# Attackathon | Fuel Network audit contest Immunefi · Modular execution layer · 17th June 2024 · #27 A public audit contest on Immunefi (modular execution layer), completed on 17th June 2024. 0xSimao placed #27. His findings from it are not published individually. ## What Attackathon | Fuel Network is Fuel is a modular execution layer for Ethereum: a UTXO-based virtual machine (the FuelVM) with parallel transaction execution, native asset support and its own Sway language and toolchain. ## Scope The Fuel network implementation: fuel-core, the FuelVM and the on-chain surface of the Sway toolchain. ## The contest [View the contest page](https://immunefi.com/audit-competition/fuel-network-attackathon)