Available starting today, Wireless Account Lock is an option for AT&T subscribers with postpaid or prepaid wireless accounts.

AT&T is launching a new Account Lock feature that’s designed to protect wireless users against SIM swapping attacks. The ...

Describing its Number Lock feature in a new support page spotted by 9to5Google, Google calls it an additional layer of protection against illegal SIM swaps that the company offers to Google Fi ...

How to lock your Social Security number. There are two ways to block access to your Social Security number. Call the Social Security Administration.