What Are Some Examples of Sybil Attacks in the Context of Cryptocurrencies?

In the context of cryptocurrencies, a Sybil attack could be used to disrupt the network in several ways. An attacker could create a large number of fake nodes to try to isolate a user from the rest of the network and feed them false information.

A Sybil attack could also be used to try to influence the outcome of a governance vote in a decentralized autonomous organization (DAO). However, as mentioned earlier, Proof of Work and Proof of Stake mechanisms are designed to make such attacks very difficult and expensive to carry out.