Security News > 2022 > October > Verizon notifies prepaid customers their accounts were breached
Verizon warned an undisclosed number of prepaid customers that attackers gained access to Verizon accounts and used exposed credit card info in SIM swapping attacks.
"Using the last four digits of that credit card, the third party was able to gain access to your Verizon account and may have processed an unauthorized SIM card change on the prepaid line that received the SMS linking to this notice. If a SIM card change occurred, Verizon has reversed it."
Verizon said the threat actors could have accessed names, telephone numbers, billing addresses, price plans, and other service-related information on compromised accounts.
One of the Verizon customers who received this notice told BleepingComputer that they were the victims of a SIM swap attack more than a week before Verizon alerted customers.
Customers are advised to set a new Verizon PIN code to secure their Verizon account from future attacks, as well as a new password and secret question to safeguard their My Verizon online accounts.
Verizon also allows customers to defend against SIM swapping attacks by enabling the free 'Number Lock' protection feature through the My Verizon app or the My Verizon website.