Was I affected by a Keystone Alliance, Inc. data breach?

If you received healthcare services from Keystone Alliance, Inc., you may have been affected by one of their 2 reported breaches. Check your mail for breach notification letters, review your medical records for unauthorized changes, and use our breach checker tool to search for specific incidents.

Was my data affected by the Keystone Alliance, Inc. breach?

If you were a patient of Keystone Alliance, Inc. during the breach period, your data may have been compromised. Check your mail for breach notification letters. You can also contact Keystone Alliance, Inc. directly or file a records request to verify what data was accessed.

What data was exposed in the Keystone Alliance, Inc. breach?

Healthcare data breaches can expose names, dates of birth, Social Security numbers, medical records, insurance information, and financial data. The specific data types vary by incident. Review the breach notification from Keystone Alliance, Inc. for details on what was compromised.

Can I sue Keystone Alliance, Inc. for a data breach?

Whether you can bring or join a claim depends on the incident, governing law, documented harm, filing deadlines, and any court-approved settlement terms. Review current court materials and consult a licensed healthcare data breach attorney for advice about your circumstances.

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Keystone Alliance, Inc. Data Breach History

Keystone Alliance, Inc. has been involved in 2 reported healthcare data breaches affecting 2K patients.

How many data breaches has Keystone Alliance, Inc. had?

Keystone Alliance, Inc. has been involved in 2 reported healthcare data breaches affecting a total of 2K patients. The earliest breach was reported in 2024 and the most recent in 2025. Breach types include: Hacking/IT Incident. If you received care from Keystone Alliance, Inc., review the timeline below to check if your data may have been compromised.

IllinoisHacking/IT Incident

2

Total Breaches

2K

Patients Affected

2024

First Breach

2025

Most Recent

Breach Timeline

2025

Keystone Alliance, Inc.

2025-11-26 · Illinois

medium

1K affectedHacking/IT IncidentEmail

Protected health information (PHI) and personal data likely exposed through compromised email accounts may include: patient names, dates of birth, Social Security numbers, medical record numbers, insurance information, billing and payment details, clinical notes and treatment information, medication records, diagnoses and health conditions, appointment information, contact information (addresses, phone numbers, email addresses), financial account information, and any other sensitive personal data referenced in email communications. The specific types of information exposed depend on the content of emails within the compromised accounts and may vary by individual.

2024

Keystone Alliance Inc

2024-11-26 · Illinois

medium

1K affectedHacking/IT IncidentEmail

While the specific data elements compromised in this breach have not been publicly detailed, email-based breaches in healthcare settings typically expose a wide range of protected health information. Commonly compromised data types include: patient names, dates of birth, addresses, phone numbers, and email addresses; Social Security numbers (often included in insurance correspondence or billing communications); medical record numbers and patient account numbers; health insurance information including policy numbers, group numbers, and insurance company names; diagnosis and treatment information discussed in email communications between providers; medication lists and prescription information; laboratory and test results sent via email; billing and payment information including claims data; appointment scheduling information; and clinical notes or medical records sent as email attachments. The breadth of information potentially exposed depends on the specific email accounts that were compromised, how long the unauthorized access persisted, and what types of communications those accounts typically handled. Email systems used by healthcare organizations often contain years of accumulated correspondence, meaning that even a brief period of unauthorized access could expose substantial amounts of historical patient information.

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Check other providers in our database

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Verify accuracy after a breach

Data Source: All breach data is sourced from the U.S. Department of Health and Human Services (HHS) Office for Civil Rights (OCR) Breach Portal. Organization names are matched as reported; some entities may appear under different legal names.

Related resources

Keystone Alliance, Inc. Data Breach History

Keystone Alliance, Inc. has been involved in 2 reported healthcare data breaches affecting 2K patients.

How many data breaches has Keystone Alliance, Inc. had?

Keystone Alliance, Inc. has been involved in 2 reported healthcare data breaches affecting a total of 2K patients. The earliest breach was reported in 2024 and the most recent in 2025. Breach types include: Hacking/IT Incident. If you received care from Keystone Alliance, Inc., review the timeline below to check if your data may have been compromised.

IllinoisHacking/IT Incident

2

Total Breaches

2K

Patients Affected

2024

First Breach

2025

Most Recent

Breach Timeline

2025

Keystone Alliance, Inc.

2025-11-26 · Illinois

medium

1K affectedHacking/IT IncidentEmail

Protected health information (PHI) and personal data likely exposed through compromised email accounts may include: patient names, dates of birth, Social Security numbers, medical record numbers, insurance information, billing and payment details, clinical notes and treatment information, medication records, diagnoses and health conditions, appointment information, contact information (addresses, phone numbers, email addresses), financial account information, and any other sensitive personal data referenced in email communications. The specific types of information exposed depend on the content of emails within the compromised accounts and may vary by individual.

2024

Keystone Alliance Inc

2024-11-26 · Illinois

medium

1K affectedHacking/IT IncidentEmail

While the specific data elements compromised in this breach have not been publicly detailed, email-based breaches in healthcare settings typically expose a wide range of protected health information. Commonly compromised data types include: patient names, dates of birth, addresses, phone numbers, and email addresses; Social Security numbers (often included in insurance correspondence or billing communications); medical record numbers and patient account numbers; health insurance information including policy numbers, group numbers, and insurance company names; diagnosis and treatment information discussed in email communications between providers; medication lists and prescription information; laboratory and test results sent via email; billing and payment information including claims data; appointment scheduling information; and clinical notes or medical records sent as email attachments. The breadth of information potentially exposed depends on the specific email accounts that were compromised, how long the unauthorized access persisted, and what types of communications those accounts typically handled. Email systems used by healthcare organizations often contain years of accumulated correspondence, meaning that even a brief period of unauthorized access could expose substantial amounts of historical patient information.

Search All Breaches

Check other providers in our database

Request Your Medical Records

Verify accuracy after a breach

Data Source: All breach data is sourced from the U.S. Department of Health and Human Services (HHS) Office for Civil Rights (OCR) Breach Portal. Organization names are matched as reported; some entities may appear under different legal names.