Cogent Biosciences, Inc. Data Breach: N0n Ransomware Claim (Nov 2026)
Summary
In the latest cybersecurity news, Cogent Biosciences, Inc. — an organization based in US — has fallen victim to a ransomware attack conducted by the group N0n. This data breach, discovered on 2026-11-06T10:53:40.759861+00:00, underscores the increasing need for proactive cybersecurity defenses as we continue through 2026.
Incident Report
| Attribute | Information |
|---|---|
| Target Organization | Cogent Biosciences, Inc. |
| Threat Group | N0n |
| Summary | clinical-stage biopharmaceutical (oncology) · United States | The open and closed claims analytics environment of a clinical-stage oncology company: millions of patient claim rows with patient, claim and provider identifiers and full diagnosis code detail, actively growing today | [NOT PAID — EXPOSED] |
| Date of Breach | 2026-11-06T10:53:24.917146+00:00 |
| Discovery Date | 2026-11-06T10:53:40.759861+00:00 |
| Region | US |
| Business Sector | Healthcare |
How to reduce your ransomware risk
Most ransomware intrusions start with a stolen password or a phishing email. A few proactive steps sharply cut your exposure:
- dark web monitoring — close the gap attackers exploit.
- data breach monitoring — close the gap attackers exploit.
Want to know if you’re already exposed? Run a free scan with the HookPhish data breach checker.
Disclaimer
HookPhish does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information. All breach data reported here is sourced from publicly available threat intelligence feeds for awareness purposes only.
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