Sybil Attack
A sybil attack targets a network of peer-to-peer nodes by flooding the network with nodes which are all controlled by the same entity.
A sybil attack targets a network of peer-to-peer nodes by flooding the network with nodes which are all controlled by the same entity. These malicious nodes attempt to form a dominant majority of the network and convince honest nodes of dishonest facts. For example, a vendor on eBay may flood their competition with negative reviews to trick customers.
Bitcoin is not a majority-rule system. Instead, Bitcoin is run by Nakamoto consensus, wherein every node runs exactly the code and ruleset they wish to run.
Those who run the code form a network, while those who do not are excluded. Critically, the method for determining the valid state of the blockchain is objective, and does not rely on the opinions of other nodes. Thus, a sybil attack on Bitcoin is far more difficult to execute because controlling a simple or even supermajority of nodes will not allow an attacker to alter the ruleset used by honest nodes.
Sybil Attack is a cybersecurity threat or attack vector that can target Bitcoin users, exchanges, and digital infrastructure. Onramp's glossary explains Sybil Attack and other security concepts to help investors protect their Bitcoin holdings from malicious actors.
Frequently Asked Questions
What is Sybil Attack?
Sybil Attack is a type of cyberattack or security vulnerability that can compromise digital assets. Understanding Sybil Attack is essential for anyone holding or transacting in Bitcoin.
How can Bitcoin holders protect against Sybil Attack?
Protection against Sybil Attack involves using trusted custody solutions, enabling multi-factor authentication, and following security best practices. Institutional custody significantly reduces exposure to such attacks.
How does Onramp protect against Sybil Attack?
Onramp's multi-institution custody model through BitGo, CoinCover, and Tetra Trust provides institutional-grade protection against threats like Sybil Attack. Onramp manages approximately $250M in assets with comprehensive security measures.
