Enable Google two-step verification
This is the simplest way to get additional security around your Google accounts. It’s simple, easy to use and will stop the bad guys/girls getting in!!
To get started, go to the Security page in settings. Click 2-Step Verification and then the Get Started button to sign in to your Google account and turn on two-step verification.
By default, verification codes are texted to your phone, but you can choose to receive prompts via the Google app instead. It not only saves you from needing to enter the code, but
Google recommends setting up at least one backup option in case you can’t access your phone. You can print out a handful of backup codes that you’ll then store in a safe place. You can also use Google Authenticator app as a backup option or USB security key.