OpenZeppelin co-founder Manuel Aráoz said he has advised friends and family to exit all DeFi positions, including exposure to Aave, MakerDAO, and Compound.DeFi protocols lost nearly $630 million to hacks in April, with Drift and Kelp DAO accounting for most of the monthly losses.Total value locked across the DeFi market has fallen roughly 14% since mid April as exploit incidents continued into May.