BreachCensus

AT&T

United States of America

AT&T is an organisation in United States of America. It appears on the California Attorney General breach-notification register with 4 confirmed incidents; the most recent notice was filed on April 25, 2024.

Data as of September 6, 2026.

Sources

Confirmed incident

US-DE

Disclosed
April 25, 2024

Timeline

  1. April 25, 2024
    Reported to regulator Regulator

    DE AG breach notification: 50,469 Delaware residents affected

    source
Confirmed incident

US-WI

Disclosed
March 30, 2024

Timeline

  1. March 30, 2024
    Reported to regulator Regulator

    WI AG breach notification: an unknown number of Wisconsin residents affected

    source
Confirmed incident

US-CA

Disclosed
April 23, 2015

Timeline

  1. April 23, 2015
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
What a California notice means

Required under Cal. Civ. Code §1798.82. A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.

Note: no affected-count is published on this register.

California breach-notification register ↗

Confirmed incident

US-WI

Occurred
April 21, 2014
Disclosed
June 13, 2014

Timeline

  1. June 13, 2014
    Reported to regulator Regulator

    WI AG breach notification: an unknown number of Wisconsin residents affected

    source

Related

Disclosed around the same time