Where does the Cytek Biosciences, Inc. case file come from?

Every entry is taken from the breach report Cytek Biosciences, Inc. lodged with the New Hampshire Attorney General. Nothing here is estimated.

Why do the incident date and the report date differ?

Companies usually investigate before they report. The gap between the two dates shows how long that took.

What does the records-affected figure count?

It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.

Does this case file change over time?

Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Case file

Case File: Cytek Biosciences, Inc. Data Breach

This file collects the dated facts on record for the Cytek Biosciences, Inc. incident. The state report is dated December 22, 2025.

Timeline

December 22, 2025Report filed in New HampshireDate the notice was lodged with the New Hampshire Attorney General.

Case facts

Filing state: New Hampshire
Date reported: December 22, 2025
Receiving office: New Hampshire Attorney General

Case notes

Cytek Biosciences, Inc. filed a data breach notification with the State of New Hampshire on December 22, 2025. This public filing confirms an incident involving personal information, though specific details remain under investigation.

The official record currently does not specify the precise nature of the breach event or the categories of personal information that may have been accessed or exposed. The company has stated that an investigation into the incident is ongoing to determine its full scope.

At present, the number of individuals potentially affected by this incident is not disclosed in the public filing. Similarly, the exact date or timeframe when the breach occurred has not been made public.

Individuals who receive direct notifications from Cytek Biosciences, Inc. about this incident should review them carefully for specific instructions. It is generally advisable to remain vigilant for any unusual activity in personal accounts or communications.

As a general precaution, consider reviewing statements from financial institutions and other service providers for any unauthorized transactions. Be cautious of unsolicited emails, texts, or calls requesting personal details, as these could be phishing attempts.

Questions about this case file

Where does the Cytek Biosciences, Inc. case file come from?: Every entry is taken from the breach report Cytek Biosciences, Inc. lodged with the New Hampshire Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?: Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?: It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?: Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

New Hampshire data breaches

Filing source: New Hampshire Attorney General

Named in the Cytek Biosciences, Inc. breach?

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Timeline

Case facts

Case notes

Questions about this case file

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