The security of digital currency is an issue that every investor needs to pay attention to. To protect our digital assets, we need to take some basic security measures. First, using a hardware wallet can provide an extra layer of security to prevent hacking attacks. Second, two-factor authentication is another important security measure that ensures that even if the password is leaked, the assets will not be stolen. In addition, we should avoid conducting transactions on public networks to reduce the risk of being attacked. Through these measures, we can greatly enhance the security of digital currency.