Flow Blockchain has announced an 'Isolation Recovery' plan in response to a $3.9 million hack. The plan includes a blockchain upgrade, currently in testing, with 'Phase One Deployment' aimed at restoring network operations and blocking attacker addresses. The initial rollback plan was abandoned due to slow consensus and resistance from key partners. The new strategy seeks to minimize disruption to legitimate users. Following the hack, FLOW's price dropped over 40% to $0.10.