VULNpocalypse
LowBreach / campaignMonitoring

Cogent Biosciences listed by n0n ransomware group, RansomLook reports

RansomLook reports the n0n ransomware group listed Cogent Biosciences on its leak site, which is unconfirmed, so watch for an official notice from the

Published
Exploitation
No confirmation, only a leak-site listing tracked by RansomLook

What happened

According to the ransomware tracker RansomLook, the n0n ransomware group added “Cogent Biosciences, Inc.” to its leak site. The post is dated 2026-11-06. RansomLook shows the listing with the description “clinical-stage biopharmaceutical (oncology), United States”.

RansomLook also shows an earlier n0n post, “Company #125”, dated 2026-11-03. That post has the same sector and country description. The sources do not confirm whether that anonymised entry refers to the same company.

A listing on a leak site is a claim by the group. It is not proof of an attack. The following points are not confirmed:

  • Cogent Biosciences has not confirmed an incident in the sources provided.
  • No independent outlet has verified the claim.
  • The entry point is unknown.
  • Whether any data was taken, and what kind or how much, is unknown.
  • Whether any systems were encrypted is unknown.

Am I affected?

Not confirmed. The sources name no affected products, systems, customers or data categories. They also give no information on whether any third parties are involved.

What to do now

  1. Treat the listing as an unverified claim until Cogent Biosciences or an official body makes a statement.
  2. If you are a partner, supplier or study participant, watch for direct communication from the company. Be cautious with unsolicited messages that refer to this claim.
  3. Check back for updates. This advisory will be revised if a confirmed or independent source becomes available.

Sources