CoinMeta data: Blockchain investigator Zachxbt stated that through an undercover operation costing $349,700, he exposed a Chinese money laundering network linked to North Korea. This network transferred over $1 billion in funds for hackers associated with North Korea and helped track the funds from the $1.5 billion theft case committed by Bybit in 2025. Zachxbt mentioned in a tweet on October 5th that he discovered more than 15 accounts seeking assistance related to transactions with Bybit hackers in public Telegram and Discord groups, and infiltrated the network as a client. By contacting an operator using the alias “Jimmy Green”, he obtained detailed information about the flow of funds related to Bybit across multiple networks. Zachxbt also stated that Tether later froze 442,000 USDT related to this network. According to Chainalysis's data, the total amount of cryptocurrency stolen by North Korean hackers in 2025 amounted to $2.02 billion.