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Cytek Biosciences: Unconfirmed Breach Claims & DoxxScan™ Rating

Cytek Biosciences appears in our tracker through 1 unconfirmed breach claim posted by ransomware or extortion groups. Cytek Biosciences has not publicly confirmed it. Here is the timeline, what the listings claim, and its DoxxScan™ Rating.

Cytek Biosciences appears in our tracker with one unconfirmed breach claim, attributed to November 2025. That entry is an extortion group’s own leak-site listing. Cytek Biosciences has not publicly confirmed it, and we have found no regulator, breach index or named news outlet corroborating it. The most serious is classified HIGH severity. Named threat groups tied to these claims: cmdorganization and rhysida. The DoxxScan™ Rating below is an automated estimate of how exposed Cytek Biosciences’s customers could be if the reported claims are accurate.

84/100

Low doxx risk

DoxxScan™ Rating — lower means a higher likelihood that personal data tied to this company is exposed and could be used to dox or target its customers.

UNCONFIRMED The only incident behind this rating is an extortion-group listing. Cytek Biosciences has not confirmed it, and no regulator, breach index or named news outlet has corroborated the claims. The rating is weighted down accordingly.

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November 1, 2025HIGH

Cytek Biosciences Listed by cmdorganization Ransomware Group

cmdorganizationrhysida Ransomware

Steps tailored to the data types reported exposed in the incidents above.

• Remove your personal information from data-broker sites so the leaked data can’t be combined against you — GalaxyWarden files those removals for you.

This profile is assembled automatically from Cytek Biosciences’s own tracked incident records — the incidents above, their classified severity, the data types reported exposed, and how recent each event is. Only incidents where information was reported lost count toward either rating; an outage or an advisory with no reported data loss is listed but not scored as exposure. The DoxxScan™ Rating estimates how exposed the company’s customers may be (a lower number means more exposure); the Safety Grade scores its publicly known record (higher = a cleaner known history). Neither is an audit of the company’s current security controls. See the full methodology →

The DoxxScan™ Rating is an automated, informational estimate of how exposed a company’s customers may be if the incidents on its public record are accurate, derived solely from that record — the number of incidents, how recent and severe they were, the sensitivity of the data involved, and who established the incident. Most incidents we track are unverified listings published by ransomware and extortion groups; those are accusations, not established facts, and they count for less. A lower rating indicates a higher likelihood that personal information tied to this company is circulating and could be used to dox or target individuals. It is not an audit, certification, or assessment of the company’s current security controls, and it does not represent present-day risk. It may rely on incomplete or unverified public reports and can change as new information emerges. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company named here. Provided for general awareness only — not legal, financial, or security advice. How the rating is calculated →