# IOP | ThunderNFT audit contest Immunefi · NFT marketplace on Fuel · 12th August 2024 · #4 A public audit contest on Immunefi (NFT marketplace on Fuel), completed on 12th August 2024. 0xSimao placed #4. His findings from it are not published individually. ## What IOP | ThunderNFT is Thunder is an NFT marketplace on Fuel: listings, offers and auctions settle through Sway contracts against the FuelVM's UTXO model. ## Scope The Thunder marketplace Sway contracts: listings, offers, auctions and the asset managers around them. ## The contest [View the contest page](https://immunefi.com/audit-competition/thundernft-iop)