We've all been through this—hurriedly sending a message, copying and pasting, only to accidentally send a message to the boss instead of your wife. The embarrassment lasts all night, and at worst, you'll treat everyone to a meal tomorrow to make up for it.

But this morning, a certain whale on the blockchain wasn't so lucky. A slip of the finger caused 50 million USD to go down the drain.

This isn't some fancy smart contract bug, nor is it a state-sponsored hacking team. The culprit is a common flaw we all share—laziness.

Here's what happened. This guy withdrew 50 million USDT from a top-tier exchange. To be cautious, he first transferred 50 bucks worth of USDT for testing—sounds like a careful person, right?

But the trouble was in the final moment.

The black hand that had been watching him took advantage of his testing phase and precisely created a fake address next to his wallet address. The hacker's address looks exactly like the real one, with only a few digits changed in the middle. It's impossible to tell the difference with the naked eye.

At the critical moment of transferring the 50 million, this guy probably thought the long string of characters was too annoying, so he took a shortcut and clicked "Copy Last Transaction" in the transaction record. He never expected that the string of characters had been secretly altered by the hacker.

He hit Enter.

And just like that, 50 million USDT, like a kite cut loose, flew straight into the hacker’s trap. The hacker responded quickly—immediately swapped to DAI to avoid freezing, then swept the entire 1,600 ETH into a mixer for laundering.

From withdrawal to loss, the whole process was like a carefully choreographed magic show. The only difference is, this time, no one was applauding.