The metaencryptor ransomware group listed Proterial America, Ltd. on its data leak site on 2026-11-07. Country: US Sector: Manufacturing Domains named: us.proterial.com Claim as published on the leak site: Proterial, Ltd., headquartered in Tokyo, Japan, with consolidated revenue totaled about 881 billion yen ($8.3 billion) in fiscal 2019 (ended March 31, 2020), is one of the major member companies of the Proterial Group. Proterial America manufactures and markets a diverse portfolio of high-grade metal products and materials, magnetic materials and applications, high-grade functional components and equipment, wires, cables and related products. Data size: —