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CYTEK BIOSCIENCES, INC.
bd_1553fa181e3ff4fd · schema v1 · pii pii-v1
Full breach record for CYTEK BIOSCIENCES, INC. →Cytek Biosciences Inc reported a data breach to the Indiana Attorney General. The breach occurred on 2025-11-01 and was reported on 2025-12-22. 2 Indiana residents were affected. 331 individuals affected in total.
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Leak gap clock⏱ Leak >30d
⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.
Incident timeline
Nov 1, 2025
Begins
Dec 22, 2025
Filed
This filing is one of 7 about the same incident.View merged incident
A leak claim by rhysida about this victim predates this filing by 51 days.View originating leak claim
Linked disclosures
Why this link?Ransomware claims (3)
- Leak Siterhysidabd_eb75b2e7b9fce6802026-01-25 · +35dVerified by operator
- Leak Sitecmdorganizationbd_c1046e1115ba4f232026-01-25 · +34dVerified by operator
- Leak Siterhysidabd_b141b6898f0871ed2025-11-01 · +51dVerified by operator
Regulatory filings (3) · sorted by filing gap
- Maine State AGbd_1ee03444beb455432025-12-22Verified by operator
- Massachusetts State AGbd_4edcb8da3a812e572025-12-22Verified by operator
- New Hampshire State AGbd_f10136bccf81d0972025-12-22Verified
Filing propagation · 4 filings · 4 states
View merged incident ↗Maine State AGDec 22 · first
Massachusetts State AGDec 22 · first
New Hampshire State AGDec 22 · first
Indiana State AGDec 22 · first · this page
Evidence ladder
Leak-site claim
Attacker assertion only. Establishes: claim date, group, alleged victim.
Press / market report
Unlocks: incident narrative, operational impact. Still no compliance clock.
State AG / regulator filingThis record
Unlocks: discovery date, data types, affected count, compliance clock.
SEC 8-K / victim statement
Unlocks: materiality, stated response, full audit trail. Ceiling removed.