Recent reports indicate that hackers can somehow spoof or copy SIM card data from iPhones. This is then used to access bank accounts associated with the SIM card (phone). A suggested solution is to use a Third Party Authenticator, such as Google Authenticator.
I use Google Authenticator for a few of my other accounts, including MyPay and some stock broker accounts. It is pretty easy. I presume that USAA employees monitor this subreddit. So I am posting this in the hope that someone there decides to check into it.