Spam attacks cost money, how much money do these people have?

[franky1]

Yeah since there is block reward, why pools should care about tx fees, that makes some sense and with this logic every pool should mine empty blocks, why waste time on tx fees And then there is the hypothetical question, what would happen when all the bitcoins have been mined and no block rewards? Its all messed up

not messed up.. the hypothetical question about when block reward is zero.. is a 100 year problem, not something anyone cares about today

[ss890]

I don't think they need money to crack something or make hack on the netowk. It's just piece of algorithm which can be broken with the knowledge of programming, codes and all the logical stuff in the brain.

They are doing it for money, if they are doing it then they have just a laptop, internet connection and command prompt. That's what it cost to them in the first place.