Cyberattack Affects All Locations of German VDM Steel

June 28, 2023


Unknown perpetrators carried out a cyberattack on VDM Metals. All locations are affected, including those in Werdohl (administration, wire and strip production), Altena (plate and rod production), Unna (melting plant, forge and rod finishing shop) and Siegen (plate rolling mill). Significant parts of the company's IT infrastructure are affected. Production came to a standstill and parts of the workforce sent home.

Two weeks later production is gradually restarting. The problem seemed to lie in the logistics data flow. VDM communicates most parts of the business will be up and running again by next week.

Several hundred computers have been exchanged in the company. The plant uses server resources from the Spanish parent company Acerinox, as can be seen from the new e-mail addresses of the employees.

Incident Date

January 9, 2023



Estimated Cost



Type of Malware

No Malware identified

Threat Source

No threat source identified