# Ethereum Researcher Flags Sybil Weakness in a Leading Censorship-Resistance Design

A new analysis on the Ethereum research forum argues that attackers creating many fake identities could undermine AUCIL, one of two competing inclusion-list schemes meant to keep transactions from being censored.

- Published: 2026-07-12T05:29:56.328Z
- Canonical: https://polylog.news/crypto/2026-07-12/ethereum-researcher-flags-sybil-weakness-in-a-leading-censor
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Ethereum Research](https://ethresear.ch/t/sybil-attacks-on-aucil/25447)

A post on the Ethereum research forum examines Sybil attacks on AUCIL, a proposed inclusion-list design intended to preserve censorship resistance on Ethereum. Inclusion lists are a mechanism to force block builders to include eligible tran…

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