A total of $632M was stolen across 20+ DeFi protocols in April, with the largest losses occurring at KelpDAO ($293M) and Drift ($285M). Other impacted assets and platforms include Rhea Lend, Grinex, Wasabi Protocol, Sweat Protocol, ZetaChain, and USDT pairs on BSC and LML. The sentiment regarding DeFi yields is increasingly bearish, as expected returns are currently low or effectively negative due to these security exploits.