AT&T data breach: Millions of customers caught up in major dark web leak BBC.comAT&T says personal data from 73 million current and former account holders leaked onto dark web CNNAT&T security breach affects millions. Here’s what to know The Associated PressAT&T Resets Millions of Passcodes After Customer Records Are Leaked The New York TimesAT&T data breach exposes 73 million current, former accounts on dark web, company says Fox Business