[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fmoo2fphbktly":3},{"success":4,"breach":5},true,{"_id":6,"name":7,"title":8,"slug":9,"domain":10,"breachDate":11,"addedDate":12,"publishedAt":13,"modifiedDate":14,"contentUpdatedAt":14,"source":15,"sourceUrl":16,"sourceUrls":17,"pwnCount":18,"affectedCount":18,"affectedCountStatus":19,"affectedCountLowerBound":13,"affectedCountUnit":20,"hasEnglishDescription":4,"contentLocale":21,"availableLocales":22,"translations":24,"severity":27,"dataClasses":28,"description":39,"seoTitle":40,"seoDescription":41,"logoUrl":42,"isVerified":4,"isSensitive":4,"isSpamList":43,"isMalware":43,"company":44},"6a4d70b64620890efdce5f47","Cornerstone Care Center 2026","Cornerstone Care Center 2026 Data Breach","cornerstone-care-center-2026","cornerstonecarecenter.com","2026-04-07T00:00:00.000Z","2026-07-07T21:33:42.987Z",null,"2026-07-29T11:15:11.097Z","Official breach notice and federal healthcare breach listing","https:\u002F\u002Fcornerstonecarecenter.com\u002Fwp-content\u002Fuploads\u002F2026\u002F05\u002FCornerstone_Website_Notice.pdf",[16],1510,"known","unknown","en",[21,23],"tr",{"en":25,"tr":26},{"slug":9},{"slug":9},"Low",[29,30,31,32,33,34,35,36,37,38],"Names","Dates of birth","Social security numbers","Last visit dates","Health insurance information","Medical records","Patient IDs","Personal health data","Prescription information","Provider information","\u003Cp>The Cornerstone Care Center data breach is a sensitive health information incident publicly reported when unauthorized activity was detected in a user account of a long-term care and skilled nursing facility operating in Sanger, California. In a notification issued by Sanger Skilled Care, LLC doing business as Cornerstone Care Center, it was stated that the organization became aware of unauthorized activity involving a user account around April 7, 2026, took steps to contain the incident, and initiated a review with external experts. A review completed on April 16, 2026, revealed that a limited amount of protected health information kept in normal operations may have been accessed by an unauthorized third party. The number of affected individuals was listed as 1,510 in the healthcare sector breach list.Although the incident appears to be limited to a single user account, it should be considered highly sensitive as it may include areas such as social security number, health insurance information, laboratory results, diagnosis, and treatment information.\u003C\u002Fp>\u003Ch2>Leaking Data Types and Risks\u003C\u002Fh2>\u003Cp>The types of data that may be involved in the Cornerstone Care Center breach could affect both a person's health care and identity information. The official notice listed, along with the first and last name, one or more of the following: date of birth, service date, health insurance information, laboratory results, medical diagnosis information, medical record number, patient identification number, prescription and treatment information, health care provider name, and social security number. This information is not the same in scope for every individual; some individuals may be affected in only one area, while others may be affected in multiple areas. The social security number increases the risk of identity theft and credit fraud, while health insurance information and patient identification can pose the risk of fraudulent health claims or unrecognized billing.Laboratory results, diagnosis, prescription, and treatment information are particularly sensitive in terms of personalized fraud and medical identity misuse because they contain details about private health history.\u003C\u002Fp>\u003Ch2>Verified Scope and Boundaries\u003C\u002Fh2>\u003Cp>The verified incident is that Cornerstone Care Center detected unauthorized activity on a user account around April 7, 2026, and as a result of a review on April 16, 2026, determined that a limited amount of protected health information may have been accessed. The number of affected individuals, 1,510, matches the row listed under Sanger Skilled Care, LLC dba Cornerstone Care Center in the health sector breach list. Although the official PDF does not detail the number of individuals, the date, account type, and data fields correspond to the same incident. This record does not include additional fields, such as financial account, payment card, email address, or phone number, which are not explicitly listed in the official notice.Service date, laboratory results, diagnosis, prescription, and treatment information have been considered within the scope of medical records and personal health data. In addition, the limitation in the official text stating 'information may vary by person' has been maintained, and it has not been assumed that all fields are present for every individual.\u003C\u002Fp>\u003Ch2>User Groups at Risk\u003C\u002Fh2>\u003Cp>The primary group at risk consists of current and former residents, patients, or health service records of those who have received services from Cornerstone Care Center and are involved in the facility's business processes. Since long-term care and skilled nursing services typically involve elderly individuals, patients in rehabilitation, and insurance processes connected to family members, the risk may not be limited to the individual alone. Individuals with a social security number are at a higher risk of identity theft. For individuals with health insurance information, medical record numbers, or patient identification, there is a risk of fraudulent healthcare claims, unrecognized disclosure forms, and incorrect patient records. The impact on privacy is more serious for individuals with laboratory results, diagnoses, prescriptions, or treatment information.This type of information can be used to scare, persuade, or make fake payment requests based on an individual's health history. Therefore, individuals receiving the notification should monitor both their credit and health records together.\u003C\u002Fp>\u003Ch2>Urgent Measures to Be Taken\u003C\u002Fh2>\u003Cp>Individuals who may have been affected by the Cornerstone Care Center breach should first keep the notification sent to them and determine which data fields apply to them. Individuals with a Social Security number should check their credit reports and set alerts for unknown account openings, credit applications, or unexpected inquiries. If necessary, a security freeze or fraud alert should be placed on credit files. Affected individuals should regularly review insurance statements, patient portal activities, and unknown service items for health insurance, patient ID, medical record numbers, prescription, or treatment information.When an unknown laboratory result, provider name, service date, or invoice is seen, the relevant healthcare institution and insurance company should be contacted quickly. Requests for identity, payment, or insurance updates received using the institution's name should not be responded to without verification through known communication channels.\u003C\u002Fp>\u003Ch2>Long-Term Security Strategies\u003C\u002Fh2>\u003Cp>The Cornerstone Care Center data breach shows that even a single user account in care facilities can pose a risk of access to sensitive health information. The long-term strategy on the user side is to monitor credit, insurance, and patient records together. Fields such as social security number, medical record number, and health insurance information are identifiers that can be used for a long time; therefore, the risk of misuse is not limited to the first few weeks. Health service explanations, prescription activities, diagnosis records, patient bills, and unrecognized provider names should be checked at regular intervals.On the institution side, basic precautions should include access limits to user accounts, abnormal session monitoring, segregation of duties on accounts containing patient data, rapid incident response, and regular review of file access logs. Even in account-based incidents, quickly performing data classification reduces notification time and uncertainty.\u003C\u002Fp>\u003Ch2>Record Control and User Action\u003C\u002Fh2>\u003Cp>The check conducted on LeakData for the Cornerstone Care Center breach helps the user to understand the risk information associated with this incident; however, the fields included in the individual's own notification letter should be given priority. This record is based on the user account incident identified around April 7, 2026, the review result of April 16, 2026, the data fields disclosed in the official notification, and the reported impact affecting 1,510 individuals. If the result is positive, the user should evaluate which protective steps are necessary regarding social security number, date of birth, health insurance information, medical record number, patient ID, laboratory result, diagnosis, prescription, or treatment information.Even if the result is negative, individuals who have received a notification from Cornerstone Care Center should consider their own documents and insurance activities. The purpose is to provide users with clear and actionable control steps for this health data incident originating from a single account, without reducing it but also without adding unverified data fields.\u003C\u002Fp>","Cornerstone Care Center 2026 Data Breach (1.5 Thousand Reported Records)","Cornerstone Care Center 2026 Data Breach. 1.5 Thousand reported records are reported. Reported data: Names, Dates of birth, Social security numbers. Review…","\u002Fuploads\u002Flogo\u002Fcornerstone-care-center-2026.png",false,{"name":45,"sector":46,"country":47,"website":10,"websiteArchiveUrl":47,"websiteStatus":47,"websiteCheckedAt":13},"Sanger Skilled Care, LLC dba Cornerstone Care Center","Healthcare",""]