Zellic

4.8/5 Founded 2020 Team: 50+ $$$

About

Zellic is a security firm founded in 2020 by members of the top-ranked perfect blue CTF team, known for aggressive, exploit-oriented review across smart contracts, bridges, and ZK circuits. Its ZK practice covers circom, halo2, and zkVM codebases, and the firm was among the auditors engaged for Scroll's zkEVM circuits ahead of mainnet. Zellic publishes many of its reports in a public GitHub repository and writes detailed technical postmortems of vulnerabilities its team finds.

Specialties

zk circuits smart contracts bridges halo2 circom exploit development

Supported Chains

circom halo2 zkvm evm generic

Notable Audits

Scroll zkEVM (pre-mainnet circuit audits) LayerZero

Turnaround

2-6 weeks

Team Size

50+

Public Reports

Yes

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Last validated
Jul 2026