The global secret group ransomware group listed Columbia University Information (Dental) on its data leak site on 2026-08-14. Country: US Sector: Healthcare Domains named: columbia.edu Claim as published on the leak site: Country: New York, US | Website: columbia.edu | Revenue: $6.6 Billion | Industry: Colleges & Universities | Employees: 20.000-25.000 | Properties: 296 GB (283,387 Files, 11,268 Folders)