Data Breach
AT&T is notifying roughly 9 million customers that some of their information was exposed after a marketing vendor was hacked in January.
“Customer Proprietary Network Information from some wireless accounts was exposed, such as the number of lines on an account or wireless rate plan,” AT&T told BleepingComputer.
“The information did not contain credit card information, Social Security Number, account passwords or other sensitive personal information. We are notifying affected customers.”
Current Mitigation: Customers are advised to toggle off CPNI data sharing on their accounts by making a CPNI Restriction Request to reduce exposure risks in the future if AT&T uses it for third-party vendor marketing purposes.
Source: BleepingCmputers