AT&T

4 breaches183M affected in allTechatt.com

Call and text records of nearly all AT&T wireless customers stolen via SnowflakeCredential stuffing exposed names, dates of birth, emails, government IDs, phone numbers, addresses and location data. Reported to the California AG.Credential stuffing110M affectedTelecomUSMar 19, 2024 Dark web data set covers 73 million current and former AT&T account holdersExposed names, emails, phone numbers, addresses, dates of birth, Social Security numbers and credentials and tokens. Reported to the Vermont AG.73M affectedTelecomUSJul 13, 2023 Breach, details not statedExposed names, Social Security numbers and phone numbers. Reported to the California AG.TechUSJun 11, 2014 AT&T website flaw leaks email addresses of 114,000 iPad 3G ownersHacking exposed emails and names.Hacking114K affectedTelecomUSUnverifiedJun 9, 2010

About

Every breach here links to its sources and official notices. Across Glyph: lawsuits, incidents and outages, the company profile.

notice_affected2026-09-25

AT&T, 2024-03-19or-doj: 51226382 (restored: the portal's own figure)

notice_affected2026-09-25

AT&T, 2024-03-19

disclosed2026-09-25

AT&T, 2014-06-112014-06-11

data_types2026-09-25

AT&T, 2014-06-11["names","ssn","phone"]

disclosed2026-09-25

AT&T, 2014-06-112015-04-20

occurred2026-09-25

AT&T, 2014-06-112014-06-11

source2026-09-25

AT&T, 2024-03-19https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/files/DB-Year-to-Date-Reportdec-2024.pdf

disclosed2026-09-25

AT&T, 2023-07-132023-07-13

source2026-09-25

AT&T, 2023-07-13https://ago.vermont.gov/document/2024-04-09-att-data-breach-notice-consumers

Added2026-09-25

AT&T, 2010-06-09

Added2026-09-25

AT&T, 2023-07-13

campaign2026-09-25

AT&T, 2024-03-19snowflake-2024

lawsuit2026-09-25

AT&T, 2024-03-19$177M class action settlement covering this and the March 2024 dataset incident (preliminary approval June 2025)

sector2026-09-25

AT&T, 2024-03-19telecom

attack2026-09-25

AT&T, 2024-03-19credential-stuffing

data_types2026-09-25

AT&T, 2024-03-19["names","dob","emails","government-id","phone","addresses","location","other"]

records2026-09-25

AT&T, 2024-03-19110000000

summary2026-09-25

AT&T, 2024-03-19AT&T disclosed that attackers accessed its workspace on a third-party cloud platform between April 14 and 25, 2024 and exfiltrated records of calls and texts from May to October 2022 and January 2, 2023 for nearly all of its wireless and MV

title2026-09-25

AT&T, 2024-03-19Call and text records of nearly all AT&T wireless customers stolen via Snowflake

hibp2026-09-25

AT&T, 2024-03-19AllegedATT

data_types2026-09-25

AT&T, 2024-03-19["names","dob","emails","government-id","phone","addresses"]

disclosed2026-09-25

AT&T, 2024-03-192024-03-19

summary2026-09-25

AT&T, 2024-03-19In March 2024, tens of millions of records allegedly breached from AT&T were posted to a popular hacking forum . Dating back to August 2021, the data was originally posted for sale before later being freely released. At the time, AT&T maint

title2026-09-25

AT&T, 2024-03-19Material cybersecurity incident reported to the SEC (8-K Item 1.05)

data_types2026-09-25

AT&T, 2024-03-19["names"]

records_basis2026-09-25

AT&T, 2024-03-19organization

records2026-09-25

AT&T, 2024-03-1951226382

attack2026-09-25

AT&T, 2024-03-19lost-device

discovered2026-09-25

AT&T, 2024-03-192024-03-26

occurred2026-09-25

AT&T, 2024-03-192024-03-26