AT&T investigates leaked data impacting millions

AT&T, a telecom company, announced on Saturday that it is investigating a data set released on the “dark web” approximately two weeks ago. Preliminary analysis suggests it has affected around 7.6 million current account holders and 65.4 million former account holders. The data appears to be from 2019 or earlier.

AT&T clarified that there’s no evidence of unauthorized access to its systems due to this incident, and it’s uncertain whether the data originated from AT&T or one of its vendors. The company reassured that the incident hasn’t materially impacted its operations, and the source of the data is still under evaluation.

AT&T is reaching out to all affected parties and has reset passcodes for 7.6 million current customers. Additionally, it pledges to provide credit monitoring where applicable. The wireless carrier’s 5G network serves approximately 290 million people across the United States.

In February, AT&T experienced an outage that disrupted calls and text messages for thousands of U.S. users, leading to federal investigations.