Ostra

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Ostra
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Ostra is a suggest system for countering sybil attacks.

<math>N * | L | + S</math>

N: number of links, |L| lower bound, S: received spam.

[edit] Paper

  1. Ostra: leveraging trust to thwart unwanted communication

[edit] See also

  1. Alan Mislove
  2. Hawala (Indian social network for money transfer)
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