Slow Fog Cosine: The longer the mnemonic phrase/Private Key is used and shared by more people, the easier it is to leak and difficult to trace.

[Slow Fog's Yu Xian: The longer the mnemonic phrase/private key is used online and shared with more people, the more likely it is to be leaked and the harder it is to trace.] Yu Xian, the founder of Slow Fog, stated that a user's four sets of mnemonic phrases were leaked, and the funds in the four corresponding wallet addresses were stolen. From the on-chain operation methods, after the hacker's address received the funds, they were all converted to ETH and then laundered through FixedFloat. A reminder for everyone: The longer mnemonic phrases/private keys are used online and distributed to more people for shared use, the more likely they are to be leaked, and the harder it is to trace the reasons for the leak.