On-chain data shows that the hacker group that recently attacked the Upbit exchange has begun transferring the stolen assets. According to tracking by monitoring platforms, approximately 1,400 ETH have been moved from the hacker's wallet to a mixing service address. This abnormal transfer activity indicates that the attackers are attempting to obscure the source of the funds through mixing services. The incident is still under ongoing monitoring, and the exchange along with on-chain security teams are increasing their surveillance efforts.