Crypto-currencies are designed to be resistant to attack, and blockchain technology is often seen as a way to deploy public ledgers securely, but are there ways to co-opt Bitcoin and blockchains?  There are a few ways that might be feasible, and Bitcoin proponents would do well to study these thought experiments from a know-your-enemy standpoint.

https://www.technologyreview.com/s/610809/lets-destroy-bitcoin/

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