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Bithumb admits to ‘serious flaws’ that left
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Bithumb admits to ‘serious flaws’ that left
Bithumb admits to ‘serious flaws’ that left internal systems vulnerable to potential sabotage
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Bithumb admits to ‘serious flaws’ that left internal systems vulnerable to potential sabotage
The South Korean crypto exchange’s CEO Le Jae-won said the lack of proper controls led to the erroneous transfer of bitcoin worth more than $40 billion to customers. Most has been recovered.
By Olivier Acuna|Edited by Stephen Alpher
Feb 11, 2026, 2:13 p.m.
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Bithumb's CEO admitted to internal failures led the erroneous transfer of 620,000. (Photo: Olivier Acuna/Modified by CoinDesk) BTC to custoomers.
What to know:
- Bithumb admitted that serious internal system flaws led it to mistakenly transfer about $40 billion in bitcoin to customers instead of a planned payout of roughly $428.
- The error briefly caused bitcoin prices on Bithumb to plunge 17 percent, prompted a probe by South Korea's Financial Supervisory Service and exposed gaps in the exchange's asset-matching and account-segregation controls.
- While Bithumb has recovered most of the coins, 1,786 bitcoins sold before accounts were frozen remain missing, intensifying lawmakers' concerns about weak oversight in one of the world's busiest crypto markets.
South Korea's Bithum admitted Wednesday that severe flaws left the trading platform’s internal system wide open to potential sabotage and that it failed to prevent the mistaken transfer of $40 billion in bitcoin to customers, according to Reuters.
The blunder, which triggered the price of bitcoin to plunge by 17% on Bithumb, according to Reuters, consisted of the country’s second-largest crypto trading platform accidentally giving away 620,000 bitcoins to customers instead of just 620,000 won (roughly $428).
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The Financial Supervisory Service said Sunday it will start investigations into “high-risk” practices that undermine market order, including large-scale price manipulation by so-called whales, trading schemes tied to suspended deposits and withdrawals and coordinated pump tactics fueled by social media misinformation. The watchdog also said it plans to build tools that automatically extract suspicious trading patterns at the second and minute levels, alongside text-analysis systems using artificial intelligence to flag potential market abuse.
Bithumb CEO Lee Jae-won said the giveaway amounted to 15 times the crypto trading platform’s 42,000 bitcoins, mainly due to a 24-hour lag in processing transactions and delayed updates to its crypto holdings balance. "We are acutely aware of the deficiency in internal system control," Lee told a parliamentary committee hearing recently.
The CEO admitted that Bithum’s policy of ensuring the volume of assets to be transferred matched its actual holdings failed, and that the amount was not earmarked in a separate account to ensure the transfer’s safety.
The exchange has recovered most of the bitcoin, although 1,786 that were sold within minutes before the exchange froze customers' accounts are still missing, the Reuters report added. The customers who sold those missing bitcoin are legally bound to return them.
Members of parliament expressed dismay at the lack of government and corporate oversight in the country's virtual assets market, which is one of the most active in the world by trading volume. According to a recent report, cryptocurrency has become a primary investment asset in South Korea, with investor numbers rising to 10 million and exchanges such as Upbit and Bithumb generating revenues in the trillions of won.
BithumbSouth KoreaBitcoin (Currency)
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