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Investigation OpenNH AG filing · December 22, 2025

Cytek Biosciences Reports Data Breach to New Hampshire Authorities

Cytek Biosciences, Inc. has filed notice with New Hampshire authorities regarding an unspecified data security incident. The filing indicates an ongoing investigation into a breach where personal information may have been compromised, though specific details are not yet publicly available.

State
NH
Reported
December 22, 2025

Cytek Biosciences, Inc. recently submitted a data breach notification to the State of New Hampshire on December 22, 2025. This filing advises state regulators of a security incident that potentially exposed sensitive data.

The nature of the breach, including the specific type of incident that occurred, has not been detailed in the public record. Similarly, the filing does not specify the categories of personal information that may have been involved in this event.

Because the exact types of data involved remain unspecified, individuals who receive a notification from Cytek Biosciences, Inc. should treat the situation with general caution. Reviewing any official correspondence for specific instructions is advisable, as the company is currently investigating the incident.

It is always prudent to monitor your financial statements and account activity for any unfamiliar transactions. Regularly checking your credit reports for new accounts or suspicious inquiries can also help detect potential misuse of your personal information. Free annual credit reports are available from the three major bureaus.

Consider enabling multi-factor authentication on all online accounts where it is offered. This adds an extra layer of security beyond just a password. Be wary of unsolicited emails or messages, especially those asking for personal details, as these could be phishing attempts related to the incident.

What to do if you were affected

These general steps can help limit the risk of identity theft and fraud after any data breach.

  • Stay alert to targeted scams

    Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.

  • Keep your notification letter

    Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

What to know about the Cytek Biosciences, Inc. data breach

Where can I see the official Cytek Biosciences, Inc. breach notice?
Cytek Biosciences, Inc.'s report is published by the NH Attorney General: https://mm.nh.gov/files/uploads/doj/remote-docs/cytek-biosciences-20251222.pdf Compare it with the letter you received to confirm the dates and details match.
What should I do after getting the Cytek Biosciences, Inc. 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.
Is the Cytek Biosciences, Inc. data breach letter legit or a scam?
A notice from Cytek Biosciences, Inc. in the mail matches the breach Cytek Biosciences, Inc. reported to the NH Attorney General on December 22, 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 Cytek Biosciences, Inc. through a phone number or website you find yourself.
Did Cytek Biosciences, Inc. offer free credit monitoring?
Check your letter from Cytek Biosciences, Inc.. If free credit or identity monitoring is offered, the enrollment code and deadline are printed in the notice itself. Signing up doesn't waive any legal rights you may have.
Can I sue Cytek Biosciences, Inc. over the data breach?
It depends on what was exposed, the law in NH 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.
Is there a Cytek Biosciences, Inc. 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 Cytek Biosciences, Inc.. 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.
How much could a Cytek Biosciences, Inc. data breach settlement or claim be worth?
There is no set amount, and no Cytek Biosciences, Inc. 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.
Do I need a Cytek Biosciences, Inc. 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.

Source: NH Attorney General filing

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