Especially nodes running versions between 0.15 and 16.2 need to upgrade as soon as possible. A bug could be exploited to create an invalid block that gets nonetheless validated by these older versions. This makes a chainsplit a theoretical possibility.
A full resync with the latest software (0.16.3) showed that the bug has not yet been exploited. It probably won't happen as it isn't in the interest of the ecosystem, nor is it easy to excecute. But that's no excuse. Upgrade asap!
More info in the sticky: https://www.reddit.com/r/Bitcoin/comments/9hkoo6/new_info_escalates_importance_upgrading_to_0163/
There is only one Bitcoin and that is BTC. Bitcoin is the most secure and decentralized cryptocurrency, it’s the perfect store of value and with Lightning Network you can make micro payments too. Do the world really need Bitcoin Cash? I think the Bitcoin Cash project will fail. I am not rude ( calling it Bcash ) I’m just realistic. Have a nice day people. This is all my own opinion.
A Bitcoin Cash (BCH) upgrade that will both increase block size from 8MB to 32MB and add or reactivate Bitcoin script operation codes (Op codes) …
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