DALLAS — AT&amp;T said it has begun notifying millions of customers about the theft of personal data recently discovered online.

The telecommunications giant said Saturday that a dataset found on the “dark web” contains information such as Social Security numbers for about 7.6 million current AT&amp;T account holders and 65.4 million former account holders.

DALLAS — AT&T said it has begun notifying millions of customers about the theft of personal data recently discovered online.{ai:summary}<p>AT&T notified customers of massive data theft from dark web, affecting millions of current and former account holders. #technology</p>

AT&T notifies users of data breach and resets millions of passcodes

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