I know each people when participate in this market all have own ways to protect your portfolio! So, I want to sum up all ways I am doing and maybe it will be helpful for newbies an just for reference purposes. Here are some ways:

• Use a hardware wallet: A hardware wallet is a physical device that stores your private keys offline, making it harder for hackers to access your cryptocurrency.
  
  Keep your private keys safe: Your private keys are the keys to your cryptocurrency, so make sure to keep them in a secure location, such as a safe or safety deposit box.
  
  Use two-factor authentication: Two-factor authentication adds an extra layer of security to your account by requiring a code in addition to your password to access your account.
  
  Keep your software up to date: Make sure to keep your cryptocurrency software and wallets up to date to ensure that you have the latest security features.
  
  Use strong passwords: Use long and complex passwords for your cryptocurrency accounts, and don't reuse the same password across multiple accounts.
  
  Don't share your personal information: Don't share your personal information, such as your email address or phone number, on social media or with anyone you don't trust.
  
  Don't trust unsolicited messages: Don't trust unsolicited messages or emails asking for your private keys or other sensitive information.
  
  Diversify your portfolio: Diversify your cryptocurrency portfolio across different assets and exchanges to minimize risk.

[/b]
Remember, cryptocurrency is a relatively new and evolving industry, so it's important to stay informed and up to date with the latest security measures to protect your portfolio.