October 2025 Security Issues in Korean and Global Financial Sector

This report summarizes multiple high-impact financial-sector incidents: a massive customer data breach claimed by a threat actor (sample posted) from a major Indian life insurer, ransomware attacks and data-leak extortion by The Gentlemen against a Singaporean financial IT provider (raising supply-chain risk), and broader analysis of malware, phishing, and dark-web trafficking of financial data including provided MD5 hashes as indicators.