Understanding your Chiesi USA Inc. data breach notification letter
If a Chiesi USA Inc. letter arrived in your mailbox, here is what it means, why you received it, and the free steps you can take right now.
Why you received this letter
Chiesi USA Inc. is a specialty pharmaceutical company focused on developing and commercializing therapies for rare diseases and respiratory conditions. As a healthcare-related entity, the company typically collects and maintains sensitive personal information, including patient health records, prescription details, and insurance coverage data necessary for patient support programs. This data breach was officially reported to the New Hampshire Attorney General in 2025, confirming that unauthorized access to protected information occurred. If you received a data breach notification letter from Chiesi USA Inc., it indicates that your personal or health-related information was likely included in the compromised files. We recommend reviewing the letter carefully to understand the specific scope of the exposure and the identity monitoring services being offered to you.
What to do after the letter
Confirm the notice is genuine
A legitimate Chiesi USA Inc. notice references the specific incident reported to the New Hampshire Attorney General and describes which categories of your information were involved. Compare the letter against the public filing before acting on any links or phone numbers it contains.
Keep the letter — it is your proof of connection
The notification letter is the document that ties your personal information to this incident. Keep the original and photograph it. If you later request a case review, this letter is the strongest evidence that you were among the affected individuals.
Protect your accounts and credit
Depending on what was exposed, consider a free credit freeze with all three bureaus, new passwords for reused credentials, and monitoring of financial statements. These steps are free and do not require you to wait for anyone's permission.
Find out whether you have a claim
Whether the Chiesi USA Inc. breach gives you a legal claim depends on the facts. A free, no-obligation case review will tell you where you stand — there is no cost and no commitment to find out.
This page summarizes a data breach reported to the New Hampshire Attorney General for informational purposes and is attorney advertising. It does not create an attorney-client relationship. DataBreachPayment.com does not provide legal advice through this page.