Ethereum-based yield-bearing protocol Seneca has seen 80% of its stolen funds returned by a malicious actor. Hacker retained 20% bounty fee.
Full story: https://cryptonews.com/news/seneca-hacker-returns-5-3m-amid-legal-threats-keeps-1m-bounty.htm
Full story: https://cryptonews.com/news/seneca-hacker-returns-5-3m-amid-legal-threats-keeps-1m-bounty.htm