Giovanni Di Siena

Active in DeFi from late 2019, building Solidity smart contract systems with a foundational focus on security. During my time as an LSR at Cyfrin (3 years), I worked with clients to secure critical infrastructure and other high impact EVM smart contract systems across both DeFi and TradFi. This includes projects such as BENQI, Bunni v2, Circle, Dolomite, Strata, Wormhole, and ZKsync.

While a portion of my work remains private, the large majority of reports have been published publicly and showcase my ability to consistently find high-impact vulnerabilities across a number of different categories. This is further supported by technical research topics such as Uniswap V4 Hooks on which I have become a specialist, leading a number of Uniswap Foundation Security Fund subsidized audits.

In addition to novel AMM designs, I am particularly interested in RWAs such as structured yield products and other tokenized capital markets protocols, especially when paired with privacy-preserving solutions. I also have experience supporting clients with incident response and post-incident analysis. In collaboration with one of my teammates, I worked to disclose a live critical exploit which put the entire 7 figure TVL of the affected protocol at risk.

In future, I wish to expand my expertise to cover other languages and ecosystems in the same depth as I have Solidity/EVM. Having previously studied physics at university, I am inherently very mathematically minded and would enjoy diving deeper into the realms of ZK cryptography and AI-assisted bounty hunting.