Recently, a major incident occurred: a multi-signature wallet private key of a whale was leaked and hacked. The loss amount is quite astonishing—approximately $27.3 million was directly stolen.

Even more heartbreaking, the hacker has already laundered $12.6 million of it (converted into over 4,100 ETH), and currently still holds about $2 million in liquid assets. But this is not the most dangerous part—the hacker still controls this wallet, which maintains an approximately $25 million ETH leveraged long position on Aave.

What does this mean? Once the hacker decides to close the position or further manipulate it, this huge leveraged position could trigger chain reactions. For DeFi users, this is a strong reminder—security of multi-signature wallets cannot be taken lightly, and private key management and risk monitoring are equally important.