“ On a blockchain, there is a constant risk of a 51% attack which means It is a situation when a miner or group of them gets more than 50% of the networkÂ’s mining hash rate control. While in control, an ill-natured group can reverse the transaction that is completed, pause the transaction in process, double spend coins, prevent new transactions from getting validation and much more. Nevertheless, this attack is only a risk to recently hard-forked networks and new blockchains.”
What does this part mean?
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