Hi. My son is receiving authorization codes from Verizon. No member on our account is trying to do anything at all especially anything that could generate this. They are totally not initiated on our end. Example of texts received: "Verizon msg: Your authorization code is (6 digits). For the security of your account, Verizon will never contact you for this code." How can I stop this? These appear to be legitimate.? Thanks for your help.