AT&T, Inc.

AT&T, Inc. notified Delaware DOJ of a data breach affecting 50,469 Delaware residents. Data exposed: Social Security number, Financial / bank account, Health insurance, Date of birth, Usernames / passwords, Email address, Phone number, Postal address, Name.

Organization: AT&T, Inc.
Source: Delaware DOJ · source record
Date reported: n/a
Date(s) of breach: Not Provided
Residents affected: 50,469 (Delaware residents)
Data exposed: Social Security number Financial / bank account Health insurance Date of birth Usernames / passwords Email address Phone number Postal address Name
Notice letter: Sample notice (PDF)
First seen by BreachTally: 2026-10-30 03:43 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

Other filings by AT&T, Inc.

Organization	Source	State	Reported	Residents affected	Data exposed
AT&T Inc.	California AG	CA	Apr 9, 2024	Not published	In the letter (PDF)
AT&T	Wisconsin DATCP	WI	Mar 30, 2024	7	Social Security numberFinancial / bank accountDate of birthEmail address+3
AT&T	California AG	CA	Apr 23, 2015	Not published	Social Security numberFinancial / bank accountHealth insuranceDate of birth+5

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.