Shutter Network is an open-source project that aims to prevent front-running and malicious MEV (Miner Extractable Value) on Ethereum through the use of threshold encryption. It provides a decentralized and efficient solution that allows users to send encrypted transactions, protecting them from front-runners in the dark forest. The network relies on a group of special nodes called keypers, who generate encryption keys using a distributed key generation protocol, ensuring the security and integrity of the system.