...t dApps on Ethereum today share the same fatal flaw: they rely on a broken and unprotected transaction system. Whether it’s NFT drops, token launches, Web3 games, or betting platforms, unprotected dApps are getting hijacked by bots, insiders, and high-rollers.
;
// trigger the exploit and buy the item
exploiter.buy(level);
// assert that we have solved the challenge
assertEq(level.isSold(), true);
vm.stopPrank();
}
```
你可以打开[Shop.t.sol](https://github.com/StErMi/fou...