This record tracks a ransomware attack claimed by the
N0n group against
Cogent Biosciences, Inc.. It collects the publicly disclosed attack details — sector, location and
timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAP
Window Zero is the time the breach stayed in the open before
anyone said so — the gap between when the attack was first discovered
on the operator's leak site (t1) and when it was publicly disclosed (t2).
The wider this window, the longer victims, staff and customers were exposed with no warning.
0days open
t1 · Published
t2 · Pending
Business Category
Healthcare / Pharma
Indexed by Breach House
November 06, 2026
Leak Status
pending
checked 2026-11-06
Disclosed / Notified
Not disclosed yet
Attack Summary
Cogent Biosciences, Inc. is a United States-based company operating within the healthcare and medicine sector, specializing in biotechnology research, molecular diagnostics, and therapeutic development services. The organization serves clients in clinical research and medical innovation, maintaining operations focused on scientific discovery and healthcare solutions. According to the threat-intelligence index catalog, Cogent Biosciences, Inc. is formally listed as a ransomware victim associated with threat actor N0n. This classification reflects the entity's documented involvement within the threat actor's activity profile. The listing type identifies the relationship without disclosing specific incident details, preserving factual neutrality regarding the nature or scope of the cyber event.
Leak Screenshots
1 CAPTURED
Captured directly from the operator's leak site by our collector, last checked 2026-11-06. Verdict evidence: [G4] Victim listed in the N0N Active section; publication not verified
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Dark Web Exposure
Cross-referenced against HaveIBeenRansom's dark-web index of ransomware leaks, breaches & infostealer logs.
0
found in Infostealer logs
0
found in Traditional breaches
0
found in Ransomware leaks
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Full exposure is locked
See every breached email, the internal-vs-external split and each leak source behind this victim.
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