
FSS sanctions over 44.5B won ($32M) Upbit hack. No specific penalty provisions in current law. Dunamu's share exchange with Naver faces additional regulatory scrutiny.
South Korea's financial regulator has started sanctions proceedings against Dunamu, the company that runs the Upbit exchange, after a 44.5 billion won ($32 million) hack last November.
The Financial Supervisory Service sent an inspection opinion letter to Dunamu, kicking off a process that lets the firm respond before any penalty is set.
The unauthorized access hit Solana-based assets. It started at 4:42 a.m. Korea Standard Time on Nov. 27 and lasted about 54 minutes. Initial damage estimates ran near $36 million. The FSS later settled on 44.5 billion won, roughly $32 million at current rates.
Upbit drew criticism for not disclosing the breach until late that evening, after a scheduled meeting with Naver Financial. The exchange said it moved assets to cold storage and suspended deposits and withdrawals upon detection. It promised to cover customer losses from corporate funds.
In December, Upbit launched an automated tracking system called the Onchain AI Tracer to follow the stolen assets.
South Korea's Virtual Asset User Protection Act has no specific penalty provisions for cyber breaches or system failures. That gap creates uncertainty about the FSS's enforcement range. The regulator will evaluate Dunamu's official response before issuing any preliminary sanction notice. Final measures would need review by the sanctions review committee, the Securities and Futures Commission, and the Financial Services Commission.
Government officials have said they plan to address hacking provisions and compensation rules in the second phase of the Digital Asset Basic Act.
This marks the second regulatory action against Dunamu. The Financial Intelligence Unit previously fined the company 35.2 billion won for anti-money laundering and customer verification shortfalls. Courts later overturned part of that penalty, citing an insufficient legal basis.
Dunamu is also working on a share exchange with Naver Financial. The deal has been pushed back to Dec. 31, pending regulatory approvals. The sanctions proceedings do not automatically block the transaction. They add another layer of regulatory scrutiny.
The FSS has not disclosed a specific sanction amount. Dunamu can contest the inspection conclusions through the remaining review process.
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