The blockchain analysis company Arkham Intelligence recently disclosed a shocking cryptocurrency theft case. In 2020, the well-known Bitcoin Mining Pool LuBian in China suffered an unprecedented hacker attack, resulting in a loss of up to 127,426 Bitcoins, which was approximately $3.5 billion at the time, setting a historical record for cryptocurrency theft cases.

The incident first occurred on December 28, 2020, when LuBian was the sixth largest Bitcoin Mining Pool in the world. The Hacker successfully stole about 90% of LuBian's Bitcoin assets through a series of carefully planned transactions. Fortunately, LuBian discovered it in time and transferred the remaining 11,886 Bitcoins to a secure wallet, avoiding greater losses.

It is worth noting that this major event was not made public at the time, as both the victim and the attacker chose to remain silent. An investigation by Arkham Intelligence revealed that LuBian sent 1,516 embedded OP_RETURN messages to the wallet address controlled by the hacker, costing approximately 1.4 Bitcoins.

The Arkham team analyzed that the private key generation algorithm used by LuBian may have security vulnerabilities, making it susceptible to brute force attacks. This technical flaw is likely to be exploited by hackers, ultimately leading to such large-scale asset losses.

Today, the value of the stolen Bitcoins has surged to approximately $14.5 billion. This astonishing event once again warns crypto asset users to place a high emphasis on security measures. It highlights the importance of properly managing private keys, while also underscoring the necessity of using the most advanced and secure random number generators to create keys.

This incident is not only the largest theft in the history of Crypto Assets but also serves as a wake-up call for the entire industry regarding security. It reminds us that even large-scale, seemingly secure Mining Pools can become targets for Hacker attacks. Therefore, whether individuals or institutions, there is a need to continuously enhance security awareness and take more stringent protective measures to ensure the safety of digital assets.