[South Korean police investigate 26 Polymarket users, 18 referred to prosecution, involving approximately 17.6 billion KRW] According to data submitted by the South Korean National Police Agency to the office of Democratic Party lawmaker Yoon Kun-young, as of September 15, the Cyber Investigation Unit of the Gangwon Provincial Police Agency has launched investigations into 26 Polymarket users, with 18 of them referred to the prosecution. The total betting amount involved is approximately 17.6 billion KRW, with the highest individual betting amount reaching about 5.7 billion KRW. Police believe the trading activities on Polymarket clearly constitute illegal gambling. South Korean authorities utilized open-source intelligence (OSINT) techniques to analyze publicly available blockchain transaction records to identify and track these users. The Korea Communications Standards Commission (KCSC) decided to block Polymarket on August 18.