Reasons for and against Pos vs. PoW
Quite contrary to PoS, PoW is very hard or almost impossible to compromise. Not so for PoS, where more attack vectors can be found.
PoW is not a guarantee or silver bullet to protect a blokchain from attacks. Many Proof of Work networks were attacked and you have Ethereum Classic with many times in its history.
Ethereum Classic hits by third 51% attack within a month in 2021Other altcoin blockchains and their networks are less secured than Bitcoin and more vulnerable to attacks.
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