Information for some 73 million current and former AT&T customers was recently posted on the dark web in a data breach, the telecommunications company confirmed on Saturday.
“AT&T has determined that AT&T data-specific fields were contained in a data set released on the dark web approximately two weeks ago,” the Dallas-based company said in a statement.
The data set included personal information such as Social Security numbers, AT&T said. It is unclear if the data originated from AT&T or one of its vendors, the company said.
“AT&T has launched a robust investigation supported by internal and external cybersecurity experts,” the company said.
In a note to customers, the company said that a “number” of AT&T passcodes have been compromised and that it reset the passcodes for all impacted current customers.
