# Opencover audit contest Sherlock · Insurance · 19th January 2026 · #1 A public audit contest on Sherlock (insurance), completed on 19th January 2026. 0xSimao placed #1. His findings from it are not published individually. ## What Opencover is OpenCover is a specialist DeFi risk transfer provider, enabling individuals, businesses and institutions to protect themselves against technical and economic risk on-chain. OpenCover Insured Vaults is a new on-chain primitive that enables insured and covered yield for virtually any DeFi vault without changes to the underlying protocol or deposit flow. Insured Vaults solve the hardest problems in on-chain insurance including premium streaming, DeFi native composability and variable length policies. ## Scope The Sherlock contest covered the vault contracts, 3 files and 614 nSLOC: the insured-vault wrapper over the underlying ERC-4626 vault, premium streaming over variable-length policies, and the cover accounting between depositor and underwriter. ## The contest [View the contest page](https://audits.sherlock.xyz/contests/1222)