In the latest cybersecurity news, HARTMANN BAU — a company operating in the DE — has fallen victim to a ransomware attack conducted by the group dragonforce. This data breach, discovered on 2026-03-18 19:05:39.555938, underscores the increasing need for proactive cybersecurity defenses as we continue through 2025.
In response to increasing cyber threats, it’s critical to protect your organization with proactive security measures. HookPhish provides enterprise-grade solutions designed to reduce your risk of future attacks:
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Incident Report
| Attribute | Information |
|---|---|
| Target Organization | HARTMANN BAU |
| Threat Group | dragonforce |
| Summary | Hartmann Bau GmbH is a construction company based in Borgentreich near Kassel, specializing in residential, commercial, agricultural, and civil engineering projects in the Paderborn, Höxter, and Kassel areas. With over 80 years of experience, the company emphasizes quality, timely completion, and customer satisfaction as the foundation for successful construction projects. They offer a comprehensive range of services from planning to key handover, ensuring adherence to high standards and legal requirements. Their team is equipped to handle diverse projects, including offices, housing, barns, and warehouses, tailored to clients’ specific needs |
| Date of Breach | 2026-03-18 17:56:20.512541 |
| Discovery Date | 2026-03-18 19:05:39.555938 |
| Region | DE |
| Target Domain | hartmann-bau.ch |
| Business Sector | Construction |
Don’t wait for a breach to take action — stay informed and take control of your cybersecurity posture today.
You can also check if your organization’s data has been exposed using our free Data Breach Checker.
Disclaimer: HookPhish does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information. All breach data reported here is sourced from publicly available threat intelligence feeds for awareness purposes only.


