Ethereum Classic’s 51 Percent Attack Highlights the Challenges of Proof-of-Work Coins

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On Jan. 5th, Ethereum Classic (ETC) suffered a 51% attack losing a total of more than US$1 million spread over 15 different transactions. The scale of this attack can offer some lessons to the challenges faced by blockchains secured by Proof of Work (PoW). This is not the first majority attack that has occurred. In…