A $3.5 billion Bitcoin heist, the largest ever recorded, has been retroactively uncovered by blockchain analytics firm Arkham Intelligence. The theft occurred from the Chinese mining pool LuBian on December 28, 2020, where approximately 127,426 Bitcoin were stolen, constituting 90% of the pool's holdings at the time. This significant hack went unreported for years by both the mining pool and the hacker. Arkham's investigation revealed that LuBian may have used a vulnerable algorithm for generating private keys, making it susceptible to brute-force attacks. Although LuBian managed to secure the remaining 11,886 Bitcoins, the implications of such a high-profile hack underscore the importance of robust security measures in cryptocurrency transactions. Currently, the stolen Bitcoin is valued at approximately $14.5 billion. This incident emphasizes the need for cryptocurrency users to prioritize proactive safety and stringent private key management practices.

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