After numerous user account compromises and security breaches, Sony has finally added 2FA to the its PlayStation Network. It's highly recommended that users take advantage of this extra layer of security for their accounts. You can do this by going to the Playstation Store on the web, and clicking the following: Account Settings>Go to the Account Tab and select Security>Scroll down and click on "For 2-Step Verification, please visit this page". You will then be prompted to turn on 2FA and add a mobile phone number. You can also do this from your PS4 by going to Settings>PSN Account Management>Account Information>Security>2-Step Verification.