If you want to additionally protect your user access, you can do this by two-factor authentication. Two-factor authentication is a program you can install on your smart phone. It generates a code which you need to enter in addition to your password when you log in.
You can activate this additional security measure via <Profile> | <Data access> | < Two-factor authentication>. Follow the instructions to conclude the process. You have two possibilities to use two-factor authentication: either by the means of an authentication app or by a security token.
Two-factor authentication by the means of an authentication app
There are several authentication apps by different producers, such as "FreeOTP" by Red Hat or "Authenticator" by Google, Microsoft or Sophos.
Two-factor authentication by the means of a security token
Pre-requisite for this method is a "One-Time Password" (OTP) generator. This hardware helps you to generate one-time passwords.