The Big Answer is BOTH
there will be no Victim if there are no fraudster , but there will never be a fraudster if there is no victim.
remember that victim is the reason why there are existing fraudster.
so lets not blame one but instead help the victim find a way to not become one.
What?
If someone drop his wallet, it contains a lot money and his identity, what will you do? would you take all the cash and then throwaway the wallet somewhere else? it means you're a bad person.
The victim can't be blamed, if the person didn't want to take the money, the victim will get his wallet and his identity without lose anything... same to Bitcoin.