https://www.knightli.com/en/tags/blockchain/ Recent content in Blockchain on KnightLi Blog Hugo -- gohugo.io en Tue, 05 Jul 2022 00:00:00 +0000 https://www.knightli.com/en/2022/07/05/sybil-attack/ Tue, 05 Jul 2022 00:00:00 +0000 https://www.knightli.com/en/2022/07/05/sybil-attack/ <h2 id="origin-of-the-term">Origin of the term </h2><p>The name comes from the case/story &ldquo;Sybil&rdquo;, associated with multiple identities.</p> <h2 id="what-is-a-sybil-attack">What is a Sybil attack </h2><p>An attacker creates many fake nodes/accounts to gain disproportionate influence in distributed systems.</p> <p>Common impact areas:</p> <ul> <li>P2P networks</li> <li>social platforms</li> <li>blockchain consensus and voting</li> </ul> <h2 id="mitigations">Mitigations </h2><ul> <li>Proof of Work (resource-cost barrier)</li> <li>Proof of Stake / stake-based identity weight</li> <li>identity and reputation systems</li> <li>economic and protocol-level anti-spam controls</li> </ul>