South Korean authorities fine Bithumb $136K over sharing user information overseas

The fine comes after an investigation concluded that Bithumb shared information with many overseas exchanges in violation of laws intended to protect user data.

South Korean cryptocurrency exchange Bithumb was order to pay a $136,000 fine after it was found to have breached personal information protections rules when it sent user data overseas.

In a Thursday notice, the country's Personal Information Protection Commission (PIPC) said that its investigation into Bithumb found that the exchange had “transferred personal information overseas without the separate consent of the data subjects during the process of order book sharing and virtual asset transfer with overseas virtual asset exchanges.”

The incident was connected to Bithumb sharing its Tether (USDT) order books between September and November 2025 with BingX, despite obtaining consent to share the data with Stellar, as well as sharing user information with 13 overseas exchanges.

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