This Week in Breach March 22nd, 2023

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AT&T

https://www.bleepingcomputer.com/news/security/atandt-alerts-9-million-customers-of-data- breach-after-vendor-hack/

Exploit: Supply Chain Attack

AT&T: Communications Conglomerate

Risk to Business: 1.802 = Severe

AT&T is notifying roughly 9 million customers that some of their information was exposed after a marketing vendor was hacked in January 2023. The company did not name the vendor, and they were quick to reassure customers that financial data and Social Security numbers were not involved. Impacted customers have been informed that some or all of their Customer Proprietary Network Information (CPNI) has been exposed, including customer first names, wireless account numbers, wireless phone numbers and email addresses. The company said that a small percentage of customers also had additional data exposed including their rate plan name, past due amount, monthly payment amount, minutes used and various other monthly charges. AT&T said that the data was several years old but didn't specify a time period.

How It Could Affect Your Business: Supply chain risk is spinning out of control for businesses, and IT professionals need to be ready to mitigate it fast.

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