Coinbase.com, a mainstream cryptocurrency exchange, disclosed an abnormal 12 double spend in the. Ethereum Classic, which prompted them to halt the transaction of ETC. These 15 reorganizations in aggregate cost around $1.1 million worth of. ETC transactions. Experts in cryptocurrency, like Mati Greenspan, eToros Sr. Market Analyst is trying to normalize the issue stating that being a minor cryptocurrency, the ETC double spend issue is an isolated case which cannot be easily duplicated with a major cryptocurrency like Bitcoins.”]
Source: https://hackercombat.com/coinbase-suspended-ethereum-classic-etc-after-attacks-worth-1-1-million/