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South Korea’s largest cryptocurrency exchange, Upbit, is currently under scrutiny by regulators following a significant hack that led to the unauthorized withdrawal of approximately $36.9 million in assets on the Solana (SOL) network. The breach impacted over 20 different tokens and has prompted Upbit to freeze assets on its platform while an investigation unfolds.
Lazarus Group Tied To Upbit Hack
Authorities are now investigating the possibility of North Korean involvement in the cyber attack. Reports suggest that a group affiliated with North Korea’s intelligence agency, the notorious Lazarus Group, may have orchestrated the hack, which Upbit has described as an “abnormal withdrawal.”
This group has been consistently linked to several high-profile crypto heists in recent years, and the US Federal Bureau of Investigation (FBI) has identified North Korean cyber operations as one of the most sophisticated and persistent threats.
The recent attack coincidentally occurred just days before the sixth anniversary of a previous major breach, in which Upbit lost 342,000 Ethereum (ETH) to North Korean hackers.
According to an unnamed government official, this latest hack bears similarities to a 2019 incident in which approximately 58 billion won in cryptocurrencies was stolen, also attributed to the Lazarus Group.
In response to the attack, the South Korean National Police Agency has launched an investigation into the matter, although officials have not provided further comments on the case. Upbit’s operator, Dunamu, confirmed that an in-depth investigation into the cause and extent of the asset outflow is currently underway.
Crypto Exchange Moves Funds To Cold Storage
The cryptocurrency exchange’s CEO Oh Kyung-seok stated that as soon as abnormal withdrawal activity was detected, Upbit promptly suspended all deposit and withdrawal services.
“We are conducting a comprehensive inspection, prioritizing the protection of member assets,” he said in a notice to users. Following the discovery of the unauthorized transactions, Upbit has taken steps to freeze the affected funds wherever possible.
To prevent any further unauthorized transfers, the exchange has shifted all remaining assets to cold storage, ensuring “a secure environment for funds.”
Upbit is also said to be working with relevant project teams to freeze assets on-chain, having already blocked a portion of the stolen funds related to the cryptocurrency Solayer (LAYER). The exchange has indicated that deposits and withdrawals will only resume once full security checks are completed.
Dunamu has vowed to reimburse customers for any losses with business funds as part of its commitment to its users. It remains to be seen what additional information the country’s authorities will release in the coming days, as well as potential refund deadlines for affected individuals.
Featured image from DALL-E, chart from TradingView.com
