Hecker Holzsystembau

German construction company specializing in custom timber houses, sustainable wood construction, and prefabricated buildings. It offers complete project planning, roofing, extensions, renovations, and turnkey solutions for residential, commercial.

SUMMARY

We obtained the complete project archive of Hecker Holzsystembau , a German wood construction company. The dataset contains tens of thousands of files spanning 2021 through 2026, extracted from a network storage server. The breach covers the full operational scope: production plans for hundreds of construction projects, tender and bid documentation, structural engineering calculations, building permit applications, financial records including invoices and cost estimates, employee timesheets, and legal correspondence. A handful of named individuals are identified in the data.

The archive is organized by completed and active construction projects across residential, commercial, and public sector buildings. Project documentation includes detailed manufacturing plans, material specifications, structural calculations, and compliance certificates. Financial exposure includes project cost calculations, price lists, and subcontractor invoices.

WHAT WE HAVE

Personal Data

Employee records are present in the dataset. We have monthly timesheets for named office staff, safety training documentation, and internal communications. The personnel files include work schedules and employee briefings. Specific individuals have been identified by name.

Financial Records

The dataset contains several thousand financial documents. We have project cost calculations, subcontractor invoices, material price lists, and bid pricing documentation. The financial archive spans multiple years and covers both completed and ongoing construction projects.

Legal & Compliance

Legal documentation is included in the breach. We have building permit applications, structural engineering certifications, fire safety concepts, and compliance certificates. The dataset contains correspondence with legal counsel, expert opinions, and judgment documents. Public sector tender requirements and reference certificates are present.

Intellectual Property

The manufacturing archive contains several thousand production plans. We have detailed CAD drawings in .dwg and .dxf formats, structural calculations, and technical specifications for wood construction systems. Material lists, parts lists, and assembly documentation are included. The dataset reveals construction methodologies, pricing structures, and proprietary building techniques.

Construction Project Documentation

Active and completed project files are present. We have tender documents and bid submissions for public and private construction contracts. Construction diaries document daily progress on building sites. Project schedules, material orders, and subcontractor agreements are included. The archive covers residential housing developments, commercial buildings, and public facilities including kindergartens and sports halls.

The full scope of the dataset is understood. All materials have been reviewed and categorized.

WHO CAN RECEIVE THIS DATA

Regulators

German data protection authorities can be notified under GDPR. The dataset contains employee personal data and documentation related to public sector construction projects. Regulatory bodies overseeing public procurement and construction standards may have interest in the exposed tender and compliance documentation.

Clients

Project documentation for multiple construction clients is present in the archive. Clients with active or completed projects can be contacted directly with evidence of the exposure. Public sector entities with tender documentation in the dataset can receive proof of the breach.

Competitors

Construction companies operating in the German wood building sector can obtain detailed pricing information, project costing methodologies, and proprietary construction techniques. The production plans and structural calculations reveal technical approaches that competitors can use to undercut bids or replicate methods.

Media

The involvement of public sector projects and public funds creates a story. Construction failures, compliance issues, or procurement irregularities documented in the archive can be investigated. Published data surfaces during due diligence searches for years after initial exposure.

WHAT CAN HAPPEN

Employee personal data can be sent to relevant data protection authorities in Germany

Clients with projects in the dataset can be notified directly with evidence of exposure

Competitors can access detailed pricing structures and undercut future bid submissions

Public sector entities can receive documentation of exposed tender materials

Construction methodologies and proprietary techniques can be replicated by industry competitors

Financial documents can be used to understand project margins and negotiate against the company

The complete archive can be published and indexed, appearing in searches indefinitely

Other threat actors, fraud groups, and competitors can independently use this data for their own purposes — the exposure is permanent