DeFi protocol Rhea Finance announced that it had lost a total of $18.4 million in assets due to a hack. This is more than double the previously known amount of $7.6 million. The hacker exploited a vulnerability in the slippage protection mechanism to steal $18.4 million from the protocol's reserve pool, resulting in actual losses, including user asset damage. Rhea Finance plans to use the protocol's reserves and team operating funds for recovery and support measures.