The aurora ransomware group listed Estrategias BigMat S.L.U. on its data leak site on 2026-10-14. Country: ES Sector: Retail & E-Commerce Claim as published on the leak site: [distribution] Estrategias BigMat S.L.U. — the Spanish master franchisee of BigMat International, a French cooperative and one of Europe's largest building materials distribution networks. 624 SEPA payroll XML files (2022–2025) — every monthly salary payment for 300–500 employees across 15+ entities, with full names, DNI/NIE numbers, IBANs, and exact euro amounts. 20 SILTRA Social Security databases — the complete filing history for every subsidiary's workforce, containing números de afiliación