The sinobi ransomware group listed Power Curbers on its data leak site on 2025-12-16. Country: US Sector: Manufacturing Domains named: www.powercurbers.com Claim as published on the leak site: Established in 1953 in Salisbury, NC, Power Curbers manufactured the worlds first automatic curb machine. The original machines, extruders used in forming small curbs, are still manufactured as the Power Curber 150 extruder.