AT&T data breach affects millions, prompting security measures

AT&T announced a data breach affecting 7.6 million current and 65.4 million former customers, with compromised information including Social Security numbers and passcodes. The breach does not include financial data or call history. AT&T is notifying affected customers, resetting passcodes, and offering credit monitoring. Consumers should monitor accounts, change passwords, and consider credit freezes. AT&T has faced similar breaches in the past.