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‘Experimental’ Early-Morning Attack Temporarily Diverts 0.8% of Ethereum Nodes

An attacker fraudulently added hundreds of blocks to the Ethereum chain with invalid proof-of-work, but only a small percentage of nodes were affected.

By Andrew Thurman

Updated May 11, 2023, 5:10 p.m. Published Sep 14, 2021, 3:27 p.m.

Graphics processing units (GPUs) used to mine the Ethereum and Zilliqa cryptocurrencies at the Evobits crypto farm in Cluj-Napoca, Romania, on Wednesday, Jan. 22, 2020. The world’s second-most-valuable cryptocurrency, Ethereum, rallied 75% this year, outpacing its larger rival Bitcoin. Photographer: Akos Stiller/Bloomberg