AT&T
Disclosed Jul 13, 20233 years ago73,000,000 affectedConfirmed
Dark web data set covers 73 million current and former AT&T account holders
AT&T said a data set released on the dark web about two weeks earlier contained AT&T data fields from 2019 or earlier, affecting about 7.6 million current and 65.4 million former account holders, including Social Security numbers for some. AT&T reset passcodes for affected current customers; the original source of the data was not determined at disclosure.
What is known
| People affected | 73,000,000 (as reported by the organization) |
|---|---|
| Disclosed | Jul 13, 2023 |
| Discovered | Mar 2024 |
| Attack | Not stated |
| Data exposed | Names, Emails, Phone numbers, Addresses, Dates of birth, Social Security numbers, Credentials and tokens |
| Sector | Telecom · US |
| Status | Confirmed |
| Lawsuit or fine | $177M class action settlement covering this and the Snowflake incident (preliminary approval June 2025) |
Sources
| Source | |
|---|---|
| AT&T gets preliminary approval for $177 million data breach settlementdatabreaches.net · News | News |
| AT&T Addresses Recent Data Set Released on the Dark Webweb.archive.org · The organization | The organization |
| AT&T confirms data breach and resets millions of customer passcodestheverge.com · News | News |
| Vermont Attorney General: 2024-04-09 AT&T Data Breach Notice to Consumersago.vermont.gov · Official notice | Official notice |
| Vermont Attorney General: 2023-07-13 AT&T Data Breach Notice to Consumersago.vermont.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| Vermont AGresidents of VT | Jul 13, 2023 | |
| Researchtotal | Mar 30, 2024 | 73,000,000 |
| Vermont AGresidents of VT | Apr 9, 2024 |
Other breaches at AT&T
| Breach | Affected | ||||
|---|---|---|---|---|---|
| Call and text records of nearly all AT&T wireless customers stolen via SnowflakeMar 19, 20242 years agoCredential stuffing | Mar 19, 20242 years ago | Credential stuffing | Telecom | Confirmed | 110M |
| Disclosed Jun 11, 2014Jun 11, 201412 years ago | Jun 11, 201412 years ago | Not stated | Tech | Confirmed | Unknown |
| AT&T website flaw leaks email addresses of 114,000 iPad 3G ownersJun 9, 201016 years agoHackingUnverified | Jun 9, 201016 years ago | Hacking | Telecom | Unverified | 114K |
History of this record
- 2026-09-25 · disclosed: 2024-03-30 to 2023-07-13 · backfill source
- 2026-09-25 · source: empty to https://ago.vermont.gov/document/2024-04-09-att-data-breach-notice-consumers · backfill source
- 2026-09-25 · added · seed source
First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.