AT&T Data Breach: 9 Million Customers Affected by Marketing Vendor Hack

Data Breach

AT&T has announced that a marketing vendor was hacked in January, causing approximately 9 million wireless accounts to have their Customer Proprietary Network Information (CPNI) exposed.

AT&T has notified its customers of the breach, stating that the information exposed did not contain any sensitive personal information such as social security numbers or passwords. However, customer first names, wireless account numbers, wireless phone numbers, and email addresses were among the data exposed.

Unauthorized access of customers CPNI data

A small percentage of impacted customers also had exposure of rate plan names, past due amounts, monthly payment amounts, various monthly charges, and/or minutes used, but the information was several years old. AT&T has notified federal law enforcement about the unauthorized access of the CPNI data, as required by the Federal Communications Commission.

Customers are advised to toggle off CPNI data sharing on their accounts to reduce exposure risks in the future if AT&T uses it for third-party vendor marketing purposes.

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Source: bleepingcomputer.com

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