Telecom powerhouse AT&T revealed on Saturday that a leaked data set, surfacing on the “dark web” approximately two weeks ago, has affected roughly 7.6 million existing account holders and a staggering 65.4 million former ones, according to the company’s initial scrutiny of the incident.
“The data set appears to be from 2019 or earlier,” the company disclosed in a statement, stressing that there is currently no evidence indicating unauthorized access to its systems stemming from the breach.
While AT&T is yet to determine the origin of the leaked data—whether it originated from within the company or one of its vendors—it assured that the incident hasn’t materially disrupted its operations, although investigations into the data’s source are ongoing.
In response, AT&T has proactively engaged with all impacted parties, implementing passcode resets for 7.6 million current customers and offering credit monitoring services where applicable.
Despite this breach, AT&T’s expansive 5G network continues to cover approximately 290 million individuals across the United States.
This disclosure follows a February outage that disrupted calls and text messages for thousands of U.S. users, prompting federal investigations into the matter.