How are blockchains running smart contracts and managing many billions being attacked and defended?
On the 31st of March, Matthias Egli showed us the challenges of designing smart contracts, analyzing their vulnerabilities, and get hands-on experience in a real-world scenario. Matthias was the COO of ChainSecurity, an ETH spin-off that has helped secure more than 1 billion USD transiting through smart contracts. After a quick technical introduction on how to interact with a real-world blockchain, Matthias presented the participants with an actual smart contract. He challenged everyone to exploit its re-entrancy vulnerability. What followed was an intensive hands-on session during which everyone tried to multiply their wealth. Following this active part, Matthias went over more intricate attack patterns like flash-loans. The event concluded with a quick Q&A session about real-world applications of blockchains and newly trending topics such as NFTs.