# Superfluid: Case Study 3 reviews · 3 reports · 19 findings > “0xSimao was our Lead Senior Watson for Superfluid Locker System audit competition. He quickly demonstrated a total understanding of the protocol, its goal and mechanics. Regarding performance, we were glad to have him contribute to our audit. All of the final 3 High and 3 Medium severity issues raised during the audit were discovered by 0xSimao. Communication was crystal clear, questions were pertinent. It was a really pleasant experience to collaborate with him during the Sherlock contest. Finally, 0xSimao’s reactivity and advice were very appreciated during the fix review process. He allowed us to successfully strengthen our protocol security with confidence. We most definitely recommend working with 0xSimao to protocols and teams expecting professionalism.” **What it is.** Superfluid streams tokens continuously rather than in transfers, and the locker contracts hold a user’s stream and their staked position while it runs. **What was reviewed.** Three reviews: two competitions on the locker system, first place in both, and a private review of the protocol monorepo with Sherlock in January 2026. ## What was found 19 findings across the 3 reviews, 5 of them high severity. ## Featured finding A locker turns a user’s ETH into a Uniswap position, and part of what they send is meant to buy the protocol’s token on the way in, which is the buy pressure its economics rely on. Only the ETH sent in that same call was counted for the buying, while the locker’s whole balance went into the position, so sending the ETH a moment earlier skipped it. [See the whole finding](https://0xsimao.com/findings/superfluid-locker-system-ii-pumponomics-skipped-fluid-provide) ## Engagement history | Date | Kind | With | Findings | Report | |---|---|---|---|---| | 2026-01-13 | Private review | Sherlock | [7](https://0xsimao.com/findings#superfluid-2026-01-13) | [report](https://github.com/0xsimao/audits/blob/main/Sherlock/private-audits/2026-01-13-superfluid.pdf) | | 2025-06-04 | Competition · #1 | Sherlock | [6](https://0xsimao.com/findings#superfluid-locker-system-ii-2025-06-04) | [report](https://github.com/0xsimao/audits/blob/main/Sherlock/contests/2025-06-04-superfluid-locker-system-ii.md) | | 2024-11-20 | Competition · #1 | Sherlock | [6](https://0xsimao.com/findings#superfluid-locker-system-2024-11-20) | [report](https://github.com/0xsimao/audits/blob/main/Sherlock/contests/2024-11-20-superfluid-locker-system.md) |