The University of SydneyPage 41Sybil attackA Sybil attackis an attack where a malicious user forges identitiesIt is named after the subject of the book Sybil, a case study of a woman diagnosed with dissociative identity disorder.Some solutions[CL02] are prone to Sybil attacks where an adversary generates fake faulty nodes to have f ≥ n/3 ⇒consensus impossible.