If you're trying to craft attacks you should execute them on a private network and not the public testnets, as people monitor the testnets and will copy your at

If you're trying to craft attacks you should execute them on a private network and not the public testnets, as people monitor the testnets and will copy your attacks if they see you exploiting the corresponding testnet contract of a mainnet dApp. I suppose that means the testnets are already a kind of adversarial environment.