Hackfest 2023 - Back to the Future

Web 3.0 smart contracts, like the ones found on Ethereum, bring promises of speed, decentralization, and security. Although DeFi's model may seem complex, these projects still can be vulnerable to relatively simple attacks like domain takeovers. In this beginner-friendly talk, we discuss how I discovered dangling DNS on several decentralized crypto exchanges and my experiences trying to responsibly disclose vulnerabilities to them.