If you use PoS or DPoS to mine your scamcoin then you will not need to spend any resources to mine. If you are not spending any resources to mine then it would not cost any resources to attack the network. If it does not cost anything to attack the network then the network is not secure. If the network is not secure then people will have no reason to own or accept the coin for payment, and thus the coin would have no value
Typical bitcointard thinking process.
Please show me how you attack NXT or BTSX without spending 1$.
All you would need to do to attack a PoS coin is buy up a lot of the shitcoin, transfer them to a lot of different wallets housed is various VPS that all have different IP addresses. You then attack the network, transfer the shitcoin back to an exchange, sell the shitcoin before anyone notices