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Bithumb Reports Data Leak After Hack of Internal Work System

South Korean exchange Bithumb is probing a data leak from a hack of its staff messaging system, and says customer crypto assets are out of reach.

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what happened

South Korean crypto exchange Bithumb is working out how much data was exposed after hackers breached its internal mobile system, which staff use to message each other. Cointelegraph, citing Yonhap News Agency, reported on Wednesday that the exchange found the intrusion on Tuesday and alerted two bodies the same day: the Korea Internet & Security Agency and the PIPC, the privacy watchdog. Bithumb has not yet confirmed whether member data was taken.

The exchange said its workplace network is separated from the platform that handles virtual asset trading, so customer crypto holdings cannot be reached through this breach. It promised an official statement soon.

why it matters

For markets this is mainly a cyber-risk signal for South Korea's financial sector rather than a direct driver of asset prices. The regulator said 16 financial firms had been hit by cyberattacks as of Oct. 14. Daishin Securities reported a leak of personal and credit data for 38,490 customers, while Mirae Asset Global Investments blocked abnormal external access to some web systems.

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sources

  1. Bithumb discloses data leak after internal system breach: Report — Cointelegraph, 28 October 2026 at 02:18 UTC

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