What Is a “Sybil Attack” and How Can It Target Decentralized Oracles?

A Sybil attack is when a single entity creates and operates numerous fake identities or nodes within a network. In a decentralized oracle network, the attacker could use these many nodes to feed the same false data to the smart contract.

Since the contract aggregates data from multiple sources, a successful Sybil attack could corrupt the consensus, leading to the execution of the contract based on manipulated prices.