Reorg attacks

ethereum classic
Ethereum Classic Suffers Second 51% Attack in a Week
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, had an atta...
ethereum classic

ethereum classic
Security Firm Asks Exchanges to Help It Find Ethereum Classic 'Attacker'
Security firm SlowMist has come out with a public analysis of the latest chain attacks seen on ethereum classic.
ethereum classic

Ethereum classic (CoinDesk archives)
Coinbase Suspends Ethereum Classic After Blockchain History Rewrites
Ethereum classic's blockchain has been hit by a suspected 51 percent attack, leading to reorganizations of its transaction history.
Ethereum classic (CoinDesk archives)