What is Multi-Factor Authentication (MFA)?
MFA provides an extra layer of security by only letting you access an account after you provide at least one additional piece of evidence, as well as your username and password. A common form of MFA is when you’re sent a code to your mobile phone which you then enter to continue logging in.
MFA makes your accounts much harder to break into than if you were only using a password. Even if a criminal does obtain your password, they will still have to get past at least one additional barrier to access your account.