Sybil attacks

A single actor forges many fake identities to game a ranking, vote, or reputation system, defeating one-entity-one-signal assumptions.

grounded in: NOTABLE trend item: the viral self-upvoting Show HN demo exposing how easily rankings can be gamed by sockpuppet identities

Connected concepts

Proof of personhood, Bot mitigation & scraping defense, Reward hacking, Adversarial anti-AI content