Bithumb hack may have exposed customer data, Yonhap says

The story so far: South Korea crypto and finance cyberattacks

South Korea's national security office called an emergency meeting over cyberattacks on financial firms and crypto exchanges, assessing damage at Bithumb and Mirae Asset. Bithumb reported unauthorised access leaking employee data. Police have now opened a preliminary probe into hacks at Mirae Asset, Daishin Securities…

1. 28 Oct 202603:45 UTC

   South Korea's national security office calls emergency meeting over Bithumb cyberattacks

   South Korea's presidential national security office will hold an emergency meeting on cyberattacks affecting financial firms and crypto exchanges, assessing damage at Bithumb and Mirae Asset Global Investments. Bithumb reported unauthorised access to internal systems that leaked employee data; Mirae found no sensitive data exposure.

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2. 28 Oct 202605:17 UTC

   Changpeng Zhao urges users to limit shared data after breaches

   Binance founder Changpeng Zhao said four data breaches were reported on 28 Oct, at Coinbase vendor Amplitude, Bithumb, Mirae Asset and Daishin Securities. He advised users to share less information and use a separate email alias for each exchange.

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3. 28 Oct 202605:36 UTC

   Bithumb says hacked internal system is separate from its trading platform

   Bithumb says an internal mobile system used by staff for work and communications was breached by an outside party and some personal information was stolen, with the scope still under investigation, including whether customer data was involved. The exchange, which found the intrusion on 27 Oct and reported it to Korean authorities, says the system runs separately from its trading platform and no crypto asset losses have been reported.

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4. 28 Oct 202606:09 UTC

   South Korean police open preliminary probe into hacks at Mirae Asset, Daishin Securities and Bithumb

   South Korea's National Office of Investigation has opened a pre-indictment probe into newly confirmed cyberattacks at Mirae Asset Global Investments, Daishin Securities and crypto exchange Bithumb. Police are checking further damage and possible links to earlier financial-sector hacks.

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5. 29 Oct 202607:34 UTC

   Bithumb hack may have exposed customer data, Yonhap says

   Yonhap News Agency says an internal system hack at South Korean exchange Bithumb on 27 Oct may have exposed customer personal data, with an unauthorised party gaining abnormal access to its internal mobile groupware system.

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