Bitcoin Cash underwent a hard fork to upgrade network security and add a few key features, as reported by BTCManger on 15 May, 2019. The hard fork went as per plan but a bug on Bitcoin ABC’s client rendered the chain non-functional for a few hours. Bitcoin ABC, one of the top clients to run a node on the Bitcoin Cash network, ran into trouble as an attacker found a bug that could compromise the network – as a functional inefficiency, not a security flaw. The attacker, who waited till the upgrade to test the vulnerability, flooded the network with nearly 3000 transactions, each containing a staggering 133 inputs each. ... (full story)