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Telecom giant AT&T announced Saturday that it has reset passcodes for 7.6 million customers after determining that compromised customer data had been “published on the dark web.”
“Our internal teams are working with external cybersecurity experts to analyze the situation.” AT&T said. “To our knowledge, the data breach appears to date back to 2019 or earlier and does not contain personal financial information or call history.”
“The information varies by customer and account,” the company said, but may have included a person's full name, email address, mailing address, phone number, Social Security number, date of birth, AT&T account number and passcode.
In addition to these 7.6 million customers, 65.4 million previous account holders were also affected.
The company said it “will contact individuals with sensitive personal information at risk separately and provide free identity theft and credit monitoring services.”
AT&T said it has reset passcodes for those affected and directed customers to a site with details on how to reset them.
techcrunch, Which was first reported on Passcode ResetIt said it informed AT&T on Monday that “the leaked data contained encrypted passcodes that could be used to access AT&T customer accounts.”
TechCrunch said it delayed publishing its article so the company could “begin resetting customer account passcodes.”
“This is the first time AT&T has acknowledged that the leaked data belonged to its customers, nearly three years after a hacker claimed to have stolen 73 million AT&T customer records,” TechCrunch said in its report.
AT&T said it did not know whether the leaked data “sourced from AT&T or one of its suppliers” and that it had “no evidence of unauthorized access to its systems resulting in the theft of the data set.”
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