Is attack of 51% just a concept or a real threat?

10 000 question challengeCategory: Core Blockchain DevelopmentIs attack of 51% just a concept or a real threat?
cryptonoob Staff asked 4 weeks ago

1 Answers
tokenh6_wp Staff answered 4 weeks ago

A situation of 51% attack (when computing power of transactions’ approval are centralized by connected group of miners) has been longly considered as a concept that could never be realized. However, Ghosh.io accounted for more than 42% of power during several days in January. If this rate reaches 51% one day, you better stop using this cryptocurrency as the controller might change the full history of transactions.
https://www.coindesk.com/bitcoin-miners-ditch-ghash-io-pool-51-attack/

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