Lending Contract Exploits: A Retrospective

**Executive Summary:** CertiK’s analysis of DeFi lending incidents in 2023 highlights several high‑impact exploits—most notably the ~$200M Euler exploit and other losses such as Platypus (~$9M) and Rodeo (~479 ETH)—rooted in missing solvency checks, oracle manipulation, recursive flash‑loan strategies, and stacked external dependencies; the report emphasizes strengthening validation, oracle robustness, and continuous on‑chain monitoring to mitigate similar attacks.