Dunamu CEO Lee Sirgoo has issued an apology following a security breach at Upbit, acknowledging internal security shortcomings. The breach affected approximately 44.5 billion KRW in assets, including 38.6 billion KRW in user funds, 2.3 billion KRW frozen, and a 5.9 billion KRW company loss. Despite the incident, Lee assured that users will not incur any losses.