$612 million was stolen from Poly Network, which allows users to swap tokens across blockchains. All but $238 million worth of Tether has reportedly been transferred back to Poly Network. Poly Network offered hacker a $500,000 bug bounty to return the stolen assets, which was reportedly refused. The company says it will return funds to original holders once it receives the final key to the jointly held account. The hacker says he planned a “blitzkrieg” on various networks but had no plans to launder the assets.”]
Source: https://www.govinfosecurity.com/poly-network-hacker-reportedly-returns-most-stolen-funds-a-17290