What exactly was stolen from Bithumb?
DaouOffice compromised. This is an internal work service from Daou Technology. According to Money Today, names, department names and employee contacts were stolen.
- Regulators notified - KISA and PIPC
- Client data being reviewed - the data employees forwarded to each other in correspondence
- Not disclosed - the number of affected people and the method of entry
The exchange's position. Bithumb insists that the corporate perimeter is physically separated from the trading one.
Bithumb: "client virtual assets are not accessible through this hack". No cryptocurrency losses have been recorded.
Why is this not an isolated case?
This is part of a series of attacks on Korea's financial sector. Several major players came under attack at once.
- Daishin Securities. The broker confirmed a data leak affecting 38,490 clients - names, contacts, addresses.
- Mirae Asset Global Investments. The asset manager blocked anomalous access to part of its web systems.
- FSS review. On Wednesday the supervisory authority was inspecting all three companies at once.
The scale is wider. FSS head Lee Chan-jin previously said that as of October 14, cyberattacks had affected 16 financial organizations in the country.
What does Coinbase have to do with it?
Coinbase has a different story. Its own systems were not hacked. The leak occurred at analytics contractor Amplitude.
- Contacts exposed - for a small portion of Coinbase users
- Other companies affected too - those working with the same service
- Affected parties being notified - by email
What next?
No link between the two incidents has been established yet. Bithumb continues its internal review.
For the exchange, this is the second tough year in a row. In February it mistakenly credited users with 620,000 BTC instead of 620,000 won. In June, PIPC fined it 210 million won for transferring client data to foreign companies without consent.
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