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Att Data Breach 2024 What To Do. At&t confirmed that a data breach impacted 73 million current and former customers after its data were leaked on a cybercrime forum. At the time, at&t said it would notify around 110 million at&t customers of the breach, and that the records were stolen from its systems hosted on snowflake, a provider of cloud services for.

On friday, at&t said cybercriminals stole the phone records of “nearly all” of its customers, a data breach that will force the company to notify around 110 million people. The telecommunications giant said saturday that a dataset found on the “dark web” contains information such as social security numbers for about 7.6 million current at&t.