The LuBian mining pool lost 127,000 BTC in a theft in 2020, but the hacker still controls the assets and has become the world's 13th largest BTC holder.

Mars Finance News, on August 3rd, according to Arkham's disclosure, LuBian, once ranked among the global top ten mining pools, suffered a major security incident in December 2020, with a total of 127,426 BTC stolen, valued at $14.5 billion at current prices, becoming the largest Bitcoin theft in history. Arkham stated that LuBian was a Chinese mining pool with mining sites in China and Iran. In May 2020, it controlled nearly 6% of the Bitcoin network's total hash rate, wielding significant industry influence. The attack occurred on December 28, 2020, with attackers allegedly exploiting vulnerabilities in its private key generation algorithm and successfully stealing over 90% of its holdings through brute force methods. The next day (December 29), hackers transferred some BTC again, amounting to $6 million. Additionally, LuBian attempted to plead with the hackers through on-chain OP_RETURN messages, requesting the return of stolen assets. The official sent 1,516 transactions with messages, consuming 1.4 BTC in total, further confirming the authenticity of the incident. Currently, LuBian still retains 11,886 BTC (approximately $1.35 billion), and the hacker's last on-chain activity was an address consolidation in July 2024. As of the disclosure date, the hacker still controls the stolen BTC, with an unknown identity, and their holdings have ranked as the 13th largest BTC holder globally, even surpassing the Mt.Gox hacker address.