What would happen if someone actually hacked Satoshi Nakamoto's wallet? This is quite an interesting question. Speaking of which, we need to talk about those fund-draining robots (drainers). Logically, these mechanisms have one goal — automatically transferring wallet assets. But over the years, what’s strange is that they haven't touched Satoshi Nakamoto’s millions of bitcoins. That’s odd. Is it due to technical limitations, or is there a flaw in these mechanisms themselves? Either way, it shows one thing — even on an open and transparent blockchain, the security of large assets still has many unsolved mysteries. It’s worth for on-chain security researchers to ponder carefully.