1. Use a Hardware Wallet: These are physical devices designed to store cryptocurrency private keys. They offer the highest level of security for storing private keys as the device provides an isolated environment which is not connected to the internet and keeps the private key secure from hackers.
2. Use a Software Wallet: These are online wallets that are stored on a secure server, protected with encryption and other security measures. These wallets do have the potential to be exposed to hacking, but the chances of that happening are low if the user takes the necessary steps such as two-factor authentication, a unique password, and other secure methods.
3. Use a Paper Wallet: This is a physical document or printed piece of paper that contains your private keys. This type of wallet is considered to be the most secure as it is completely offline and has no risk of being hacked. However, it is important to remember to keep it in a secure and safe place.