The qilin ransomware group listed Subsurfco LLC on its data leak site on 2025-03-21. Country: US Sector: Manufacturing Domains named: subsurfco.com Claim as published on the leak site: Subsurfco LLC is a company that operates in the Civil Engineering Construction industry. The company is headquartered in South Sioux City, Nebraska. Brad Smith is the president of this Company. Our team managed to breach and encrypt Sub ...