PSA: Stop Using SMS / Text for 2 Factor Authentication (2FA) Access Codes Due to SS7 Vulnerability  Many people are becoming aware of enhanced security measures taken by banking, internet, email and other institutions.  Commonly known as “two-factor authentication” or 2FA, the user has a choice of receiving the one time PIN or password by text message or on an app loaded on the phone, known as an authenticator.  Another less common format is a security token tha