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AT&T has acknowledged<\/a> that a data leak making the rounds online contains information from more than 7.6 million current customers and 65 million former customers. The company has reset the security passcodes of active customers affected, and says that leaked information “may have included full name, email address, mailing address, phone number, social security number, date of birth, AT&T account number and passcode.” <\/p>\n<\/div>\n AT&T is reaching out to affected customers via \u201cemail or letter\u201d to let them know what data was included and what it\u2019s doing for customers in response. <\/p>\n<\/div>\n The company’s acknowledgment that the leaked data is real \u2014 the first reports of the leak<\/a> emerged in 2021 \u2014 only came after TechCrunch<\/em> notified AT&T of the vulnerability of its encrypted passcodes on Monday. The passcodes are typically four-digit numerical PINs used for account security on phone calls with company support or in-store verification and a security researcher\u2019s analysis revealed that it was \u201ceasy to decipher\u201d the passcodes. <\/p>\n<\/div>\n