Att Data Breach 2024 Letter. On its corporate website, at&t put the number at 73 million. At&t — the largest telco in the united states — said that the breached data included customers’ full name, email address, mailing address, date of birth, phone number and social security.
The data breach is the latest cyberattack at&t has experienced since a leak in january 2023, that affected nine million users. In either event, compromised data included one or more of the following:
