Data of Millions of AT&T Customers Exposed

by Mindy Cohn

In an email that went out to nine million wireless subscribers, AT&T announced a data breach that took place in January. 

Although the target was not AT&T itself but an AT&T marketing vendor, the data breach still caused the exposure of phone numbers, full names, and email addresses, as well as data points like plans, monthly charges, and minutes used.

AT&T didn't identify the vendor but said one of the vendor's security vulnerabilities, which has since been patched, was exploited. 

 AT&T claims that more sensitive information, such as payment methods and social security numbers, was not exposed. 

Those affected would have received an email notification. No action is being advised at this time.