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Re:Bitcoin Gold Hit by Double Spend Attack, Exchanges Lose M... by ajross on Wednesday May 23, 2018 @06:32PM (#17139020)
> all you really need to know is the cost to get to 51% and stay there for a given amount of time

That's actually, if anything, underestimating the likelihood of a 51% attack. It seems that the more likely path to that situation is collusion between segments of the existing mining community. For such a cartel, the "cost" is zero, it's just a matter of trust.

Re:Bitcoin Gold Hit by Double Spend Attack, Exchanges Lose M... by Jommi on Wednesday May 23, 2018 @11:13PM (#17140795)
The cost of creating and upholding a cartel is not zero at all. It can actually be quite high.