California Data Breaches — Page 23

The Washington Post experienced a regulator-confirmed data breach in 2025 involving unauthorized access to its Oracle E-Business Suite environment. State filings report 9,720 affected individuals, with potentially exposed information including Social Security numbers, financial account data, medical information, and health insurance information.

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US Tiger Securities Inc. (TradeUP Securities) experienced a data breach in 2025, confirmed by regulatory filings, affecting approximately 26,985 individuals.

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Outcomes One, Inc., a healthcare-focused vendor, experienced an email-phishing data breach on July 1, 2025. The incident potentially exposed the personal and health information of at least 149,904 individuals, though some reports indicate a higher number of 257,481 affected individuals. The breach was confirmed by regulatory filings and company statements.

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Monterey Mushrooms, LLC experienced a data breach in late 2025.

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Cardinal Services, Inc. experienced a data breach in 2025 where names, Social Security numbers, and other personal information of over 142,000 individuals were exposed.

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Louis Vuitton North America, Inc. experienced a data breach in 2025 that exposed sensitive client information.

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MemberSource Credit Union experienced a data breach in June 2025, which involved a ransomware attack.

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Farmers Insurance Exchange and Farmers Group, Inc. experienced a regulator-confirmed data breach in 2025, with the reported incident date listed as May 29, 2025. Available records identify driver's license numbers and dates of birth as exposed information, but do not state the affected-individual count.

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Farmers Insurance Exchange and Farmers Group, Inc. experienced a data breach in 2025 involving a third-party vendor, affecting over one million individuals.

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Columbia University experienced a data breach in 2025 that affected nearly 870,000 individuals, compromising Social Security numbers and health information.

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Ericsson Inc. experienced a data breach in 2025-2026 involving a third-party service provider, affecting employees and customers.

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Payactiv, Inc. experienced a data breach in 2025, confirmed by regulatory filings, that affected over 176,000 individuals nationwide.

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Northwest Medical Homes, operating as Springfield Family Physicians, experienced a data breach in 2025 where unauthorized network access compromised personal and health information.

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Berkeley Research Group, LLC experienced a data breach in early 2025 that affected over 110,000 individuals, including clients of multiple organizations.

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Clawson Honda of Fresno, a California-based car dealership, experienced a data breach discovered in February 2025, potentially exposing personal identifiable information.

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Apro, LLC, operating as United Pacific and Rocket Stores, experienced a data breach reported on December 29, 2025.

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Integrated Specialty Coverages, LLC (ISC) experienced a data breach in 2025, affecting approximately 90,000 individuals.

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Crossroads Trading Co., Inc. experienced a data security incident on February 15, 2025, which led to a class action settlement.

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DermCare Management experienced a data breach in 2025 where patient data was exposed, leading to notifications in 2026.

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