FSI's JSAC 2025 talk explains how South Korean financial-sector defenders turn high-volume CTI into usable detection and hunting workflows. The speaker describes DPRK state-sponsored activity as a daily concern for Korean financial institutions and uses the Pyramid of Pain to show the gap between fast IOC sharing and slower TTP analysis. The talk argues for tighter feedback between CTI producers and consumers so financial companies can act on indicators, detection rules, and hunting leads before deeper analysis is complete.