MIM utilizes the Token Vesting Program developed by Bonfida. It is an on-chain vesting program that MIM has used to lock up funds for the next 9 years. You can find the code here and its audit here.
We regard user security as a priority and try to do our utmost to make it a safe experience to use MIM and the Solana Blockchain. We encourage users to create specific wallets for rewards, educate our users and help them solve problems related to wallets, the MIM token and the MIM swarm.