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Coinbase has ceased interactions with the Ethereum Classic (ETC) blockchain after the exchange detected a 51 percent attack on the network. Following the discovery of a ādeep chain reorganizationā of the ETC blockchain, Coinbase suspended Ethereum Classic withdrawals and deposits.
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Coinbase Stops Interacting With ETC Blockchain After Deep Chain Reorganization
Coinbase has published a blog post titled āEthereum Classic ETC is Currently Being 51% Attackedā detailing a malicious attack on the ETC network.
Coinbase chose not to publicly post analysis pertaining to the attack earlier in order to avoid creating a āfalse alarmā that could have created premature or unnecessary market instability. The company also notes that traders who attempted to send or receive ETC using Coinbaseās platforms were unable to complete said transactions as a result of the response.
Coinbase Yet to Re-Enable ETC Transactions
Since the incident, Coinbase claims to have detected ā12 additional reorganizations that included double spends,ā totaling 219,500 ETC valued at approximately $1.1 million.
The exchange notes that āa full blockchain analysis is beyond the scopeā of its blog post, adding that further examination into āthe addresses sending the double spend transactions, the history of sends/receives from the addresses, the block fields such as timestamp, and the subsequent movement of miner rewards from attack blocks may shed light on the threat actor or actors behind these attacks.ā
Coinbase is currently assessing the āsafetyā of re-enabling ETC transactions and will communicate with customers regarding updates to the exchangeās support for Ethereum Classic.
What is your response to the recently increased prevalence of 51 percent attacks targeting altcoins? Post your thoughts in the comments section below!
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