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Re:A hacker stole $31M of Ether – how it happened, and what ... by slededit on Friday July 21, 2017 @06:22PM (#14824151)
The clients could be rewritten to accept the "invalid" block. That would cause a fork between the modified and unmodified clients. Like fiat currency, the only thing maintaining the definition of a legal block is the software the majority of the network choose to run.
Re:A hacker stole $31M of Ether – how it happened, and what ... by Dagger2 on Friday July 21, 2017 @11:06PM (#14825171)
They could indeed, but which users and companies would switch to that forked chain knowing that it's worthless? Having a lot of hashing power doesn't let you control the software that other people are running.