appearances in public listings.

AICompiled with AI assistance from public sources and published under our editorial standards.