시빌 공격 (Sybil Attack)
다중 신분 위조 공격.
Named after the book 'Sybil' (about a woman with multiple personalities), this attack happens when someone creates thousands of fake accounts to cheat in voting systems, skew reputation scores, or manipulate airdrops. Decentralized networks defend against this using mechanisms like Proof of Work, Proof of Stake, or Proof of Humanity.
graph LR
Center["시빌 공격 (Sybil Attack)"]:::main
Pre_network_security["network-security"]:::pre --> Center
click Pre_network_security "/terms/network-security"
Pre_consensus_mechanisms["consensus-mechanisms"]:::pre --> Center
click Pre_consensus_mechanisms "/terms/consensus-mechanisms"
Rel_51_percent_attack["51-percent-attack"]:::related -.-> Center
click Rel_51_percent_attack "/terms/51-percent-attack"
Rel_dao_governance["dao-governance"]:::related -.-> Center
click Rel_dao_governance "/terms/dao-governance"
Rel_byzantine_fault_tolerance["byzantine-fault-tolerance"]:::related -.-> Center
click Rel_byzantine_fault_tolerance "/terms/byzantine-fault-tolerance"
classDef main fill:#7c3aed,stroke:#8b5cf6,stroke-width:2px,color:white,font-weight:bold,rx:5,ry:5;
classDef pre fill:#0f172a,stroke:#3b82f6,color:#94a3b8,rx:5,ry:5;
classDef child fill:#0f172a,stroke:#10b981,color:#94a3b8,rx:5,ry:5;
classDef related fill:#0f172a,stroke:#8b5cf6,stroke-dasharray: 5 5,color:#94a3b8,rx:5,ry:5;
linkStyle default stroke:#4b5563,stroke-width:2px;
🧒 5살도 이해할 수 있게 설명
한 사람이 가짜 아이디를 100개 만들어서, 마치 100명이 찬성하는 것처럼 투표를 조작하는 것입니다.
🤓 Expert Deep Dive
Crucial for peer-to-peer systems. Defense strategies include: 1. Resource-based (PoW/PoS), 2. Social-based (Vouching/Trust Networks), 3. Biometric (Iris scans), and 4. Fee-based (Making identity creation expensive).