> Cause not stated in filing
Cooper Health System data breach investigation
- Filed
- May 23, 2025
- Regulator
- New Hampshire AG
- People affected
- Not stated
- File status
- Investigation Open
What the filing confirms
- Cooper Health System reported the incident to the New Hampshire Attorney General.
Still unknown
- Which categories of personal information were taken. The filing does not list them.
- How many people were affected. The filing does not give a number.
- What caused the incident beyond the description in the filing.
- How the attackers got in, and whether basic safeguards such as multi-factor sign-in were in place.
Investigation notes
Cooper Health System is a healthcare provider responsible for the delivery of medical services and the management of sensitive patient information. As a healthcare entity, the organization typically collects and stores highly sensitive personal data, including medical histories, insurance details, and government-issued identifiers necessary for patient care and billing. In 2025, Cooper Health System officially reported a data breach to the New Hampshire Attorney General, indicating that unauthorized access to their systems may have compromised patient information. If you have received a formal data breach notification letter from the organization, it serves as an official alert that your personal or protected health information was involved in this incident. We recommend reviewing the letter carefully to understand the specific scope of the exposure and the protective steps being offered.
What our attorneys examine
A cyberattack does not excuse a company from protecting the information it holds. We look at whether Cooper Health System used reasonable security, how long it kept the data, and how quickly it told the people affected. Those questions decide whether a class action or individual claim is possible. Read more on how ransomware lawsuits work, or browse other incident files in New Hampshire.
Cooper Health System data breach questions
- Is the Cooper Health System data breach letter legit or a scam?
- A notice from Cooper Health System in the mail matches the breach Cooper Health System reported to the New Hampshire Attorney General on May 23, 2025. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Cooper Health System through a phone number or website you find yourself.
- Did Cooper Health System offer free credit monitoring?
- Check your letter from Cooper Health System. If free credit or identity monitoring is offered, the enrollment code and deadline are printed in the notice itself. Enrolling does not give up your right to bring a claim.
- Is there a Cooper Health System data breach class action lawsuit?
- Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Cooper Health System. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
- What should I do after getting the Cooper Health System data breach notice?
- Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
- Do I need a Cooper Health System data breach lawyer or attorney?
- An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.
- Can I sue Cooper Health System over the data breach?
- It depends on what was exposed, the law in New Hampshire and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
- How much could a Cooper Health System data breach settlement or claim be worth?
- There is no set amount, and no Cooper Health System settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. Keep receipts and records; they're what damages claims are built on.
Other open files in New Hampshire
- Janome America, Inc.New Hampshire Attorney General · Filed July 31, 2026Count not stated
- Sullivan Environmental ServicesNew Hampshire Attorney General · Filed July 31, 2026Count not stated
- City of New Britain, Inc.New Hampshire Attorney General · Filed July 30, 2026Count not stated
- New Hampshire Housing Yardi’s RentCafeNew Hampshire Attorney General · Filed July 30, 2026Count not stated
- Pocket FMNew Hampshire Attorney General · Filed July 30, 2026Count not stated
- Werth Wealth Management, LLCNew Hampshire Attorney General · Filed July 29, 2026Count not stated
Attorney advertising. An incident file reflects a public regulator filing and our review of it; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.