C2N DIAGNOSTICS, LLC disclosed a data security incident to the Illinois Attorney General on March 6, 2026, triggering legally mandated notification letters. If you are one of the people who received C2N DIAGNOSTICS, LLC's letter, your data may have been exposed and you could be entitled to compensation.
The Illinois Attorney General filing confirms the breach notice — not a court case. Dollar amounts and deadlines are shown only when a verifiable court filing supports them — nothing on this page estimates or guarantees a result.
Records filed with the Illinois AG show that C2N DIAGNOSTICS, LLC confirmed exposure of the information below:
These categories are what make the exposure actionable. Sensitive data types carry greater legal weight.
C2N Diagnostics, LLC operates at the intersection of advanced biotechnology and specialized clinical healthcare, providing cutting-edge diagnostic services and laboratory testing—most notably blood-based biomarker tests designed to detect Alzheimer's disease and other neurodegenerative conditions. Because of the critical nature of its operations, C2N Diagnostics collects, analyzes, and retains vast quantities of highly sensitive personal and protected health information. This repository typically includes comprehensive patient demographic details, physician orders, intricate clinical test results, biological specimen data, and, in many instances, health insurance and billing records. The company holds this vast troves of data not only to facilitate direct patient care and clinical research but also to coordinate with healthcare providers and insurance payers, making its digital infrastructure a central hub for sensitive medical intelligence.
In 2026, C2N Diagnostics reported a significant data security incident to the Illinois Attorney General, raising serious concerns among patients, medical professionals, and legal advocates alike. While investigations into corporate healthcare data breaches frequently point toward unauthorized network intrusions, sophisticated malware attacks, or vulnerabilities within third-party vendor ecosystems, an incident of this magnitude suggests potential gaps in digital perimeter defenses. In the specialized biotech and diagnostic sector, cybercriminals are increasingly targeting central databases to extract high-value intellectual property alongside re-identifiable patient records, exploiting any systemic weaknesses in network segmentation, access controls, or endpoint monitoring.
The exposure of medical diagnostic data carries profound and long-lasting risks for affected individuals. Unlike easily replaceable credit card numbers, foundational health information and personal identifiers cannot be altered. When data types such as names, dates of birth, clinical biomarker results, and health insurance details are compromised, victims face an elevated risk of targeted medical identity theft. This can manifest as fraudulent insurance claims draining policy limits, unauthorized use of medical services, interference with legitimate medical record integrity, and malicious phishing schemes specifically tailored to exploit a victim's known neurological or health status for financial exploitation.
As a custodian of protected health information, C2N Diagnostics, LLC was bound by stringent legal and regulatory frameworks, chief among them the Health Insurance Portability and Accountability Act (HIPAA) and applicable state consumer protection laws. HIPAA mandates rigorous administrative, physical, and technical safeguards to ensure the confidentiality, integrity, and security of electronic protected health information (ePHI). Under these regulatory standards, entities must maintain continuous vulnerability management, encryption protocols, and strict access controls. The occurrence of a data breach of this scale strongly implies a failure to maintain these mandated security postures, potentially breaching the legal duty of care owed to patients.
Receiving a formal data notification letter from C2N Diagnostics, LLC serves as an official acknowledgment that your private medical and personal information was compromised due to corporate inadequate security measures. Legally, this notification establishes the standing required to participate in a class action lawsuit aimed at demanding accountability, securing compensation, and forcing systemic improvements in data protection practices. Class members are not required to demonstrate out-of-pocket financial loss to seek legal remedies, as the exposure of intimate health data alone constitutes a compensable privacy injury. Our firm evaluates these claims on a contingency fee basis, meaning affected individuals pay nothing out of pocket and our attorneys are only compensated if a successful recovery is secured on your behalf.
Many people wrongly assume a claim requires proven fraud. The law recognizes data exposure alone as harm. See which of these describes your situation:
You received a data breach notification letter from C2N DIAGNOSTICS, LLC
You were a customer, patient, employee, or client of C2N DIAGNOSTICS, LLC
Your personal information was stored in C2N DIAGNOSTICS, LLC's systems
Your Social Security number or driver's license number was exposed
Your medical records, diagnoses, or health insurance information was compromised
Your financial account, credit card, or banking information was disclosed
You reside in the United States (all 50 states eligible)
That letter is legally required and confirms your data was exposed. It also gives you standing to file a claim.
What your notification letter means & what to do next →Act quickly to protect your identity and preserve your claim. Four steps, in order:
Keep the C2N DIAGNOSTICS, LLC letter. It is the document that proves you were part of this breach; a claim without it is weaker. Store a scanned backup.
Look for the credit-monitoring offer section of your C2N DIAGNOSTICS, LLC letter and enroll. It is free, and it creates a paper trail of any resulting fraud.
Freeze your credit with Equifax, Experian and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted whenever you need to apply for credit.
Deadlines apply to breach claims. A free review of your C2N DIAGNOSTICS, LLC letter takes minutes, and we only get paid if you do.
Security Incident
Prior to AG notification
Someone gained unauthorized access to data held in C2N DIAGNOSTICS, LLC's systems.
Reported to Attorney General
March 6, 2026
The Illinois AG received C2N DIAGNOSTICS, LLC's formal data breach disclosure.
Consumer Notification Letters Sent
Within weeks of AG filing
Notification letters are sent by mail to all individuals whose data was involved.
Legal Window — Act Now
Statute of limitations applies
Legal deadlines limit how long you have to act on this breach.
Breach victims may recover several categories of loss. What applies in the C2N DIAGNOSTICS, LLC matter depends on your state, the data involved, and the company's conduct.
Statutory damages exist independent of out-of-pocket loss — California's $100–$750 range is the model other states have followed.
If the breach led to fraudulent charges or unauthorized transactions on your accounts, those losses are recoverable.
Time spent handling breach fallout — freezes, disputes, monitoring — is compensable.
Credit-monitoring subscriptions and protection plans you bought because of the breach are recoverable expenses.
SSN and driver's license exposure creates long-term identity theft risk. Courts recognize the ongoing value of this harm and may award damages accordingly.
The unauthorized exposure of health and medical information may trigger HIPAA-related claims and additional state health privacy protections.
Exposure of financial account or credit/debit card information entitles victims to recover for actual and potential fraud losses.
Illinois's Personal Information Protection Act (PIPA) and Biometric Information Privacy Act (BIPA) provide some of the strongest data protection rights in the country. BIPA allows statutory damages of $1,000–$5,000 per violation, and class actions have resulted in substantial settlements.
The companies below also filed breach notices with the Illinois Attorney General. Letter recipients for any of them can pursue a review.
Power Solutions International, Inc
Illinois · Jan 2025
Sunflower Medical Group
Illinois · Jan 2025
Orthominds, Llc (Supplemental)
Illinois · Jan 2025
Healthcare Service Corporation
Illinois · Jan 2025
The Pavilion At Healthpark Llc
Illinois · Jan 2025
Rosecrance Health Network
Illinois · Jan 2025
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(786) 306-7278Free Claim ReviewLaw Office of David S. Harris