Police have launched an internal investigation into the Upbit virtual asset exchange following a hacking incident that resulted in approximately 44.5 billion KRW in losses. The Cyber ​​Terrorism Investigation Team of the National Investigation Headquarters is leading the pre-investigation. Currently, authorities are conducting an on-site investigation at the headquarters of Dunamu, the operator of Upbit. The focus is understanding the security vulnerabilities that led to the breach and assessing the exchange's security protocols. The Upbit hacking incident occurred in the early hours of the day, resulting in a significant outflow of virtual assets. The investigation will likely examine Upbit's cold wallet storage procedures, multi-signature security measures, and overall cybersecurity infrastructure. Investigators will also be tracing the movement of the stolen assets to identify the hackers involved and attempt to recover the funds. The results of this investigation could have significant implications for the regulatory landscape of cryptocurrency exchanges in South Korea. ```