BreachCensus

Highmark Inc.

United States of America

Highmark Inc. is an organisation in United States of America. It appears on the California Attorney General breach-notification register with 3 confirmed incidents; the most recent notice was filed on February 15, 2023.

Data as of September 6, 2026.

Confirmed incident

US-DE

Occurred
December 13, 2022
Disclosed
February 15, 2023

Timeline

  1. February 15, 2023
    Reported to regulator Regulator

    DE AG breach notification: 559 Delaware residents affected

    source
Confirmed incident

US-DE

Occurred
April 27, 2022
Disclosed
July 27, 2022

Timeline

  1. July 27, 2022
    Reported to regulator Regulator

    DE AG breach notification: 486 Delaware residents affected

    source
Confirmed incident

US-CA

Occurred
December 23, 2020
Disclosed
June 24, 2021

Timeline

  1. June 24, 2021
    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 ↗