Are Proof of Stake Systems More Vulnerable to Sybil Attacks than Proof of Work Systems?

Proof of Stake (PoS) systems are not necessarily more vulnerable to Sybil attacks than Proof of Work (PoW) systems. Both systems have mechanisms in place to resist such attacks.

In PoW, influence is tied to computational power. In PoS, influence is tied to the amount of cryptocurrency a user holds.

In both cases, it is expensive for an attacker to gain a significant amount of influence. However, the specific design of a PoS system can affect its vulnerability to Sybil attacks.