It depends on what type of security you are talking about, there are safety precautions where you are going to be mined, where you will store your coins and the type of pool you use to mine.
yeah is save but you will follow the mining process. So first you will follow the mining process. mining is gather more power so i it need to more energy. mining is counit the all networking process. it will helpful to for the future improvement. It need to start the mining you will need to altcoin so you will save it for the mining process.