The aurora ransomware group listed Sumitomo Electric Bordnetze on its data leak site on 2026-06-16. Country: DE Sector: Manufacturing Claim as published on the leak site: [electric] *** SE (SEBN) — a Wolfsburg-headquartered subsidiary of Sumitomo Electric Industries (TSE:5802, ~$31B group revenue), employing approximately 40,000 people across 14 countries. Exfiltrated 1.1 terabytes of data from five manufacturing sites. SEBN Moldova (103 GB) — HR, payroll, personal tax records, competition-council litigation files, home directories SEBN Ukraine (115 GB) — HR/salary, Audi B9 project data, process documentation, including displaced-worker records for Ukrainian IDPs SEBN Tunisia — Fejja (191 GB + 493 GB shared) — passport copies, email archives (671 MB PST), quality/FMEA data, finance SEBN Slovakia (268 GB) — the crown jewel: Citibank corporate banking infrastructure including the TESTKEY authentication system, IBAN registries, daily bank statements, SAP salary-payment files, and years of department email archives The dataset contains 173,000 Excel files, 149,000 PDFs, 2,500 CAD engineering drawings, 2,500 Outlook messages, 1,500 FMEA/PPAP quality files, and 9 Outlook PST archives.