# Biconomy audit contest Code4rena · Smart accounts · 4th January 2023 · #56 A public audit contest on Code4rena (smart accounts), completed on 4th January 2023. 0xSimao placed #56. 1 of his findings is published: 1 high severity. ## What Biconomy is Biconomy Smart Account is a smart contract wallet building on the core concepts of Gnosis and Argent safes, with an interface for calls from the ERC-4337 account-abstraction EntryPoint: a single-owner wallet whose deployment address is counterfactual, the same across chains, and whose modules extend what the account can authorise. ## Scope The Smart Account implementation and factory, its EntryPoint integration, the module system and the paymasters. ## High severity findings - [Attacker can gain control of counterfactual wallet](https://0xsimao.com/findings/biconomy-gain-control-counterfactual-wallet) ## The contest [View the contest page](https://code4rena.com/audits/2023-01-biconomy-smart-contract-wallet-contest)