>"Ethereum Classic has suffered a 4,000-block long reorganization, its second such incident in five days. The first attack, which saw more than 3,000 blocks reorged, saw an attacker steal more than 800,000 ETC, worth about $5.6 million."

[https://www.google.com/amp/s/www.coindesk.com/ethereum-classic-suffers-second-51-attack-in-a-week%3famp=1](https://www.google.com/amp/s/www.coindesk.com/ethereum-classic-suffers-second-51-attack-in-a-week%3famp=1) >"Ethereum Classic has suffered a 4,000-block long reorganization, its second such incident in five days. The first attack, which saw more than 3,000 blocks reorged, saw an attacker steal more than 800,000 ETC, worth about $5.6 million."

Mining pool Ethermine’s parent entity Bitfly and crypto exchange Binance reported the reorganization, announcing all Ethereum Classic payouts, withdrawals and deposits had been suspended due to the attack. The reorganized transaction history is currently the longest chain on the network. However, the majority of Ethereum Classic miners – such as mining pool Ethermine – are continuing to mine on the shorter version of the network. Developers behind Ethereum Classic said in a tweet minutes before Bitfly’s report that exchanges and mining pools are advised to “significantly raise confirmation times on all deposits and incoming transactions” in light of “recent network attacks.” A chain reorg occurs when a party gains more hashing power than the rest of the network miners. The adversary can then rewrite the chain’s history and “double-spend” the blockchain’s native currency (in this case, ETC). Hashing power on Ethereum Classic looks to have decreased considerably since Monday, August 3 dropping nearly 20% from 1.6 TH/s to 1.3 TH/s as of press time.