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    California Data Breaches

    Browse data breaches affecting California residents in 2026. Stay informed about security incidents and protect your personal information.

    Showing 25 breaches affecting California

    Investigation Open
    Healthcare
    Priority
    Medium

    SpineZone

    Discovered Aug 26, 2026

    SpineZone experienced a data breach in December 2025 due to a security incident at its third-party data vendor, Aesto, LLC, potentially exposing patient information. This incident was reported by Class Action U in August 2026.

    You may be entitled to compensation

    Healthcare
    Priority
    High

    Livara Health Medical Group

    Discovered Aug 26, 2026

    Livara Health Medical Group, also known as SpineZone, experienced a data breach. The specific date of the incident is currently unknown.

    Other
    High

    Museum Associates d/b/a Los Angeles Museum of Art (LACMA)

    Discovered Aug 25, 2026

    Museum Associates d/b/a Los Angeles Museum of Art (LACMA) experienced a data breach. The specific date of the incident is unknown.

    Investigation Open
    Healthcare
    Priority
    Medium

    Kern Behavioral Health and Recovery Services

    Discovered Aug 25, 2026

    Kern Behavioral Health and Recovery Services, also known as Kern Psychiatric Health and Wellness Center, experienced a data breach in 2026. This incident involved unauthorized access to patient data stored on its management company's network.

    You may be entitled to compensation

    Investigation Open
    Healthcare
    Priority
    Medium

    Genesis Healthcare

    Discovered Aug 25, 2026

    Genesis Healthcare Management experienced a data breach in June 2026, which exposed sensitive personal and medical information. A class action lawsuit investigation is underway.

    You may be entitled to compensation

    Healthcare
    Priority
    High

    The Health Trust

    Discovered Aug 24, 2026

    The Health Trust and its subsidiary, FASS, experienced a data breach. Details regarding the incident, including the affected data types and number of individuals, are currently unknown.

    Investigation Open
    Retail
    Priority
    High

    ASOS

    Discovered Aug 22, 2026

    ASOS US Sales LLC experienced a 2026 data breach affecting 9,496 individuals based on reports to the Texas and Vermont attorneys general. The exposed information reportedly included names, addresses, financial information, dates of birth, and other personal details.

    You may be entitled to compensation

    Healthcare
    Priority
    Medium

    Northern Inyo Hospital

    Discovered Aug 22, 2026

    Northern Inyo Hospital's patients may have been affected by a network security incident at vendor Aesto, LLC, in December 2025, potentially exposing protected health information.

    Healthcare
    Priority
    High

    Northern Inyo Healthcare District

    Discovered Aug 22, 2026

    The California Attorney General confirmed a data breach affecting Northern Inyo Healthcare District d/b/a Northern Inyo Hospital.

    Other
    Priority
    High

    Apollo Global Management, Inc.

    Discovered Aug 21, 2026

    Apollo Global Management, Inc. experienced a cybersecurity incident between July 6 and July 10, 2026, which may have exposed personal information including Social Security numbers. The incident was reported by a law firm, and a California AG listing indicates a data breach.

    Retail
    Priority
    Low

    JC Sales

    Discovered Aug 21, 2026

    JC Sales was listed in a reports-only 2026 data breach claim by the Akira ransomware group on August 21, 2026. The listing alleged that 206 GB of corporate data, including employee identity and contact information, was obtained, but no affected-individual count or official confirmation was available.

    Investigation Open
    Healthcare
    Priority
    High

    Nebraska Orthopaedic Center, P.C.

    Discovered Aug 21, 2026

    Nebraska Orthopaedic Center, P.C. experienced a data breach in 2026 via its vendor Aesto Health, exposing patient data including medical record numbers and Social Security numbers. The exact number of affected individuals is unknown.

    You may be entitled to compensation

    Other
    Low

    Aquasea

    Discovered Aug 21, 2026

    Aquasea Inc. was listed in a reports-only 2026 data breach entry by RansomLook on August 21, 2026. The listing does not confirm the affected count, exposed data types, or the incident through the company or a regulator.

    Investigation Open
    Other
    Priority
    High

    International Code Council

    Discovered Aug 21, 2026

    The International Code Council experienced a data security incident in 2016 involving payment card information, with a lawsuit filed in 2026 alleging breach of data security.

    You may be entitled to compensation

    Investigation Open
    Healthcare
    Priority
    High

    Silver Summit Medical Corporation

    Discovered Aug 20, 2026

    Silver Summit Medical Corporation reported a data breach in 2026 involving unauthorized access to personal and protected health information held by a third-party vendor. The breach occurred between November 27 and November 30, 2025, and the number of affected individuals has not been disclosed.

    You may be entitled to compensation

    Investigation Open
    Retail
    Priority
    High

    See's Candies

    Discovered Aug 20, 2026

    See's Candies experienced a data breach in April 2026, which was publicly disclosed in August 2026 after a ransomware attack by the Qilin group.

    You may be entitled to compensation

    Investigation Open
    Hospitality
    Priority
    High

    Apple American Group

    Discovered Aug 20, 2026

    Apple American Group, an Applebee's franchisee, experienced a data breach in April 2026, which was reported in August 2026. The incident potentially affected 2,992 Vermont residents.

    You may be entitled to compensation

    Technology
    Priority
    Low

    Kingston Technology

    Discovered Aug 20, 2026

    Kingston Technology was listed in a reports-only 2026 ransomware data breach report associated with the Everest ransomware group. The report does not disclose the affected count, data types, or official confirmation.

    Investigation Open
    Healthcare
    Priority
    Medium

    Heart Vascular & Leg Center

    Discovered Aug 20, 2026

    Heart Vascular & Leg Center experienced a data breach in 2026, which exposed sensitive patient information due to a third-party vendor incident.

    You may be entitled to compensation

    Hospitality
    Priority
    High

    Apple American Group LLC and Apple American Group II, LLC

    Discovered Aug 20, 2026

    Apple American Group LLC and Apple American Group II, LLC experienced a data breach in April 2026, reported to the California Attorney General, that exposed data of at least 2,992 individuals.

    Education
    High

    Merced Union High School District

    Discovered Aug 19, 2026

    Merced Union High School District reported a data breach to the California Attorney General in 2026 involving an incident dated August 11, 2025. The available regulator listing does not disclose the affected count or data types.

    Investigation Open
    Other
    Priority
    High

    Turner Construction Company

    Discovered Aug 19, 2026

    Turner Construction Company experienced a data breach in 2026, with July 2 listed as the breach date by the California Attorney General. Reports state that Social Security numbers may have been involved, but the number of affected individuals has not been disclosed.

    You may be entitled to compensation

    Investigation Open
    Other
    Priority
    High

    Langwasser & Company CPAs

    Discovered Aug 18, 2026

    Langwasser & Company CPAs experienced a reported data breach in 2026 involving a network security incident dated May 5, 2026. The affected population and data types have not been publicly disclosed.

    You may be entitled to compensation

    Investigation Open
    Other
    Priority
    High

    Corporation Service Company

    Discovered Aug 18, 2026

    Corporation Service Company (CSC) experienced a data breach in 2025, which it reported to regulators in August 2026. The incident may have exposed personal information of an unconfirmed number of individuals.

    You may be entitled to compensation

    Other
    Priority
    High

    Langwasser & Company CPAs

    Discovered Aug 18, 2026

    Langwasser & Company CPAs experienced a data breach in May 2026, which was confirmed by the California Attorney General.

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