South Korea's Financial Intelligence Unit (FIU) reported 36,684 suspicious transaction reports (STRs) from virtual asset service providers between January and August 2025. This figure surpasses the combined total of 35,734 STRs from the previous two years. The Korea Customs Service also revealed that from 2021 to August 2025, virtual asset-related criminal cases transferred to prosecutors amounted to 9.56 trillion Korean won (approximately 6.8 billion USD), with underground remittance cases making up 90.2% of this total. In a notable incident this year, South Korean authorities uncovered an illegal cross-border remittance case involving USDT, valued at 57.1 billion Korean won (around 40.88 million USD). This highlights the ongoing challenges in regulating and monitoring cryptocurrency transactions in the country.