~hackernoon | Bookmarks (4)

In the presentation below, Clément Lesaege, co-founder of Kleros, presented on the attack costs of different oracle networks and how to calculate the potential profit from corrupting them. Below is a glossary of key concepts mentioned during Clement’s talk, intended as a supplement to his video presentation.

Yaron Velner, founder of B Protocol, presented on how to leverage on-chain risk feeds to build trust in DeFi platforms. B Protocol has been building open-source protocols and infrastructure for risk mitigation and assessment for the DeFi ecosystem since 2020. B. Protocol’s risk oracle provides objective risk-related information about different assets, protocols, or platforms.

Oracle hacks occur when attackers exploit vulnerabilities in the design or implementation of oracle networks. In such a hack, the attacker usually manipulates the oracle to feed incorrect data into a blockchain contract. This often leads to funds being erroneously transferred, typically to the hacker’s account. The core of these attacks lies in compromising the data integrity that smart contracts rely on.

In the presentation below, Mario Cao, Head of Research at SEDA Protocol, presented on the design, goals and architectural overview of their multi-chain native oracle. SEDA aggregates data from off-chain sources and other blockchains, utilizing an innovative overlay network and relayers for efficient distribution.