Hackers Claim to Have Data of 70 Million AT&T Customers


A hacking group claims to be in the possession of a database containing private information on roughly 70 million AT&T customers, but the telecoms company says its systems have not been breached.

Going by the name of ShinyHunters, the hacking group was involved in a series of high-profile incidents last year, including some involving Microsoft, Mashable, Minted, Tokopedia, and others.

The threat actor has listed the AT&T database on underground forums, asking for as much as $1 million for the entire set, or $200,000 for access, according to RestorePrivacy, a website focused on raising awareness on privacy and security issues.

Data in the set includes names, addresses, birth dates, phone numbers, Social Security Numbers, and email addresses, RestorePrivacy says.

The hackers told RestorePrivacy that the data pertains to AT&T customers in the United States, but did not reveal how they arrived in its possession.

ShinyHunters, which claims to have three encrypted strings of data, including one that is likely the user PIN, also said they would be willing to work with AT&T to remove the data from the dark web, for a fee.

Contacted by SecurityWeek, AT&T denied being breached.

“Based on our investigation Thursday, the information that appeared in an internet chat room does not appear to have come from our systems,” the company said.

The report comes shortly after U.S. wireless carrier T-Mobile confirmed that it fell victim to a data breach that impacted roughly 54 million of its customers. Some of that data has already emerged on the Dark Web, and the wireless carrier has been sued over the incident.

Related: Hacker Group Advertises Data From Multiple Fresh Breaches

Related: Microsoft Investigating GitHub Account Hacking Claims

Related: Volkswagen America Discloses Data Breach Impacting 3.3 Million

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Ionut Arghire is an international correspondent for SecurityWeek.

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