The hack Poly network hacker behind the stealing of over $600 million has promised to return the funds. The hacker said he only took the funds for fun to expose weakness in the network. Poly Network is a decentralized finance network (DeFI) that allows the transfer of funds between different blockchains. Decentralized finance is a blockchain functionality that allows the development and deployment of various financial solutions. These include; Saving services, lending services, and money transfer services. The poly network facilitates movements of funds between various wallets when you transact on the cryptocurrencies. Communication Previously, there have been attacks on blockchain networks. However, this is the biggest attack on a…