# ConnextHandler can store the hash of the failed messages instead Low/Info · Three Sigma · Lending aggregator · 6th May, 2023 Finding 3S-FUJI-N05 of the Fuji Finance security review. - Report: /reports/fuji-finance - Source: https://cdn.sanity.io/files/qoqld077/staging/32181a28eac3175d15fb8924d249bb0d91ca350c.pdf --- ### Description Storing the failed message itself is very expensive. ### Recommendation Store the hash and then when calling executeFailedWithUpdatedArgs(...) send the txn as an argument and match it against the stored hash. ### Status Acknowledged with the following statement: The optimization identified is acknowledged by the Fuji team. During Q3 the team will be working on optimizations that will improve the router contracts. --- Related findings: - [Adapters could store the index instead of true in the `VaultV2` to remove the O(n) search](https://0xsimao.com/findings/morpho-vault-v2-adapters-store-index-search): Morpho Vault V2