The Structures Group Listed by sinobi Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On January 5, 2026, The Structures Group was listed by the sinobi ransomware group in connection with a ransomware attack that involved the exfiltration of internal files. The number of individuals affected has not been disclosed. This listing occurs amid ongoing ransomware activity targeting organizations that hold engineering, project, and client records. Public details remain limited to the group’s claim and the reported exfiltration of files.

Inside the incident

The incident was reported on January 5, 2026. The Structures Group was listed by the sinobi ransomware group, which stated that internal files had been exfiltrated during a ransomware attack. No confirmed count of affected individuals has been released, and further details on the timing, method of access, or volume of data have not been made public.

The group behind it: sinobi

Sinobi is a ransomware operator that uses encryption and data exfiltration to pressure victims. The group maintains a leak site where it lists organizations it claims to have targeted. Such listings constitute the group’s assertion of responsibility and are not independently verified in every case. Sinobi has appeared in public reporting on ransomware campaigns that combine file theft with demands for payment.

Who is The Structures Group?

The Structures Group, Inc. is a consulting engineering firm that provides structural engineering, special inspections, and forensic analysis. Its services include independent plan reviews and due diligence or risk analysis for commercial, residential, and institutional projects across sectors such as healthcare, education, and justice facilities. Organizations of this type routinely manage project documentation, client correspondence, and technical records tied to building safety and regulatory compliance.

What data was at risk

The available information states only that internal files were exfiltrated. The precise categories and volume of data have not been disclosed. Firms in structural engineering commonly maintain design documents, inspection reports, client contracts, and regulatory submissions, yet the exact contents of the exfiltrated material remain unconfirmed.

Why it matters

Exposure of internal engineering files can affect project confidentiality and, in some cases, reveal details about building specifications or client relationships. For the organization, the incident adds operational disruption and potential regulatory scrutiny. Individuals whose information appears in project files face the standard risks associated with any unauthorized release of personal or professional data, though the scale of such exposure here is unknown.

Were you affected?

Individuals can begin by monitoring official statements from The Structures Group for any notifications. Practical first steps include changing passwords for any accounts linked to the organization and enabling multi-factor authentication where available.

• Review recent account activity for unusual access.
• Request a copy of any personal data held by the firm if permitted under applicable privacy rules.
• Run a free exposure scan of your email address against known breach data sets to check for prior appearances.

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