Michael Lewellen
Michael Lewellen is a blockchain security and software architect with over 14 years of experience in web3 systems. As Head of Solutions Engineering at Turnkey, he advises leading financial institutions and protocols on secure key management and infrastructure design. He has worked with major protocols including Arbitrum, Compound, and the EF during his time at OpenZeppelin. He currently teaches blockchain technology at UT Dallas and is a long-time contributor to the Security Alliance.
Sessions
As Web3 moves from niche experiments to institutional-grade infrastructure, our security models are hitting a tipping point. This panel explores how the industry is maturing to meet the demands of mainstream adoption without abandoning decentralization. We’ll look at what’s fundamentally shifting—from the evolution of smart contract security and wallets to the critical rise of operational security (OpSec)—and what remains immutable.
Web3 security has cycled from custodial single points of failure to the "seed phrase anxiety" of self-custody. This session explores how Secure Enclaves (TEEs) can offer a unique solution to key management by enabling Verifiable Infrastructure for embedded wallets.
We’ll dive into Turnkey’s approach to TEE-based key management—using hardware-isolated environments like AWS Nitro to move beyond simple signing into a world where every policy is rooted in verifiable proofs. We'll also discuss Turnkey's new Verifiable Cloud: a new offering that extends these guarantees to general-purpose workloads, allowing developers to run sensitive code—from AI agents to DeFi logic—inside isolated enclaves that produce independently auditable proofs of execution.