HARTMANN BAU
dragonforceThis record tracks a ransomware attack claimed by the dragonforce group against HARTMANN BAU. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAPWindow Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.
Attack 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
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.