AT&T investigating dark web data leak affecting 73 million customers

March 30 (UPI) -- AT&T said Saturday it is investigating a security breach after data from nearly 8 million current and 65 million former customers was leaked on the dark web.

The company said in a statement the data was posted to the dark web two weeks ago and is from sometime around 2019. The information includes personal information such as social security numbers.

It hasn't yet determined whether the compromised data originated from AT&T or one of its vendors, the company said, adding it has launched "a robust investigation supported by internal and external cybersecurity experts."

The data set affects approximately 7.6 million current customers and about 65.4 million former customers.

The company said it hasn't yet found evidence of unauthorized access on its systems, and it so far has not affected operations.

AT&T said and it is communicating with affected customers and reset their passcodes. It also is offering free credit monitoring through Equifax, Experian and TransUnion.