Core DAO has contained an incident that allowed a small group of validators to claim CORE rewards above the protocol’s intended issuance.An emergency hard fork is being coordinated as a forward upgrade and will not roll back the network or reverse confirmed transactions.Coinbase, Bithumb, Coinone and other exchanges restricted CORE transfers around the time the reward issue was disclosed.Core has not disclosed how much excess CORE was issued or whether any of the additional tokens entered circulation.