Exposed - Seventy Million AT&T Customers Personal Data

About 73 million current and former AT&T customers personal data has been leaked online the company has  confirmed  Information including addresses, social security numbers and passcodes has been published on the Dark Web, the US telecoms giant said.

AT&T said it had not identified evidence indicating the data had been stolen, but they have brought in cyber security experts to investigate. The company said it had reset customers' passcodes. - they were urged by the company to "remain vigilant by monitoring account activity and credit reports".

The data involved in the breach appears to be from 2019 or earlier and is linked to 7.6 million customers and 65.4 million former account holders. It also includes information such as full names, email addresses and dates of birth, though AT&T said financial information had not appeared in the leak.

The company said in a statement that it was unclear whether the data had originated from its own systems or via a third-party supplier. “It has come to our attention that a number of AT&T passcodes have been compromised. We are reaching out to all 7.6m impacted customers and have reset their passcodes. In addition, we will be communicating with current and former account holders with compromised sensitive personal information."

“Our internal teams are working with external cyber security experts to analyse the situation. To the best of our knowledge, the compromised data appears to be from 2019 or earlier and does not contain personal financial information or call history,” says AT&T’s statement.

AT&T's wireless 5G network covers around 290 million people across the US and the company is one of the country's largest mobile and internet services providers.

This is not the first time the company has been hacked in February, a there was a significant outage that hit tens of thousands of phone users in the US, which prompted an apology from the firm and an offer of $5 credit for those affected. Prosecutors in New York launched an investigation into that episode, which left people unable to use their phones for around 12 hours.

AT&T is not the only US telecommunications provider with a history of compromised customer data. A 2023 data breach affected 37 million T-Mobile customers and in February this year there was a major unexplained outage  across the entire US mobile network.

AT&T   |     BBC     |  ABC    |  Al Jazeera    |     NPR    |     Yahoo    |     Quartz  

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