AT&T is apologizing for an incident in which one of its workers improperly accessed account information for a limited number of customers.
"We take our customers' privacy very seriously and value the trust they have in us," AT&T spokesman Mark Siegel said in a statement to Re/code. "Unfortunately we recently learned that one of our employees did not follow our strict privacy rules and inappropriately obtained personal information for a limited number of customers."
Siegel said AT&T is directly contacting affected customers. The company is in contact with law enforcement and said any unauthorized charges will be reversed.
In a sample letter posted to the Vermont Attorney General's website, AT&T said the personal information included Social Security numbers and other account data.
"On behalf of AT&T, please accept my sincere apology for this incident," AT&T's Michael Chiaramonte said in the letter. "Simply put, this is not the way we conduct business and, as a result, this individual no longer works for AT&T."
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AT&T is offering one year of credit monitoring to affected customers, according to the letter.
The breach was earlier reported by Threatpost.
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