German Energy System Supplier Hit by Ransonware Attack

December 26, 2022


On November 10-11, Kisters AG in Germany was hit by a ransomware attack. Kisters AG is a critical infrastructure supplier for energy systems with the potential for downstream compromise. The software provider, which specializes in the energy industry, has shut down the system "to prevent further damage". Their website reports a new IT infrastructure was built. Close to normal operations was resumed by January 12, 2022.

Incident Date

November 21, 2021



Estimated Cost

Ransomware not paid. Operations back online within 2 months.


Type of Malware

No Malware identified

Threat Source

No threat source identified