Brügger Architekten AG

Brügger Architekten AG was compromised in a ransomware attack attributed to killsec3 in October 2025. The organization, operating in an undisclosed sector in Unknown, was added to the group's data leak site as part of an extortion campaign.

killsec3 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.

Brügger Architekten AG, specializes in designing and executing architectural projects ranging from small-scale renovations to large urban transformations. Based in Thun, Switzerland, the company serves both public and institutional clients, delivering tailored solutions that emphasize sustainability, resource efficiency, and site-specific design. Key offerings include residential developments, such as the eco-friendly Dufourstrasse replacement building in Thun featuring seven modern city apartments with solar power and heat pump systems, and the Reka Feriendorf at Lenk, a family-oriented holiday village with 68 accessible apartments set to begin construction in March 2025. Brügger Architekten is recognized for its innovative use of materials, light, and space, blending functionality with architectural distinction.