Are PoS networks really more expensive to attack than PoW?

Is it more expensive to attack a Proof-of-Stake (PoS) network compared to a Proof-of-Work (PoW) one? BitMEX’s latest report digs into this debate, challenging the idea that PoS systems are harder to compromise. The key here is comparing the cost of renting versus buying the necessary resources for an attack. Renting vs. buying: The cost

Source: Cryptopolitan