Author

Gareth Larkan

Researcher at Sigma PrimeSouth Africa

Gareth is a Security Engineer at Sigma Prime. He is passionate about securing the future of web3.

2 posts by Gareth Larkan

A technical breakdown of how digital signatures actually work in blockchain systems, from raw bytes to onchain authorisation.

25 August 2026

An explanation of how MEV affects cross-chain bridge exploits and the incentives driving them.

26 August 2025

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Sigma Prime audits Ethereum protocols, smart contracts, and consensus implementations.