An old brother shared a painful experience: Last year, he suspected that his Private Key might have been leaked, and wanted to verify whether his Wallet Address had been hacked. As a result, in a moment of impulse, he transferred 500 Bitcoins to that Address to do a "test."

So what happened? The hacker was indeed waiting inside and turned around to steal 490.

This is outrageous. I originally wanted to confirm something, but instead, I ended up delivering a big gift to the hacker. It's like that joke says: seeing something on the road, thinking to myself, "Could this be poop?" I took a bite to confirm, "It really is poop," and then I was relieved that I "fortunately didn’t step in it."

This serves as a lesson for everyone: once the Private Key is leaked, don't try to use real money to verify. Once assets are transferred, hackers can immediately transfer them out, leaving no time for reaction. If you suspect that your Private Key has been leaked, the correct approach is to directly transfer your assets to a new Wallet, rather than risking large amounts of funds to test.