Details Revealed About the Largest Bitcoin Theft From a Mining Pool

In 2020, LuBian controlled nearly 6% of Bitcoin’s network hashrate. On December 28, attackers withdrew over 90% of the BTC from the pool’s wallets. Then, on December 29, an additional $6 million in BTC and USDT was stolen through an address on the Bitcoin Omni network.

Following the breach, LuBian transferred the remaining funds to backup wallets. The company attempted to contact the hackers via the blockchain’s OP_RETURN function, sending messages requesting the return of the stolen assets. According to experts from Arkham, this effort consumed 1.4 BTC and involved 1,516 transactions.

They believe LuBian used a vulnerable private key generation algorithm, which enabled the attackers to access the pool. The stolen funds remain untouched to this day.

Thanks to the surge in Bitcoin’s price, the value of the cryptocurrency held in the compromised wallet is now estimated at $14.5 billion, making the wallet’s owner the 13th largest BTC holder in the world, Arkham specialists concluded.

Previously, blockchain security experts from PeckShield reported that in July 2025, hackers stole $142 million across 17 attacks — a 27% increase compared to $111 million in June.

See also: "Tether Earned a Record $4.9 Billion in Q2 2025"

#Bitcoin (BTC) #USDT

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