Data Breaches

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  1. AngMar Management Services

    TX, US · Business Associate · Hacking/IT Incident
    126.2Kpeople
    Disclosed
    HHS OCR breach portal Official register
    • Network Server

  3. Tarter Krinsky & Drogin LLP

    NY, US · Business Associate · Hacking/IT Incident
    196.6Kpeople
    Disclosed
    HHS OCR breach portal Official register
    • Network Server

  4. Bacon County Health Services, Inc.

    GA, US · Healthcare Provider · Hacking/IT Incident
    501people
    Disclosed
    HHS OCR breach portal Official register
    • Network Server

  5. Camden-on-Gauley Medical Center

    WV, US · Healthcare Provider · Hacking/IT Incident
    501people
    Disclosed
    HHS OCR breach portal Official register
    • Network Server

  10. Paradigm Healthcare Services

    CA, US · Business Associate · Hacking/IT Incident
    970.4Kpeople
    Disclosed
    HHS OCR breach portal Official register
    • Network Server

  12. Clover Health

    MN, US · Health Plan · Hacking/IT Incident
    138.7Kpeople
    Disclosed
    HHS OCR breach portal Official register
    • Network Server
    • Other

  13. Accela, Inc.

    CA, US
    —not stated
    Breached Disclosed
    California AG Official register

  16. Chess.com (2026)

    chess.com
    4.7Maccounts
    Breached Disclosed
    Have I Been Pwned Verified
    • Email addresses
    • Geographic locations
    • Names
    • Usernames
    In August 2026, millions of records allegedly sourced from Chess.com were posted online. The data contained 7.3M rows with 4.6M unique email addresses, along with usernames, names, countries and data relating to users' Chess.com accounts. Analysis of the data suggested it had been obtained by scraping. When loaded into HIBP, 99% of the email addresses had already appeared in previous data breaches, further supporting the scraping theory. Read more about scrapes and data breaches.

  17. Wichita Family Dental

    KS, US · Healthcare Provider · Hacking/IT Incident
    1.3Kpeople
    Disclosed
    HHS OCR breach portal Official register
    • Email

  18. zHealth, Inc.

    CA, US
    —not stated
    Breached Disclosed
    California AG Official register

  21. Catalyst Physician Group

    CA, US
    —not stated
    Breached Disclosed
    California AG Official register

  22. Cornerstone Staffing Solutions, Inc.

    WA, US
    681people
    Breached Disclosed
    Washington State AG Official register
    • Name
    • Social Security Number
    • Driver's License or Washington ID Card Number
    • Financial & Banking Information
    • Full Date of Birth
    • Military ID Number
    • Passport Number
    • +4 more

  23. zHealth, Inc.

    WA, US
    1.3Kpeople
    Breached Disclosed
    Washington State AG Official register
    • Name
    • Health Insurance Policy or ID Number
    • Medical Information

  24. Prescribe FIT, Inc.

    OH, US · Healthcare Provider · Hacking/IT Incident
    4.5Kpeople
    Disclosed
    HHS OCR breach portal Official register
    • Email

Breach records: Have I Been Pwned (CC BY 4.0), the HHS OCR breach portal, the Washington State Attorney General and the California Attorney General breach registers (public records). Last synced 19 hours ago.