Bithumb data leak after internal system breach
Current overview (not historical)
Bithumb disclosed a data leak following an internal system breach. Initial reports stated the internal work system was separated from the trading platform, preventing customer asset access. Newer reports confirm an outsider breached an employee's mobile system and stole personal information, but reiterate that the compromised system was separate from the trading platform and no cryptocurrency funds were reported lost.
Written with AI from the reporting · updated 10/28/2026
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- 1Unclassified fact stationOct 28, 00:00recorded Oct 28, 10:52revised
Bithumb discloses data leak after internal system breach
Read original source ↗ CointelegraphReplay this moment in the explorerEvidence & revisions · 3 source records
- Subject：
- Bithumb
- Action：
- discloses data leak
- Object：
- member data
- Occurred (fact side)：
- Oct 28, 00:00
- Published (valid side)：
- Oct 28, 10:18
- First seen (known side)：
- Oct 28, 10:52
- Published (valid side)：
- Oct 28, 13:10
- First seen (known side)：
- Oct 28, 13:34
- Published (valid side)：
- Oct 28, 18:57
- First seen (known side)：
- Oct 28, 18:58
Fact stationRevisedCopy may have been revised later; time replay is bounded. Layer labels group reading only, not causation between layers.
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- DecryptSource report revisedBithumb confirms data breach, personal information leaked
Report first recorded Oct 28, 18:58
South Korean crypto exchange Bithumb confirmed that an outside party accessed its internal mobile groupware system, leaking personal information. The exchange is investigating whether customer data was compromised. On the same day, brokerage Daishin Securities and asset manager Mirae Asset Global Investments also reported data breaches. Industry sources and Yonhap News Agency reported that some personal information had been leaked.
Read original source ↗ - CoinDeskSource report revisedBithumb employee system breached in latest South Korean cyberattack
Report first recorded Oct 28, 13:34
Bithumb confirmed that an outsider breached an internal employee mobile system, stealing personal information. The exchange stated the compromised system is separate from its trading platform, so customer virtual assets were not accessed. This incident occurs amid a wave of cyberattacks on South Korean financial firms, following Bithumb's $40 billion Bitcoin credit error in February.
Read original source ↗ - CointelegraphSource report revisedBithumb investigates data leak after internal mobile system breach
Report first recorded Oct 28, 10:52
South Korea's crypto exchange Bithumb discovered a breach of its internal mobile communication system on Tuesday and notified regulators. The exchange stated that customer virtual assets remain secure as the internal system is separate from the trading platform, while investigating the scope of potential member data exposure.
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Event activity trend
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- Comparable peak
- 26Oct 28, 19:00
- 24h change
- -81%
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