The data of nearly all customers of the telecommunications giant AT&T was downloaded to a third-party platform in a security breach, the company said Friday, as cyberattacks against businesses, schools and health systems continue to spread globally.
The breach, most of which took place over five months in 2022, hit customers of AT&T's cellular customers, customers of mobile virtual network operators using AT&T's wireless network, as well as its landline customers who interacted with those cellular numbers.
Approximately 109 million customer accounts were impacted, according to AT&T, which said...
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