atomsilo
First seen December 21, 2021Active5 claimed victims
The claims below are reproduced as posted by atomsilo on its own leak site. Such claims are frequently wrong or exaggerated, and are unverified. Organisations listed here have not been confirmed to have suffered a breach.
Listed organisation? Contact [email protected].
Profile
AtomSilo is a double-extortion ransomware group that emerged in September 2021, exploiting the Atlassian Confluence vulnerability (CVE-2021-26084) for initial access and demanding ransoms up to $1 million, attributed to the Chinese state-linked threat actor BRONZE STARLIGHT.
Description from ransomware.live.
Claimed victims (as posted by the group — unverified)
| Victim (as posted) | Claimed on | Source | Press coverage |
|---|---|---|---|
| A large bank in Asia | February 24, 2026 | ransomware_live | — |
| Cristália - Indústria Farmacêutica | December 21, 2021 | ransomware_live | — |
| LIGHT CONVERSION | December 21, 2021 | ransomware_live | — |
| Eisai Co., Ltd | December 21, 2021 | ransomware_live | — |
| Tegra Vendas | December 21, 2021 | ransomware_live | — |
Claim data from ransomware.live and RansomLook (CC BY 4.0).