KUPER

KUPER was compromised in a ransomware attack attributed to THEGENTLEMEN in May 2026. The organization, operating in an undisclosed sector in Germany, was added to the group's data leak site as part of an extortion campaign.

THEGENTLEMEN operates as a financially motivated ransomware-as-a-service (RaaS) operation, exfiltrating sensitive data and threatening public disclosure to pressure victims into paying ransom demands.

kuper.de Heinrich KUPER GmbH is an internationally active medium-sized company headquartered in Rietberg, Germany, with approximately 120–190 employees. The company specializes in developing and manufacturing machines and systems for veneer processing, solid wood working, automated packaging technology, and special-purpose woodworking equipment. As a quality leader in veneer and wood processing technology, KUPER serves customers worldwide with individualized solutions and comprehensive service support.