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Browse data breaches affecting California residents in 2026. Stay informed about security incidents and protect your personal information.
Showing 25 breaches affecting California
Discovered Sep 23, 2026
Ethan Conrad Properties, Inc. reported a 2026 data breach involving names and additional unspecified personal data elements. The incident was discovered on August 24, 2026, while the number of affected individuals and specific additional data elements remain unknown.
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Discovered Sep 23, 2026
The Friesen Group reported a 2025 data breach after an unauthorized user accessed its network. A California Attorney General notice dated September 21, 2026, states that names and other potentially sensitive information may have been involved, but no affected-person count has been disclosed.
Discovered Sep 22, 2026
Medimpact Healthcare Systems experienced a data breach in late 2025 where unauthorized activity was discovered in its systems, potentially affecting individuals whose personal information was exposed.
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Discovered Sep 22, 2026
Ridgeway Pharmacy Ltd experienced a third-party website security incident in 2026, which may have affected 15 million patients.
Discovered Sep 22, 2026
The Leggett & Platt, Incorporated Employee Benefits Plan experienced a data breach involving unauthorized activity identified by its pharmacy benefits manager, MedImpact Healthcare Systems Inc., on October 18, 2025. The breach was reported to the California Attorney General in 2026, but the number of affected individuals and the full data types have not been disclosed.
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Discovered Sep 22, 2026
United Underwriters experienced a data breach in 2026 where an unauthorized actor downloaded files containing personal information. The company notified the California Attorney General.
Discovered Sep 22, 2026
Seyfarth Shaw LLP experienced a data event in 2026 involving unauthorized acquisition of a limited number of documents, according to the California Attorney General.
Discovered Sep 21, 2026
Seyfarth Shaw LLP experienced a 2026 data breach involving names and Social Security numbers after documents were sent to an unauthorized email recipient. Reports identified more than 500 affected individuals in California, 142 in Massachusetts, and 305 in Texas, while the exact total remains undisclosed.
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Discovered Sep 19, 2026
Opportune LLP experienced a data breach in 2026, which was confirmed by a California Attorney General submission. The full scope of affected individuals and data types remains unclear.
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Discovered Sep 19, 2026
Partnership HealthPlan of California experienced a privacy incident in 2026, which involved a mailing error exposing member data for 1,526 individuals.
Discovered Sep 18, 2026
American Casting Company was listed in a reports-only September 2026 ransomware report as a data breach victim of the Storm group. The available report does not confirm the number of affected individuals or the types of data involved.
Discovered Sep 18, 2026
Tarter Krinsky & Drogin LLP had a data breach at an unknown date, as reported by the California Attorney General, though details remain unconfirmed from other sources.
Discovered Sep 18, 2026
Accela, Inc. was associated with a data breach reported in 2026 after a California Attorney General filing identified a December 2025 network incident. The affected population and specific exposure of Social Security numbers, medical information, and financial data have not been publicly confirmed.
You may be entitled to compensation
Discovered Sep 17, 2026
Beckman Coulter, Inc. appeared in a September 17, 2026 report concerning a possible data breach attributed to the Metaencryptor ransomware group. The reported Beckman Coulter data breach remains unconfirmed, and no affected count or data types have been disclosed.
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Discovered Sep 17, 2026
Vista Del Mar Child and Family Services reported a 2026 data breach after an unauthorized actor accessed systems containing files that may have included personal and protected health information. The number of affected individuals and specific data elements have not been disclosed.
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Discovered Sep 16, 2026
Lennar Mortgage, LLC experienced a data security incident in May-June 2026, leading to the exposure of personal and financial information for over 61,000 individuals, with public disclosure in August 2026.
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Discovered Sep 15, 2026
zHealth, Inc. experienced a data breach in 2026 involving unauthorized access to its network environment, impacting an unknown number of individuals.
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Discovered Sep 15, 2026
Cornerstone Staffing Solutions, Inc. experienced a ransomware/data breach in November 2025, which was disclosed in 2026. This incident reportedly affected job seekers and clients.
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Discovered Sep 11, 2026
Greenberg Traurig, LLP experienced a limited cyber incident in 2026 where an unauthorized actor accessed a small number of documents and posted them on the dark web. The firm stated its systems were not compromised.
Discovered Sep 10, 2026
Hibbett Retail, Inc. experienced a data breach between April 22 and April 25, 2026, which was disclosed in September 2026. The incident primarily affected employees and their affiliates, with approximately 109,732 individuals impacted.
You may be entitled to compensation
Discovered Sep 10, 2026
Hibbett Retail, Inc. reported a data breach in 2026 that may have affected at least 109,732 individuals, including residents of Texas, Washington, and Vermont. The incident involved employee records and exposed various types of personal information, including Social Security numbers and medical data.
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Discovered Sep 10, 2026
Lincoln National Life Insurance Company reported a data breach in 2026 involving Social Security numbers and medical records, affecting an unspecified number of individuals.
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Discovered Sep 10, 2026
Hibbett Retail, Inc. experienced a data breach disclosed in 2026 that affected approximately 109,732 individuals, involving employee-related data.
You may be entitled to compensation
Discovered Sep 10, 2026
California School Employees Association was listed in a 2026 data breach report by ransomware.live. The incident remains unconfirmed by the company or a government regulator, and the affected data and number of individuals are unknown.
Discovered Sep 9, 2026
Elixir Medical Corporation announced an investigation into a 2026 data breach where an unauthorized party accessed its network between July 20 and July 21, 2026. This investigation, disclosed via a law firm, determined that sensitive human resources information was impacted.
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