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Sybil Attack

Last updated Jun 7, 2022 Edit Source

Source: Sybil attack on Wikipedia

Sybil attacks are also called sock puppetry

Creating a large number of pseudonymous identities and uses them to gain a disproportionately large influence (e.g. control of >50% nodes allows you to ‘override’ the consensus)

3E’s of Preventing Sybil Attacks

  1. Entry Cost
  2. Existence Cost
  3. Exit Penalty