Security Issues in the Korean & Global Financial Sector in August 2026

This August 2026 intelligence summary for the Korean and global financial sector reports high phishing prevalence and multi-stage malware campaigns (phishing → downloader/dropper → backdoor → infostealer), widespread account and database leak activity on Telegram and dark-web forums (including large claimed breaches), active ransomware/extortion groups listing financial victims, and the sale of millions of credit-card records — highlighting significant and ongoing risk to financial organizations and customers.