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As of now my understanding is that with POW an attack by one or multiple goverments could be orchestrated just by raiding mining farms (which can be easily identified given the electricity bill) and confiscate mining equipment + taking down pool servers and terrorism trough media ....that imho is more than enough to permanently compromise bitcoin (no need for a 51% attack)

How will Casper mitigate those risks? Will the IP of the validators be public? How will the problem of DDos be handled?

Off the bat the only clear advantage I can foresee is that if a validator is censored/taken offline ethers would be automatically redistributed to other validators (hopefully) around the world in various different jurisdictions opposed to the mining equipment being confiscated , that being said Casper would still be vulnerable to a scenario where cohercitive force and terrorism trough media is being used by governments to discourage other holders/stakers to step in and become validators themselves , in such scenario even with the use of dedicated servers to run validators the real life identity of the holder would be compromised , not to mention the loss of ethers and the legal troubles for the the hosting company .... Finally this brings in the most important question : What would happen if nobody is willing to stake?

closed as primarily opinion-based by soc1c Apr 13 '16 at 11:08

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

  • Validators can't be located therfore force is useless. Big improvement on POW. – user544 Apr 13 '16 at 0:36
  • Hi and welcome to Ethereum Stack Exchange. Unfortunately, there are multiple issues with this question. On the one hand it will lead to speculative, subjective and primarily opnion-based answers which is not desired on stack exchange and on the other hand it's asking multiple questions and high-quality answers would be too long trying to reply to this thread. Please refer to the help-center with some really good hints on how to ask. – soc1c Apr 13 '16 at 11:12