AT&T Launches Account Lock to Combat SIM Swapping

AT&T has introduced a new Account Lock feature to protect wireless users from SIM swapping attacks. Enabled through the myAT&T app, it prevents unauthorized changes like phone number transfers, SIM card replacements, and billing updates. SIM swapping, a growing threat, involves attackers obtaining a victim's phone number (often via social engineering) to intercept messages and calls, including two-factor authentication codes. This follows similar features already offered by T-Mobile, Verizon, and Google Fi. AT&T's Account Lock also blocks device upgrades and changes to authorized users and phone numbers.