DDOS vulnerability
Over the last 24 hours, the cryptocurrency community has been discussing
a critical vulnerability that was found in the Bitcoin Core (BTC) reference client. A bug introduced in Bitcoin Core version 0.14, that also affects all subsequent versions, could have caused a great majority of current Core nodes to crash. According to the developer’s Optech newsletter, Core contributors released a patch that fixes Core version 0.16.2 and the latest 0.16.3 fix requires an immediate upgrade.
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Looks like it did not have much of an impact on BTC price