The blackbyte ransomware group listed Crown Grinding & Machining on its data leak site on 2023-04-09. Sector: Manufacturing Domains named: crowngrinding.com Claim as published on the leak site: Crown Grinding and Machining has been providing quality material and service since 1999. Our modern facility and experienced operators are capable of meeting your custom steel needs. We specialize in surface grinding and milling as well as steel supply.