The sinobi ransomware group listed JB Brown & Sons on its data leak site on 2025-10-08. Country: US Sector: Professional Services Domains named: jbbrown.com Claim as published on the leak site: J.B. Brown Sons is a commercial property management and development company based in Portland, Maine, with over 200 years of experience in real estate. The company specializes in owning, leasing, and managing a variety of commercial properties, including office, warehouse, manufacturing, retail, and mixed-use buildings. Aimed at long-term stable growth, J.B. Brown Sons offers responsive services to assist tenants with their commercial space needs. Their portfolio of properties and development projects reflects their deep-rooted presence in the Greater Portland area.